Form 10-Q - Quarterly report [Sections 13 or 15(d)]

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q


☒	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2023


☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______

Commission file number: 001-40284

SOLID POWER, INC.

(Exact name of registrant as specified in its charter)


Delaware		86-1888095
(State or other jurisdiction of		(I.R.S. Employer
incorporation or organization)		Identification No.)

486 S. Pierce Ave., Suite E
Louisville, Colorado		80027
(Address of principal executive offices)		(Zip Code)

(303) 219-0720

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common stock, par value $0.0001 per share	SLDP	The Nasdaq Stock Market LLC
Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50	SLDPW	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.


Large accelerated filer ☒	Accelerated filer ☐	Non-accelerated filer ☐	Smaller reporting company ☒
			Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

178,437,367 shares of common stock were issued and outstanding as of November 6, 2023.

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SOLID POWER, INC.

FORM 10-Q

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PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	21
Item 4.	Controls and Procedures	22

PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	22
Item 1A.	Risk Factors	22
Item 6.	Exhibits	23

Signatures		24

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GLOSSARY OF DEFINED TERMS



Term		Definition
Ah		Ampere hour
BMW		BMW of North America LLC
ESPP		Solid Power, Inc. 2021 Employee Stock Purchase Plan
EV		Battery electric vehicle
EV cells		Prototype cell formats between 60 and 100 Ah
Exchange Act		Securities Exchange Act of 1934, as amended
GAAP		Generally accepted accounting principles in the United States
JDA		Joint development agreement
OEM		Automotive original equipment manufacturers
Q1 Form 10-Q		Our Quarterly Report on Form 10-Q for the quarter ended March 31, 2023
Report		This Quarterly Report on Form 10-Q
SEC		Securities and Exchange Commission
Solid Power / the Company / we / us / our		Solid Power, Inc., a Delaware corporation (f/k/a Decarbonization Plus Acquisition Corporation III)
2022 Form 10-K		Our Annual Report on Form 10-K for the year ended December 31, 2022

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Cautionary Note Regarding Forward-Looking Statements

This Report contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995, that involve risks and uncertainties. We have based these forward-looking statements on our current expectations and projections about future events. All statements, other than statements of present or historical fact included in this Report, regarding our future financial performance and our strategy, expansion plans, market opportunity, future operations, future operating results, estimated revenues or losses, projected costs, prospects, plans, and objectives of management are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may,” “should,” “could,” “would,” “will,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “continue,” “project,” or the negative of such terms or other similar expressions. These forward-looking statements are subject to known and unknown risks, uncertainties, and assumptions about us that may cause our actual results, levels of activity, performance, or achievements to be materially different from any future results, levels of activity, performance, or achievements expressed or implied by such forward-looking statements. Except as otherwise required by applicable law, we disclaim any duty to update any forward-looking statements, all of which are expressly qualified by the statements in this section, to reflect events or circumstances after the date of this Report. We caution you that the forward-looking statements contained herein are subject to numerous risks and uncertainties, most of which are difficult to predict and many of which are beyond our control.

In addition, we caution you that the forward-looking statements regarding the Company contained in this Report are subject to the following factors:

●

risks relating to the uncertainty of the success of our research and development efforts, including our ability to achieve the technological objectives or results that our partners require, and to commercialize our technology in advance of competing technologies;

●

risks relating to the non-exclusive nature of our OEM and JDA relationships;

●

our ability to negotiate and execute supply agreements with our partners on commercially reasonable terms;

●

rollout of our business plan and the timing of expected business milestones;

●

delays in the construction and operation of production facilities;

●

our ability to protect our intellectual property, including in jurisdictions outside of the United States;

●

broad market adoption of EVs and other technologies where we are able to deploy our cell technology and electrolyte material, if developed successfully;

●

our success in retaining or recruiting, or changes required in, our officers, key employees, including technicians and engineers, or directors;

●

risks and potential disruptions related to management and board of directors transitions;

●

changes in applicable laws or regulations;

●

risks related to technology systems and security breaches;

●

the possibility that we may be adversely affected by other economic, business or competitive factors, including supply chain interruptions, and may not be able to manage other risks and uncertainties;

●

risks relating to our status as a research and development stage company with a history of financial losses, and an expectation to incur significant expenses and continuing losses for the foreseeable future;

●

the termination or reduction of government clean energy and electric vehicle incentives;

●

changes in domestic and foreign business, market, financial, political, and legal conditions; and

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●

those factors discussed in “Part I, Item 1A. Risk Factors” in our 2022 Form 10-K and in “Part II, Item 1A. Risk Factors” in our Q1 Form 10-Q, as such descriptions may be updated or amended in future filings we make with the SEC.

We caution you that the foregoing list does not contain all of the risks or uncertainties that could affect the Company.

You should not rely upon forward-looking statements as predictions of future events. We have based the forward-looking statements contained in this Report primarily on our current expectations and projections about future events and trends that we believe may affect our business, operating results, financial condition and prospects. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties and other factors, including those described in “Part I, Item 1A. Risk Factors” in our 2022 Form 10-K and “Part II, Item 1A. Risk Factors” in our Q1 Form 10-Q, as such descriptions may be updated or amended in future filings we make with the SEC. Moreover, we operate in a very competitive and rapidly changing environment. New risks and uncertainties emerge from time to time and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this Report. We cannot assure you that the results, events, and circumstances reflected in the forward-looking statements will be achieved or occur, and actual results, events, or circumstances could differ materially from those described in the forward-looking statements.

Neither we nor any other person assumes responsibility for the accuracy and completeness of any of these forward-looking statements. Moreover, the forward-looking statements made in this Report relate only to events as of the date on which the statements are made. We undertake no obligation to update any forward-looking statements made in this Report to reflect events or circumstances after the date of this Report or to reflect new information or the occurrence of unanticipated events, except as required by law. You should not place undue reliance on our forward-looking statements. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures, or investments we may make.

TRADEMARKS

Our logo and trademark appearing in this Report and the documents incorporated by reference herein are our property. This document and the documents incorporated by reference herein contains references to trademarks and service marks belonging to other entities. Solely for convenience, trademarks and trade names referred to in this Report may appear without the ® or TM symbols, but such references are not intended to indicate, in any way, that the applicable licensor will not assert, to the fullest extent under applicable law, its rights to these trademarks and trade names. We do not intend our use or display of other companies’ trade names, trademarks, or service marks to imply a relationship with, or endorsement or sponsorship of it by, any other companies.

MARKET AND INDUSTRY DATA

We obtained the industry and market data used throughout this Report or any documents incorporated herein by reference from our own internal estimates and research, as well as from independent market research, industry and general publications and surveys, governmental agencies, publicly available information, and research, surveys, and studies conducted by third parties. Internal estimates are derived from publicly available information released by industry analysts and third-party sources, our internal research, and our industry experience and are based on assumptions made by us based on such data and our knowledge of our industry and market, which we believe to be reasonable. In some cases, we do not expressly refer to the sources from which this data is derived. In addition, while we believe the industry and market data included in this Report or any documents incorporated herein by reference is reliable and based on reasonable assumptions, such data involve material risks and other uncertainties and is subject to change based on various factors, including those discussed in the section entitled “Risk Factors.” These and other factors could cause results to differ materially from those expressed in the estimates made by the independent parties or by us.

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INFORMATION ABOUT SOLID POWER

We use our website (www.solidpowerbattery.com) and various social media channels (e.g., Solid Power, Inc. on LinkedIn) as a means of disclosing information about Solid Power and our products to our customers, investors, and the public. The information posted on our website and social media channels is not incorporated by reference in this Report or in any other report or document we file with the SEC. Further, references to our website URLs are intended to be inactive textual references only. The information we post through these channels may be deemed material. Accordingly, investors should monitor these channels, in addition to following our press releases, SEC filings, and public conference calls and webcasts. In addition, you may automatically receive e-mail alerts and other information about Solid Power when you enroll your e-mail address by visiting the “Email Alerts” section of our website at https://ir.solidpowerbattery.com. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Exchange Act are filed with the SEC. These reports and other information we file with the SEC are available free of charge at https://ir.solidpowerbattery.com/financial-information/sec-filings when such reports are available on the SEC’s website.

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PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

Solid Power, Inc.

Condensed Consolidated Balance Sheets

(in thousands, except par value and number of shares)


	September 30, 2023
	(Unaudited)		December 31, 2022
Assets
Current Assets
Cash and cash equivalents	$	27,458	$	50,123
Marketable securities		166,030		272,957
Contract receivables		3,243		1,521
Contract receivables from related parties		5,048		319
Prepaid expenses and other current assets		3,207		2,888
Total current assets		204,986		327,808
Property, Plant and Equipment, net		99,241		82,761
Right-Of-Use Operating Lease Assets, net		7,300		7,725
Right-Of-Use Finance Lease Assets, net		1,011		922
Other Assets		1,057		1,148
Long-term Investments		228,806		172,974
Intangible Assets, net		1,525		1,108
Total assets	$	543,926	$	594,446
Liabilities and Stockholders’ Equity
Current Liabilities
Accounts payable and other accrued liabilities		6,280		11,326
Current portion of long-term debt		—		7
Deferred revenue		—		4,050
Accrued compensation		4,746		4,528
Operating lease liabilities, short-term		606		549
Finance lease liabilities, short-term		342		273
Total current liabilities		11,974		20,733
Warrant Liabilities		5,637		9,117
Operating Lease Liabilities, Long-Term		8,159		8,622
Finance Lease Liabilities, Long-Term		544		602
Total liabilities		26,314		39,074
Stockholders’ Equity
Common Stock, $0.0001 par value; 2,000,000,000 shares authorized; 178,417,397 and 176,007,184 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively		18		18
Additional paid-in capital		586,347		577,603
Accumulated deficit		(65,596)		(19,090)
Accumulated other comprehensive loss		(3,157)		(3,159)
Total stockholders’ equity		517,612		555,372
Total liabilities and stockholders’ equity	$	543,926	$	594,446

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

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Solid Power, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited)

(in thousands, except number of shares and per share amounts)


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Revenue	$	6,366	$	2,813	$	15,063	$	7,591
Operating Expenses
Direct costs		7,183		3,544		20,354		8,561
Research and development		14,236		9,710		40,391		24,811
Selling, general and administrative		6,444		5,158		19,307		15,827
Total operating expenses		27,863		18,412		80,052		49,199
Operating Loss		(21,497)		(15,599)		(64,989)		(41,608)
Nonoperating Income and Expense
Interest income		5,213		3,128		15,041		4,300
Change in fair value of warrant liabilities		1,155		-		3,480		28,183
Interest expense		(13)		(12)		(39)		(22)
Total nonoperating income and expense		6,355		3,116		18,482		32,461
Pretax Loss		(15,142)		(12,483)		(46,507)		(9,147)
Income tax benefit		—		(84)		—		(71)
Net Loss Attributable to Common Stockholders	$	(15,142)	$	(12,399)	$	(46,507)	$	(9,076)
Other Comprehensive Income (Loss)		(215)		(2,546)		2		(3,837)
Comprehensive Loss Attributable to Common Stockholders	$	(15,357)	$	(14,945)	$	(46,505)	$	(12,913)
Basic and diluted loss per share	$	(0.08)	$	(0.07)	$	(0.26)	$	(0.05)
Weighted average shares outstanding – basic and diluted		178,388,926		175,025,984		177,800,915		173,859,649

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

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Solid Power, Inc.

Condensed Consolidated Statement of Stockholders’ Equity (Unaudited)

(in thousands, except number of shares)


	Common Stock
					Additional		Accumulated		Accumulated Other		Total Stockholders’
	Shares		Amount		paid-in capital		deficit		Comprehensive Loss		Equity
Balance as of December 31, 2022		176,007,184	$	18	$	577,603	$	(19,090)	$	(3,159)	$	555,372
Net loss		—		—		—		(31,363)		—		(31,363)
Shares of common stock issued under ESPP		129,928		—		214		—		—		214
Withholding of employee taxes related to stock-based compensation		—		—		(111)		84		—		(27)
Shares of common stock issued for vested RSUs		163,148				—		—		—		—
Stock options exercised		2,026,630		—		183		—		—		183
Stock-based compensation expense		—		—		5,145		—		—		5,145
Unrealized loss on marketable securities		—		—		—		—		(213)		(213)
Balance as of June 30, 2023		178,326,890	$	18	$	583,034	$	(50,369)	$	(3,372)	$	529,311
Net loss		—		—		—		(15,142)		—		(15,142)
Withholding of employee taxes related to stock-based compensation		—		—		—		(85)		—		(85)
Shares of common stock issued for vested RSUs		32,442		—		—		—		—		—
Stock options exercised		58,065		—		11		—		—		11
Stock-based compensation expense		—		—		3,302		—		—		3,302
Unrealized gain on marketable securities		—		—		—		—		215		215
Balance as of September 30, 2023		178,417,397	$	18	$	586,347	$	(65,596)	$	(3,157)	$	517,612


	Common Stock
					Additional		Accumulated		Accumulated Other		Total Stockholders’
	Shares		Amount		paid-in capital		deficit		Comprehensive Loss		Equity
Balance as of December 31, 2021		167,557,988	$	17	$	568,183	$	(9,535)	$	—	$	558,665
Net income		—		—		—		3,323		—		3,323
Transaction fees		—		—		(12)		—		—		(12)
Stock options exercised		6,869,144		—		433		—		—		433
Stock-based compensation expense		—		—		3,910		—		—		3,910
Unrealized loss on marketable securities		—		—		—		—		(1,291)		(1,291)
Withholding of employee taxes related to stock-based compensation		—		—		(58)		—		—		(58)
Shares of common stock issued for vested RSUs		20,672		—		—		—		—		—
Balance as of June 30, 2022		174,447,804	$	17	$	572,456	$	(6,212)	$	(1,291)	$	564,970
Net loss		—		—		—		(12,399)		—		(12,399)
Stock options exercised		1,293,762		1		337		—		—		338
Stock-based compensation expense		—		—		2,588		—		—		2,588
Unrealized loss on marketable securities		—		—		—		—		(2,546)		(2,546)
Balance as of September 30, 2022		175,741,566	$	18	$	575,381	$	(18,611)	$	(3,837)	$	552,951

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

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Solid Power, Inc.

Condensed Consolidated Statements of Cash Flows (Unaudited)

(in thousands)


	Nine Months Ended September 30,
	2023		2022
Cash Flows from Operating Activities
Net loss	$	(46,507)	$	(9,076)
Adjustments to reconcile net loss to net cash and cash equivalents from operating activities:
Depreciation and amortization		7,805		3,437
Amortization of right-of-use assets		566		51
Loss on sale of property, plant and equipment		—		4
Stock-based compensation expense		8,447		6,498
Deferred taxes		—		(71)
Change in fair value of warrant liabilities		(3,480)		(28,183)
Amortization of premiums and accretion of discounts on marketable securities		(8,297)		(1,170)
Change in operating assets and liabilities that provided (used) cash and cash equivalents:
Contract receivables		(1,403)		(2,473)
Contract receivables from related parties		(5,048)		—
Prepaid expenses and other assets		297		2,101
Accounts payable and other accrued liabilities		207		(3,327)
Deferred revenue		(4,050)		(300)
Accrued compensation		218		1,831
Operating and Finance lease liabilities, short-term		(406)		192
Net cash and cash equivalents used in operating activities		(51,651)		(30,486)
Cash Flows from Investing Activities
Purchases of property, plant and equipment		(29,526)		(47,915)
Purchases of marketable securities and long-term investments		(256,584)		(448,757)
Proceeds from sales of marketable securities		315,493		111,198
Purchases of intangible assets		(428)		(308)
Net cash and cash equivalents provided by (used in) investing activities		28,955		(385,782)
Cash Flows from Financing Activities
Payments of debt		(7)		(104)
Proceeds from exercise of stock options		194		771
Proceeds from issuance of shares of common stock under ESPP		214		—
Cash paid for withholding of employee taxes related to stock-based compensation		(111)		(58)
Payments on finance lease liabilities		(259)		(76)
Transaction costs		—		(12)
Net cash and cash equivalents provided by financing activities		31		521

Net decrease in cash and cash equivalents		(22,665)		(415,747)
Cash and cash equivalents at beginning of period		50,123		513,447
Cash and cash equivalents at end of period		27,458		97,700

Cash paid for interest	$	39	$	5
Accrued capital expenditures	$	2,309	$	7,818

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

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Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 1 – Nature of Business

Solid Power, Inc. (the “Company”) is developing solid state battery technology to enable the next generation of batteries for the fast-growing EV and other markets. The Company’s planned business model is to sell its sulfide-based solid electrolyte and to license its solid-state cell designs and manufacturing process.

Note 2 – Significant Accounting Policies

The significant accounting policies followed by the Company are set forth in Note 2 – Significant Accounting Policies to the Company’s financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 (the “2022 Form 10-K”) and are supplemented by the Notes to the Condensed Consolidated Financial Statements (Unaudited) (the “Notes”) included in this Quarterly Report on Form 10-Q for the period ended September 30, 2023 (this “Report”). The financial statements included in this Report (including the Notes) should be read in conjunction with the 2022 Form 10-K.

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared on the basis of generally accepted accounting principles in the United States (“GAAP”). The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from those estimates. All dollar amounts presented herein are in U.S. dollars and are in thousands, except par value and share and per share amounts.

The accompanying unaudited condensed consolidated financial statements include accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Additionally, certain prior period amounts have been reclassified to conform to current period presentation in the accompanying unaudited condensed consolidated financial statements.

Recent Accounting Pronouncements

Leases

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), followed by other related ASUs that provided targeted improvements and additional practical expedient options. On January 1, 2022, the Company adopted the standards under Topic 842 using the modified retrospective method and elected a number of the practical expedients in its implementation. The key change that affected the Company relates to lessee accounting for operating leases that were historically off-balance sheet.

Financial Instruments

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance introduces a new model for recognizing credit losses on financial instruments based on estimates of expected losses. ASU 2016-13 also provides updated guidance regarding the impairment of available-for-sale debt securities and includes additional disclosure requirements. The Company adopted this guidance as of January 1, 2022.

The Company regularly reviews its available-for-sale marketable securities and evaluates the current expected credit losses by considering changes in credit ratings, historical experience, market data, issuer-specific factors, and current economic conditions. Based on this analysis, any allowance for credit losses is immaterial but would otherwise be recorded as a reduction to the carrying value of the asset.

The Company reviews its receivable aging on an individual customer level, considering collectability of cash flows based on the risk of past events, current conditions, and forward-looking information. The Company establishes allowances for bad debts equal to the estimable portions of accounts receivable it expects not to collect. Allowances for doubtful accounts are recorded as reductions to the carrying values of the related receivables. To date, the Company has not recorded an allowance for doubtful accounts.

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Note 3 – Property, Plant and Equipment

Property, plant and equipment are summarized as follows:


	September 30, 2023		December 31, 2022
Commercial production equipment	$	25,594	$	21,595
Laboratory equipment		8,307		3,278
Leasehold improvements		45,664		27,996
Furniture and computer equipment		1,635		1,482
Construction in progress		37,402		40,036
Total cost		118,602		94,387
Accumulated depreciation		(19,361)		(11,626)
Net property and equipment	$	99,241	$	82,761

Depreciation expenses for dedicated laboratory equipment and commercial production equipment are charged to research and development. The other depreciation expenses are included in the Company’s overhead and are allocated across Operating Expenses based on Company personnel costs incurred.

Depreciation expense related to property, plant and equipment are summarized as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Depreciation expense	$	2,896	$	1,653	$	7,794	$	3,430

The Company expanded its cell production capabilities through the construction of a second dry room and installation of an EV cell pilot line at its Louisville, Colorado facility, which is designed to produce larger format solid-state battery cells for the automotive qualification process.

The Company expanded its electrolyte production at its facility in Thornton, Colorado. Scaling this production will allow it to produce larger quantities of electrolyte material required to feed cell-production lines and continue research and development efforts. The Company began producing electrolyte at this facility in 2023 and has placed portions of the facility into service.


	September 30, 2023		December 31, 2022
Construction in progress
EV cell pilot line - Louisville, CO	$	1,095	$	2,010
Other cell and electrolyte development equipment - Louisville, CO		4,148		2,206
Electrolyte production and development equipment - Thornton, CO		32,159		35,820

Note 4 – Intangible Assets

Intangible assets of the Company are summarized as follows:


	September 30, 2023				December 31, 2022
	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Amount		Amortization		Amount		Amortization
Intangible assets:
Licenses	$	149	$	(58)	$	149	$	(51)
Patents		92		(4)		—		—
Patents pending		1,316		—		984		—
Trademarks		13		—		9		—
Trademarks pending		17		—		17		—
Total amortized intangible assets	$	1,587	$	(62)	$	1,159	$	(51)

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Amortization expense for intangible assets is summarized as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Amortization expense	$	3	$	2	$	11	$	7

Useful lives of intangible assets range from three to 20 years. Amortization expenses are allocated ratably across Operating Expenses based on Company personnel costs incurred.

Note 5 – Fair Value Measurements

The carrying amounts of certain financial instruments, such as cash equivalents, short-term investments, accounts receivable, accounts payable, and accrued liabilities, approximate fair value due to their relatively short maturities.

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis

As of September 30, 2023 and December 31, 2022, the Company’s financial assets and liabilities measured and recorded at fair value on a recurring basis were classified within the fair value hierarchy as follows:


	September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	125,985	$	—	$	—	$	125,985
Corporate Bonds	$	210,199	$	—	$	—	$	210,199
Government Bonds	$	58,652	$	—	$	—	$	58,652

Liabilities
Public Warrants	$	3,044	$	—	$	—	$	3,044
Private Placement Warrants	$	—	$	2,593	$	—	$	2,593


	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	165,179	$	—	$	—	$	165,179
Corporate Bonds	$	227,957	$	—	$	—	$	227,957
Government Bonds	$	42,865	$	—	$	—	$	42,865
U.S. Treasuries		9,930		—		—		9,930

Liabilities
Public Warrants	$	4,900	$	—	$	—	$	4,900
Private Placement Warrants	$	—	$	4,217	$	—	$	4,217

The change in fair value of the Company’s marketable securities and long-term investments are included in other comprehensive income (loss). There were no transfers in and out of Level 3 fair value hierarchy during the nine months ended September 30, 2023 or year ended December 31, 2022. During the nine months ended September 30, 2023 and 2022, the Company purchased $256,584 and $448,757 of marketable securities and long-term investments, respectively.

Fair Value of Warrants

The fair value of the Public Warrants (defined below) has been measured based on the quoted price of such warrants on the Nasdaq Stock Market, a Level 1 directly observable input. The fair value of the Private Placement Warrants (defined below) has been estimated using a Black-Scholes model as of September 30, 2023 and December 31, 2022 Consolidated Balance Sheet dates. The estimated fair value of the Private Placement Warrants is determined using Level 2 directly or indirectly observable inputs. Assumptions related to expected stock-price volatility, expected life, risk-free interest rate, and dividend yield are inherent in a Black-Scholes model. Material increases (or decreases) in any of those inputs may result in a significantly higher (or lower) fair value measurement. The Company estimates the volatility of its Private Placement Warrants based on implied volatility from the Company’s Public Warrants and from historical volatility of select peer companies’ common stock that matches the expected remaining life of the

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Warrants (defined below). The expected life of the Warrants is assumed to be equivalent to their remaining contractual term. The risk-free interest rate is based on the U.S. Treasury zero-coupon yield curve for a maturity similar to the expected remaining life of the Warrants. The dividend yield is based on the historical rate, which the Company anticipates remaining at zero. The following table provides quantitative information regarding Level 2 inputs used in the recurring valuation of the Private Placement Warrants as of their measurement dates:


	September 30, 2023			December 31, 2022
Exercise price	$	11.50		$	11.50
Stock price	$	2.02		$	2.54
Volatility		81.8	%		71.3	%
Term (years)		3.19			3.94
Risk-free rate		4.67	%		4.03	%

The following table provides a reconciliation of the Public Warrants measured at fair value using Level 1 inputs and Private Placement Warrants measured at fair value using Level 2 inputs:


	Public Warrants		Private Placement Warrants
	Level 1 Fair Value		Level 2 Fair Value
December 31, 2022	$	0.42	$	0.55
Change in fair value	$	0.04	$	0.31
March 31, 2023	$	0.46	$	0.86
Change in fair value	$	(0.15)	$	(0.43)
June 30, 2023	$	0.31	$	0.43
Change in fair value	$	(0.07)	$	(0.04)
September 30, 2023	$	0.24	$	0.39

The following tables provides a reconciliation of the September 30, 2023 three and nine months change in fair value for the Public Warrants and Private Placement Warrants:


					Three Months Change in
Warrant Class	Level	Warrants	June 30, 2023		Fair Value		September 30, 2023
Public Warrants	1	12,684,423	$	3,932	$	(888)	$	3,044
Private Placement Warrants	2	6,648,880	$	2,860	$	(267)	$	2,593
Total		19,333,303	$	6,792	$	(1,155)	$	5,637


					Nine Months Change in
Warrant Class	Level	Warrants	December 31, 2022		Fair Value		September 30, 2023
Public Warrants	1	12,684,423	$	4,900	$	(1,856)	$	3,044
Private Placement Warrants	2	6,648,880	$	4,217	$	(1,624)	$	2,593
Total		19,333,303	$	9,117	$	(3,480)	$	5,637

Note 6 – Warrant Liabilities

As of September 30, 2023 and December 31, 2022, there were 12,684,423 and 11,666,636 publicly traded warrants (“Public Warrants”) and 6,648,880 and 7,666,667 private placement warrants (“Private Placement Warrants,” and together with the Public Warrants, “Warrants”) outstanding, respectively. Each whole Warrant entitles the holder thereof to purchase one share of common stock at a price of $11.50 per share, subject to customary adjustments. Only whole Warrants are exercisable. The Warrants became exercisable on January 7, 2022 and will expire on December 8, 2026.

None of the Private Placement Warrants are redeemable by the Company so long as they are held by the initial purchasers of the Private Placement Warrants or their permitted transferees.

The Warrants were initially measured at fair value upon closing of the transactions contemplated by the Business Combination Agreement and Plan of Reorganization, dated June 15, 2021, by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc., as amended, for $101,253 and subsequently re-measured at each reporting period. The Public Warrants were allocated a portion of the proceeds from the issuance of the units of common stock and one-third warrants in the Company’s initial public offering equal to their fair value. The Company recognized a gain in connection with changes in the fair value of warrant

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liabilities of $1,155 and $3,480 for the three and nine months ended September 30, 2023 and $0 and $28,183 for the three and nine months ended September 30, 2022, respectively.

There have been no changes to our Public or Private Placement Warrants, including redemption terms disclosed in our 2022 Form 10-K.

Note 7 – Stockholders’ Equity

Common Stock

Stock options exercised for common stock, shares of common stock issued under the Solid Power, Inc. 2021 Employee Stock Purchase Plan (“ESPP”), and shares of common stock issued upon vesting of restricted stock units (“RSUs”) for the three and nine months ended September 30, 2023 and 2022 are summarized in the table below:


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Stock options exercised	58,065	1,293,762	2,084,695	8,162,906
Shares of common stock issued under ESPP	—	—	129,928	—
Shares of common stock issued for vested RSUs	32,442	—	195,590	20,672

Cash received from stock options exercised under the Solid Power, Inc. 2014 Equity Incentive Plan (the “2014 Plan”) for the three months ended September 30, 2023 and 2022 was $11 and $417, respectively. Cash received from stock options exercised under the 2014 Plan for the nine months ended September 30, 2023 and 2022 was $194 and $771, respectively.

Cash received from shares of common stock issued under the ESPP for the three months ended September 30, 2023 and 2022 was $0. Cash received from shares of common stock issued under the ESPP for the nine months ended September 30, 2023 and 2022 was $214 and $0, respectively.

Note 8 – Stock-Based Compensation

There have been no changes to our equity incentive plans, the ESPP, or our accounting methodology for stock-based compensation, as disclosed in our 2022 Form 10-K.

The fair value of stock options and RSUs issued to employees and directors is recognized as compensation expense over the period of service that generally coincides with the vesting period of the award. The Company allocated compensation ratably across Operating Expenses based on Company personnel costs incurred. When calculating the amount of annual compensation expense, the Company has elected not to estimate forfeitures and instead accounts for forfeitures as they occur.

For the three and nine months ended September 30, 2023, the Company recognized compensation costs totaling:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Equity-based compensation costs related to RSUs	$	1,248	$	618	$	2,839	$	1,133
Equity-based compensation costs related to stock options		2,012		1,970		5,486		5,365
Equity-based compensation costs related to ESPP		42		—		122		—
Total equity-based compensation costs	$	3,302	$	2,588	$	8,447	$	6,498
Unrecognized future compensation cost as of:						31,843		30,127

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The following table summarizes our award activity for RSUs and stock options for the three and nine months ended September 30, 2023:



	RSUs	Stock Options
Balance at December 31, 2022	1,057,980		25,998,172
Granted	1,797,034		3,272,873
Vested or Exercised	—		(1,679,954)
Forfeited	(88,441)		(1,494,020)
Balance at March 31, 2023	2,766,573		26,097,071
Granted	1,753,207		1,904,016
Vested or Exercised	(215,553)		(346,676)
Forfeited	(47,181)		(466,635)
Balance at June 30, 2023	4,257,046		27,187,776
Granted	506,604		—
Vested or Exercised	(32,442)		(58,065)
Forfeited	(53,129)		(138,747)
Balance at September 30, 2023	4,678,079		26,990,964

Stock Options

The fair value of each stock option grant during the nine months ended September 30, 2023 and 2022 was estimated on the grant date using the Black-Scholes option pricing model with the following weighted-average assumptions used:


	Nine Months Ended September 30,
	2023			2022
Approximate risk‑free rate		4.17	%		2.84	%
Volatility		46.91	%		44.69	%
Average expected life (years)		6 years			6 years
Dividend yield		—	%		—	%
Weighted‑average grant date fair value	$	2.80		$	7.26
Estimated fair value of total stock options granted	$	7,815		$	5,659

Note 9 – Basic and Diluted Loss Per Share

Basic loss per share represents net loss attributable to common stock divided by the basic weighted average number of common stock outstanding during the period.

Due to the net loss for the three and nine months ended September 30, 2023 and 2022, diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been anti-dilutive.

The table below sets forth the basic and diluted loss per share calculation for the three and nine months ended September 30, 2023 and 2022.


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Net loss attributable to common stockholders	$	(15,142)	$	(12,399)	$	(46,507)	$	(9,076)
Weighted average shares outstanding – basic and diluted		178,388,926		175,025,984		177,800,915		173,859,649
Basic and diluted loss per share	$	(0.08)	$	(0.07)	$	(0.26)	$	(0.05)

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The table below sets forth (in shares) potentially dilutive securities excluded from the diluted loss per share calculation for the nine months ended September 30, 2023 and 2022.


	Nine Months Ended September 30,
	2023	2022
Warrants	19,333,303	19,333,303
2014 Plan & Solid Power, Inc. 2021 Equity Incentive Plan - Stock Options	26,386,130	26,109,658
Solid Power, Inc. 2021 Equity Incentive Plan - RSUs	3,192,511	558,910
ESPP - Common Stock	120,339	—
Total potentially dilutive securities	49,032,283	46,001,871

Note 10 – Leases

The Company leases its facilities and certain equipment. Fixed rent escalates each year, and the Company is responsible for a portion of the landlords’ operating expenses such as property tax, insurance, and common area maintenance.

The Company’s facility in Louisville, Colorado, is under a noncancelable operating lease with a maturity date in September 2029. In 2022, the Company amended this operating lease to incorporate a prior subleased space into the base lease and extend the term of the lease. The Company has the right to renew this operating lease for an additional five-year period.

On September 1, 2021, the Company entered into an industrial operating lease agreement for its facility in Thornton, Colorado, with the initial term through March 31, 2029. Under this operating lease, the Company has one option to renew for five years, which has been included in the calculation of lease liabilities and right-of-use assets at the adoption date of the lease accounting standard on January 1, 2022, as the exercise of the option was reasonably certain. As the renewal rent has not been negotiated, the Company used an estimated rent rate which approximated the fair market rent at adoption of ASC 842 on January 1, 2022 for the extension period.

The Company has certain equipment leases classified as finance leases as of September 30, 2023, as presented on the Balance Sheet.

The Company’s leases do not have any contingent rent payments and do not contain residual value guarantees.

The components of lease expense are as follows:


	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
Finance lease costs:
Amortization of right-of-use assets	$	50	$	141
Interest on lease liabilities		13		38
Operating lease costs		290		870
Total lease expense	$	353	$	1,049

The components of cash flow information related to leases are as follows:


	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
Operating outgoing cash flows – finance leases	$	13	$	39
Financing outgoing cash flows – finance leases		79		220
Operating outgoing cash flows – operating leases		284		851
Right-of-use assets obtained in exchange for new finance lease liabilities:		124		213
Right-of-use assets obtained in exchange for new operating lease liabilities:		—		—

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	September 30, 2023
Finance lease
Weighted-average remaining lease term – finance leases (in years)	2.89
Weighted-average discount rate – finance leases	6.4	%
Operating lease
Weighted-average remaining lease term – operating leases (in years)	9.46
Weighted-average discount rate – operating leases	6.9	%

As of September 30, 2023, future minimum payments during the next five years and thereafter are as follows:


Fiscal year	Finance Lease		Operating Lease
2023 (remaining three months)	$	97	$	286
2024		386		1,173
2025		271		1,210
2026		141		1,248
2027		56		1,288
2028		16		1,329
Thereafter		-		5,242
Total		967		11,776
Less present value discount		81		3,011
Total lease liabilities	$	886	$	8,765

Note 11 – Related Party Transactions

During the three and nine months ended September 30, 2023, the Company recognized $3,657 and $10,128, respectively, of revenue related to the BMW joint development agreement. As of September 30, 2023, the Company recorded $5,048 of accounts receivable related to the BMW joint development agreement.

Note 12 – Income Taxes

The Company’s effective tax rate was 0.00% and 0.68% for the three months ended September 30, 2023 and 2022, respectively, and 0.00% and 0.78% for the nine months ended September 30, 2023 and 2022, respectively. The change in the effective tax rate between periods was due to the Company being in a full valuation allowance for the three and nine months ended September 30, 2023.

Note 13 – Contingencies

In the normal course of business, the Company may be party to litigation from time to time. The Company maintains insurance to cover certain actions and believes that resolution of such litigation will not have a material adverse effect on the Company.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the consolidated financial statements and related notes thereto included elsewhere in this Report. The following discussion contains forward-looking statements that reflect future plans, estimates, beliefs, and expected performance. For additional discussion, see “Cautionary Note Regarding Forward-Looking Statements” above. The forward-looking statements are dependent upon events, risks, and uncertainties that may be outside of our control. Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified below and those discussed elsewhere in this Report, under Part I, Item 1A. “Risk Factors” of our 2022 Form 10-K, and under “Part II, Item 1A. Risk Factors” in our Q1 Form 10-Q, as such descriptions may be updated or amended in future filings we make with the SEC. Unless indicated otherwise, the following discussion and analysis of results of operations and financial condition and liquidity relates to our current continuing operations and should be read in conjunction with the consolidated financial statements and notes thereto of this Report and our 2022 Form 10-K. We do not undertake, and expressly disclaim, any obligation to publicly update any forward-looking statements, whether as a result of new information, new developments, or otherwise, except to the extent that such disclosure is required by applicable law.

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Overview

We are developing solid state battery technologies to enable the next generation of rechargeable batteries for the fast-growing EV and other markets.

Our core technology is our proprietary sulfide-based solid electrolyte material, which replaces the liquid or gel electrolyte used in conventional lithium-ion batteries. We believe that our electrolyte material can enable extended driving range, longer battery life, improved safety, and lower costs compared to conventional lithium-ion.

We also are designing and developing solid state cells that utilize our electrolyte in the cathode, anode, and separator layers. We currently produce 0.2 Ah, 2 Ah, 20 Ah, and EV cells on two pilot lines using established manufacturing processes.

We have partnered with industry leaders, including Ford Motor Company, BMW, and SK On Co., Ltd. We are working closely with each of these partners to refine and validate our cell designs and electrolyte material with the ultimate goal to commercialize our technologies. Our business model – selling our electrolyte to cell manufacturers and licensing our cell designs and manufacturing processes – distinguishes us from many of our competitors who plan to be commercial battery manufacturers. Ultimately, we endeavor to be a leading producer and distributor of sulfide-based solid electrolyte material for powering both EVs and other applications. Since we do not intend to commercially produce battery cells, we expect to invest less than other development-stage battery companies that plan to commercially manufacture their own cell designs and construct battery production facilities.

The products we currently make are in the development stage and require continued development and validation before we can commercialize either our electrolyte or cell technology.

Recent Business Highlights

●

Made first A-1 EV cell deliveries to BMW in October to formally enter the automotive qualification process. These EV cell deliveries support BMW’s demo car program with additional deliveries projected over the coming months.

●

Increased SP2 electrolyte volume for EV cells and phased out production at our SP1 facility. This increase demonstrates the ability to manufacture at scale for potential partners.

Key Factors Affecting Operating Results

We are a research and development-stage company and have not generated significant revenue through the sale of our electrolyte or licensing of our cell designs. Our ability to commercialize our products depends on several factors that present significant opportunities for us but also pose material risks and challenges, including those discussed in the “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” sections of this Report, which are incorporated by reference.

Prior to reaching commercialization, we must test and validate our products to ensure they meet the performance and safety requirements of our customers. We also will have to negotiate licensing and supply contracts with our customers on terms and conditions that are mutually acceptable. We will need to scale production of our electrolyte material to satisfy anticipated demand. All of these factors will take time and affect our operating results. Since many factors are difficult to quantify, our actual operating results may be different than we currently anticipate.

Our revenue generated to date has primarily come from research and development performance on government contracts and research and development licensing activities. We have deployed and are deploying substantial capital to expand our production capabilities and engage in research and development programs. We also continue to incur significantly more administrative expenses as a publicly traded company.

In addition to meeting our development goals and reaching commercialization, future growth and demand for our products will be highly dependent upon market adoption of EVs. The market for new energy vehicles is still rapidly evolving due to emerging technologies, competitive pricing, government regulation and industry standards, and changing consumer demands and behaviors.

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Basis of Presentation

We currently conduct our business through one operating segment. As a research and development company with no commercial operations, our activities to date have been limited and were conducted primarily in the United States. Our historical results are reported under GAAP and in U.S. dollars.

Results of Operations

Comparison of the Three and Nine Months Ended September 30, 2023 to the Three and Nine Months Ended September 30, 2022

During the three and nine months ended September 30, 2023, we expanded and accelerated our development efforts through increased capital and operational investments. We continued to invest in talent while expanding our facilities, production equipment, and capabilities. We expect to continue to increase our spending in all operational areas through the remainder of 2023 in order to execute our development strategy.

The following table is a consolidated summary of our operating results for the periods indicated:


	Three Months Ended September 30,								Nine Months Ended September 30,
(in thousands)	2023		2022		Change		%		2023		2022		Change		%
Revenue	$	6,366	$	2,813	$	3,553	126	%	$	15,063	$	7,591	$	7,472	98	%
Operating Expenses
Direct costs		7,183		3,544		3,639	103	%		20,354		8,561		11,793	138	%
Research and development		14,236		9,710		4,526	47	%		40,391		24,811		15,580	63	%
Selling, general and administrative		6,444		5,158		1,286	25	%		19,307		15,827		3,480	22	%
Total operating expenses		27,863		18,412		9,451	51	%		80,052		49,199		30,853	63	%
Operating Loss		(21,497)		(15,599)		(5,898)	(38)	%		(64,989)		(41,608)		(23,381)	(56)	%
Nonoperating Income and Expense
Interest income		5,213		3,128		2,085	67	%		15,041		4,300		10,741	250	%
Change in fair value of warrant liabilities		1,155		—		1,155	NM	%		3,480		28,183		(24,703)	NM	%
Interest expense		(13)		(12)		(1)	8	%		(39)		(22)		(17)	77	%
Total nonoperating income and expense		6,355		3,116	$	3,239	104	%	$	18,482		32,461	$	(13,979)	(43)	%
Pretax Loss		(15,142)		(12,483)		(2,659)	NM			(46,507)		(9,147)		(37,360)	NM
Income tax benefit		—		(84)		84	NM			—		(71)		71	NM
Net Loss Attributable to Common Stockholders	$	(15,142)	$	(12,399)	$	(2,743)	NM		$	(46,507)	$	(9,076)	$	(37,431)	NM
Other Comprehensive Income (Loss)		(215)		(2,546)		2,331	NM			2		(3,837)		3,839	NM
Comprehensive Loss Attributable to Common Stockholders	$	(15,357)	$	(14,945)	$	(412)	NM		$	(46,505)	$	(12,913)	$	(33,592)	NM

NM = Not meaningful

The key factors driving our results of operations for the three and nine months ended September 30, 2023, including our increased operating loss as compared to the corresponding periods in 2022, were as follows:

●

Revenue and direct costs – revenue and related direct costs from the execution of our JDAs drove the overall increase for the periods, while revenue and direct costs from performance on government contracts decreased slightly. We expect revenue and related direct costs to continue to increase in the remainder of 2023 as we execute on JDA deliverables.

●

Research and development – our research and development costs increased for the periods primarily as a result of increased labor and material costs as we expanded the development efforts of our battery cells and electrolyte material. We expect our research and development costs to remain at increased levels as we continue the pace and scope of our development efforts.

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●

Selling, general and administrative – our selling, general and administrative expenses increased for the periods primarily due to additional use of outside professional services, additional planned hiring and workforce development associated with increasing our headcount to nearly 260 people, and enterprise resource planning system costs and implementation efforts.

●

Operating expenses – non-cash stock-based compensation costs increased for the periods across direct costs, research and development costs, and selling, general and administrative expenses related to our increased headcount.

●

Nonoperating income – our nonoperating income increased for the three-month periods primarily due to gain on fair value adjustment of warrant liabilities as well as yields on strategic cash investments in A-rated instruments, which increased our interest income. Our nonoperating income decreased for the nine-month periods primarily due to a lesser gain on fair value adjustment of warrant liabilities, partially offset by an increased gain in interest income related to strategic cash investment yields.

Liquidity and Capital Resources

Sources of Liquidity

Our primary sources of cash have historically been derived from the sale of equity, with a small portion coming from performance on government contracts and commercial revenues.

As of September 30, 2023 and December 31, 2022, we had total liquidity, as set forth below:


(in thousands)	September 30, 2023		December 31, 2022
Cash and cash equivalents	$	27,458	$	50,123
Marketable securities		166,030		272,957
Long-term investments		228,806		172,974
Total liquidity	$	422,294	$	496,054

Short-Term Liquidity Requirements

We anticipate that our most significant capital expenditures for the remainder of 2023 will relate to finishing construction of our electrolyte production and development facility. In addition, our short-term liquidity requirements include operating and capital expenses needed to further our technology development. We expect to fund our short-term liquidity requirements through our cash on hand and other liquid assets.

Long-Term Liquidity Requirements

We believe that our cash on hand is sufficient to meet our operating cash needs (including expenditures for the increased pace and scope of development as well as increased public company costs) and working capital and capital expenditure requirements for a period of at least the next 12 months and longer term until we generate adequate cash flows from licensing activities and/or electrolyte sales.

We may, however, need additional cash if there are material changes to our business conditions or other developments, including changes to our operating plan, development progress, delays in negotiations with OEMs, cell manufacturers, or other suppliers, market adoption of EVs, supply chain challenges, competitive pressures, inflation, and regulatory developments. To the extent that our resources are insufficient to satisfy our cash requirements, we may need to seek additional equity or debt financing. We also may opportunistically seek to enhance our liquidity through equity or debt financing, if such financing becomes available to us on terms that we consider favorable. If the financing is not available, or if the terms of financing are less desirable than we expect, we may be forced to take actions to reduce our capital or operating expenditures, which may adversely affect our development, business, operating results, financial condition, and prospects.

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Cash Flows

The following table summarizes our cash flows from operating, investing, and financing activities for the periods presented:


	Nine Months Ended September 30,
(in thousands)	2023		2022
Net cash and cash equivalents used in operating activities	$	(51,651)	$	(30,486)
Net cash and cash equivalents provided by (used in) investing activities	$	28,955	$	(385,782)
Net cash and cash equivalents provided by financing activities	$	31	$	521

Cash used in operating activities:

Cash used in operating activities increased from September 30, 2022 to 2023. The increase was primarily attributable to our operating loss, which was driven by continued increase in research and development costs and selling, general and administrative expenses. We expect cash used in operating activities to remain at these increased levels as we continue the pace and scope of our development efforts and work to achieve commercialization of our products.

Cash provided by (used in) investing activities:

Cash provided by investing activities increased from September 30, 2022 to 2023 primarily due to the net effect of increased purchase and sales of marketable securities, in addition to decreased capital expenditures for property, plant and equipment. Capital expenditures were primarily for custom manufacturing equipment in connection with our expansion of electrolyte production capabilities. We expect cash used in investing activities to increase as we finalize the build out of our electrolyte production facility and increase its production capabilities, and as we increase our electrolyte production scale. As our production processes are scaled in the future for commercialization, especially with respect to our electrolyte material, we expect capital expenditures to increase.

Cash provided by financing activities:

Cash provided by financing activities for the nine months ended September 30, 2023 and 2022 were primarily related to the cash exercise of stock options and proceeds from the sale of shares of common stock under the ESPP, partially offset by leased equipment payments.

Off-Balance Sheet Arrangements

We are not a party to any off-balance sheet arrangements, as defined under SEC rules.

Critical Accounting Estimates

There were no significant and material changes in our critical accounting policies and use of estimates during the three and nine months ended September 30, 2023 as compared to those disclosed in “Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates” in our 2022 Form 10-K.

Recent Accounting Pronouncements

See Note 2 of our unaudited financial statements included in this Report as well as Note 2 of our audited financial statements included in our 2022 Form 10-K for more information.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are a smaller reporting company as defined in Rule 12b-2 under the Exchange Act. As a result, pursuant to Item 305(e) of Regulation S-K, we are not required to provide the information required by this Item.

Table of Contents

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

In designing and evaluating our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired controls. As required by Rule 13a-15(b) under the Exchange Act, our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures as of September 30, 2023. Based upon that evaluation, our principal executive officer and principal financial officer concluded that, as of the end of the period covered by this Report, our disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting that occurred during the three months ended September 30, 2023 covered by this Report that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we may become involved in litigation or other legal proceedings. We are not currently a party to any litigation or legal proceedings that are likely to have a material adverse effect on our business. Regardless of outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources, and other factors.

Item 1A. Risk Factors

Our business, prospects, reputation, results of operations, and financial condition, as well as the price of our common stock and warrants, can be affected by a number of factors, whether currently known or unknown, including those described in “Part I, Item 1A. Risk Factors” of our 2022 Form 10-K and “Part II, Item 1A. Risk Factors” of our Q1 Form 10-Q, as such descriptions may be updated or amended in future filings we make with the SEC. When any one or more of these risks materialize from time to time, our business, reputation, results of operations, and financial condition, as well as the price of our common stock and warrants, can be materially and adversely affected. There have been no material changes to our risk factors since our Q1 Form 10-Q.

Table of Contents

Item 6. Exhibits


		Incorporated by Reference
Exhibit Number	Description	Schedule Form	File Number	Exhibit/Annex	Filing Date
2.1	Business Combination Agreement and Plan of Reorganization, dated as of June 15, 2021, by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc.	424B3	333-258681	Annex A	November 10, 2021
2.2	First Amendment to the Business Combination Agreement, dated October 12, 2021, by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc.	424B3	333-258681	Annex A-1	November 10, 2021
3.1	Second Amended and Restated Certificate of Incorporation	8-K	001-40284	3.1	December 13, 2021
3.2	Amended and Restated Bylaws	8-K	001-40284	3.1	November 21, 2022
10.1#	Solid Power, Inc. Outside Director Compensation Policy	8-K	001-40284	10.1	July 10, 2023
10.2#	Amendment to Interim CEO Agreement, dated August 7, 2023, between Solid Power, Inc. and David B. Jansen	8-K	001-40284	10.1	August 9, 2023
31.1*	Certification Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934
31.2*	Certification Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934
32.1**	Section 1350 Certification
32.2**	Section 1350 Certification
101.INS*	XBRL Instance Document – the instance document does not appear in the Interactive Data file because its Inline XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema Document
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	Inline XBRL Taxonomy Extension Definition Document
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase
104*	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

** Furnished herewith.

# Indicates a management or compensatory plan.

Table of Contents

SIGNATURE

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


Date: November 8, 2023	Solid Power, Inc.


	By:	/s/ John Van Scoter
	Name:	John Van Scoter
	Title:	President, Chief Executive Officer, and Director
	(Principal Executive Officer)


	By:	/s/ Kevin Paprzycki
	Name:	Kevin Paprzycki
	Title:	Chief Financial Officer and Treasurer
	(Principal Financial and Accounting Officer)

Exhibit 31.1

CERTIFICATION PURSUANT TO RULES 13a-14(a) AND 15d-14(a) UNDER THE

SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION

302 OF THE SARBANES-OXLEY ACT OF 2002

I, John Van Scoter, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Solid Power, Inc. for the quarterly period ended September 30, 2023;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: November 8, 2023

	By:	/s/ John Van Scoter
	John Van Scoter
	President and Chief Executive Officer
	(Principal Executive Officer)

Exhibit 31.2

CERTIFICATION PURSUANT TO RULES 13a-14(a) AND 15d-14(a) UNDER THE

SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION

302 OF THE SARBANES-OXLEY ACT OF 2002

I, Kevin Paprzycki, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Solid Power, Inc. for the quarterly period ended September 30, 2023;

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: November 8, 2023

	By:	/s/ Kevin Paprzycki
	Kevin Paprzycki
	Chief Financial Officer and Treasurer
	(Principal Financial and Accounting Officer)

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Solid Power, Inc. (the “Company”) on Form 10-Q for the period ended September 30, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, to the best of my knowledge, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.	The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


Date: November 8, 2023

	By:	/s/ John Van Scoter
	John Van Scoter
	President and Chief Executive Officer
	(Principal Executive Officer)

Exhibit 32.2

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

1.	The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.



Date: November 8, 2023

	By:	/s/ Kevin Paprzycki
	Kevin Paprzycki
	Chief Financial Officer and Treasurer
	(Principal Financial and Accounting Officer)

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2023	Nov. 06, 2023
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2023
Entity File Number	001-40284
Entity Registrant Name	SOLID POWER, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1888095
Entity Address, Address Line One	486 S. Pierce Ave., Suite E
Entity Address, City or Town	Louisville
Entity Address State Or Province	CO
Entity Address, Postal Zip Code	80027
City Area Code	303
Local Phone Number	219-0720
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		178,437,367
Entity Central Index Key	0001844862
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock [Member]
Title of 12(b) Security	Common stock, par value $0.0001 per share
Trading Symbol	SLDP
Security Exchange Name	NASDAQ
Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50
Trading Symbol	SLDPW
Security Exchange Name	NASDAQ

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets
Cash and cash equivalents	$ 27,458	$ 50,123
Marketable securities	166,030	272,957
Contract receivables	3,243	1,521
Contract receivables from related parties	5,048	319
Prepaid expenses and other current assets	3,207	2,888
Total current assets	204,986	327,808
Property, Plant and Equipment, net	99,241	82,761
Right-Of-Use Operating Lease Asset, net	7,300	7,725
Right-Of-Use Financing Lease Asset, net	1,011	922
Other Assets	1,057	1,148
Long-term Investments	228,806	172,974
Intangible Assets, net	1,525	1,108
Total assets	543,926	594,446
Current Liabilities
Accounts payable and other accrued liabilities	6,280	11,326
Current portion of long-term debt		7
Deferred revenue		4,050
Accrued compensation	4,746	4,528
Operating lease liabilities, short-term	606	549
Financing lease liability, short-term	342	273
Total current liabilities	11,974	20,733
Warrant Liabilities	5,637	9,117
Operating Lease Liabilities, Long-Term	8,159	8,622
Financing Lease Liabilities, Long-Term	544	602
Total liabilities	26,314	39,074
Stockholders' Equity
Common Stock, $0.0001 par value; 2,000,000,000 shares authorized; 178,326,890 and 176,007,184 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	18	18
Additional paid-in capital	586,347	577,603
Accumulated deficit	(65,596)	(19,090)
Accumulated other comprehensive loss	(3,157)	(3,159)
Total stockholders' equity	517,612	555,372
Total liabilities and stockholders' equity	$ 543,926	$ 594,446

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Condensed Consolidated Balance Sheets
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	178,417,397	176,007,184
Common stock, shares outstanding	178,326,890	176,007,184

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)
Revenue	$ 6,366	$ 2,813	$ 15,063	$ 7,591
Operating Expenses
Direct costs	7,183	3,544	20,354	8,561
Research and development	14,236	9,710	40,391	24,811
Selling, general and administrative	6,444	5,158	19,307	15,827
Total operating expenses	27,863	18,412	80,052	49,199
Operating Loss	(21,497)	(15,599)	(64,989)	(41,608)
Nonoperating Income and Expense
Interest income	5,213	3,128	15,041	4,300
Change in fair value of warrant liabilities	1,155	0	3,480	28,183
Interest expense	(13)	(12)	(39)	(22)
Total nonoperating income and expense	6,355	3,116	18,482	32,461
Pretax Income (Loss)	(15,142)	(12,483)	(46,507)	(9,147)
Income tax benefit		(84)		(71)
Net Income (Loss) Attributable to Common Stockholders	(15,142)	(12,399)	(46,507)	(9,076)
Other Comprehensive Income (Loss)	(215)	(2,546)	2	(3,837)
Comprehensive Income (Loss) Attributable to Common Stockholders	$ (15,357)	$ (14,945)	$ (46,505)	$ (12,913)
Earnings (loss) per share - Basic	$ (0.08)	$ (0.07)	$ (0.26)	$ (0.05)
Earnings (loss) per share - Diluted	$ (0.08)	$ (0.07)	$ (0.26)	$ (0.05)
Weighted average shares outstanding - Basic	178,388,926	175,025,984	177,800,915	173,859,649
Weighted average shares outstanding - Diluted	178,388,926	175,025,984	177,800,915	173,859,649

Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Common stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated OCI	Total
Balance at the beginning at Dec. 31, 2021	$ 17	$ 568,183	$ (9,535)		$ 558,665
Balance at the beginning (in shares) at Dec. 31, 2021	167,557,988
Changes in stockholder's equity
Net loss			3,323		3,323
Transaction fees		(12)			(12)
Withholding of employee taxes related to stock-based compensation		(58)			(58)
Shares issued for the vesting of RSUs (in shares)	20,672
Stock options exercised		433			433
Stock options exercised (in shares)	6,869,144
Stock-based compensation expense		3,910			3,910
Unrealized loss on marketable securities				$ (1,291)	(1,291)
Balance at the end at Jun. 30, 2022	$ 17	572,456	(6,212)	(1,291)	564,970
Balance at the end (in shares) at Jun. 30, 2022	174,447,804
Balance at the beginning at Dec. 31, 2021	$ 17	568,183	(9,535)		558,665
Balance at the beginning (in shares) at Dec. 31, 2021	167,557,988
Changes in stockholder's equity
Net loss					(9,076)
Shares issued for the vesting of RSUs (in shares)	20,672
Stock options exercised (in shares)	8,162,906
Balance at the end at Sep. 30, 2022	$ 18	575,381	(18,611)	(3,837)	552,951
Balance at the end (in shares) at Sep. 30, 2022	175,741,566
Balance at the beginning at Jun. 30, 2022	$ 17	572,456	(6,212)	(1,291)	564,970
Balance at the beginning (in shares) at Jun. 30, 2022	174,447,804
Changes in stockholder's equity
Net loss			(12,399)		(12,399)
Stock options exercised	$ 1	337			338
Stock options exercised (in shares)	1,293,762
Stock-based compensation expense		2,588			2,588
Unrealized loss on marketable securities				(2,546)	(2,546)
Balance at the end at Sep. 30, 2022	$ 18	575,381	(18,611)	(3,837)	552,951
Balance at the end (in shares) at Sep. 30, 2022	175,741,566
Balance at the beginning at Dec. 31, 2022	$ 18	577,603	(19,090)	(3,159)	555,372
Balance at the beginning (in shares) at Dec. 31, 2022	176,007,184
Changes in stockholder's equity
Net loss			(31,363)		(31,363)
Shares issued under ESPP		214			214
Shares issued under ESPP (in shares)	129,928
Withholding of employee taxes related to stock-based compensation		(111)	84		(27)
Shares issued for the vesting of RSUs (in shares)	163,148
Stock options exercised		183			183
Stock options exercised (in shares)	2,026,630
Stock-based compensation expense		5,145			5,145
Unrealized loss on marketable securities				(213)	(213)
Balance at the end at Jun. 30, 2023	$ 18	583,034	(50,369)	(3,372)	529,311
Balance at the end (in shares) at Jun. 30, 2023	178,326,890
Balance at the beginning at Dec. 31, 2022	$ 18	577,603	(19,090)	(3,159)	555,372
Balance at the beginning (in shares) at Dec. 31, 2022	176,007,184
Changes in stockholder's equity
Net loss					(46,507)
Shares issued under ESPP (in shares)	129,928
Shares issued for the vesting of RSUs (in shares)	195,590
Stock options exercised (in shares)	2,084,695
Balance at the end at Sep. 30, 2023	$ 18	586,347	(65,596)	(3,157)	517,612
Balance at the end (in shares) at Sep. 30, 2023	178,417,397
Balance at the beginning at Jun. 30, 2023	$ 18	583,034	(50,369)	(3,372)	529,311
Balance at the beginning (in shares) at Jun. 30, 2023	178,326,890
Changes in stockholder's equity
Net loss			(15,142)		(15,142)
Withholding of employee taxes related to stock-based compensation			(85)		(85)
Shares issued for the vesting of RSUs (in shares)	32,442
Stock options exercised		11			11
Stock options exercised (in shares)	58,065
Stock-based compensation expense		3,302			3,302
Unrealized loss on marketable securities				215	215
Balance at the end at Sep. 30, 2023	$ 18	$ 586,347	$ (65,596)	$ (3,157)	$ 517,612
Balance at the end (in shares) at Sep. 30, 2023	178,417,397

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended		15 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Cash Flows from Operating Activities
Net income (loss)	$ (15,142)	$ (12,399)	$ (31,363)	$ 3,323	$ (46,507)	$ (9,076)
Adjustments to reconcile net income (loss) to net cash and cash equivalents from operating activities:
Depreciation and amortization					7,805	3,437
Amortization of right-of-use assets					566	51
Loss on sale of property, plant and equipment						4
Stock compensation expense					8,447	6,498
Deferred taxes						(71)
Change in fair value of warrant liabilities	(1,155)	0			(3,480)	(28,183)
Amortization of premiums and accretion of discounts on marketable securities					(8,297)	(1,170)
Change in operating assets and liabilities that provided (used) cash and cash equivalents:
Contract receivable					(1,403)	(2,473)
Prepaid expenses and other assets					297	2,101
Accounts payable and other accrued liabilities					207	(3,327)
Deferred revenue					(4,050)	(300)
Accrued expenses					218	1,831
Lease liabilities					(406)	192
Due from related party					(5,048)
Net cash and cash equivalents used in operating activities					(51,651)	(30,486)
Cash Flows from Investing Activities
Purchases of property, plant and equipment					(29,526)	(47,915)
Purchases of marketable securities and long-term investments					(256,584)	(448,757)
Proceeds from sales of marketable securities					315,493	111,198
Purchases of intangible assets					(428)	(308)
Net cash and cash equivalents provided by (used in) investing activities					28,955	(385,782)
Cash Flows from Financing Activities
Payments of debt					(7)	(104)
Proceeds from exercise of stock options					194	771
Proceeds from issuance of common stock under ESPP					214	0	$ 0
Cash paid for withholding of employee taxes related to stock-based compensation					(111)	(58)
Payments on finance lease liability					(259)	(76)
Transaction costs						(12)
Net cash and cash equivalents provided by financing activities					31	521
Net (decrease) in cash and cash equivalents					(22,665)	(415,747)
Cash and cash equivalents at beginning of period			$ 50,123	$ 513,447	50,123	513,447	$ 513,447
Cash and cash equivalents at end of period	$ 27,458	$ 97,700			27,458	97,700
Supplemental information
Cash paid for interest					39	5
Accrued capital expenditures					$ 2,309	$ 7,818

Nature of Business

9 Months Ended

Sep. 30, 2023

Nature of Business

Nature of Business

Note 1 – Nature of Business

Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Significant Accounting Policies

Significant Accounting Policies

Note 2 – Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

Recent Accounting Pronouncements

Leases

Financial Instruments

Property, Plant and Equipment

9 Months Ended

Sep. 30, 2023

Property, Plant and Equipment

Property, Plant and Equipment

Note 3 – Property, Plant and Equipment

Property, plant and equipment are summarized as follows:


	September 30, 2023		December 31, 2022
Commercial production equipment	$	25,594	$	21,595
Laboratory equipment		8,307		3,278
Leasehold improvements		45,664		27,996
Furniture and computer equipment		1,635		1,482
Construction in progress		37,402		40,036
Total cost		118,602		94,387
Accumulated depreciation		(19,361)		(11,626)
Net property and equipment	$	99,241	$	82,761

Depreciation expense related to property, plant and equipment are summarized as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Depreciation expense	$	2,896	$	1,653	$	7,794	$	3,430


	September 30, 2023		December 31, 2022
Construction in progress
EV cell pilot line - Louisville, CO	$	1,095	$	2,010
Other cell and electrolyte development equipment - Louisville, CO		4,148		2,206
Electrolyte production and development equipment - Thornton, CO		32,159		35,820

Intangible Assets

9 Months Ended

Sep. 30, 2023

Intangible Assets

Intangible Assets

Note 4 – Intangible Assets

Intangible assets of the Company are summarized as follows:


	September 30, 2023				December 31, 2022
	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Amount		Amortization		Amount		Amortization
Intangible assets:
Licenses	$	149	$	(58)	$	149	$	(51)
Patents		92		(4)		—		—
Patents pending		1,316		—		984		—
Trademarks		13		—		9		—
Trademarks pending		17		—		17		—
Total amortized intangible assets	$	1,587	$	(62)	$	1,159	$	(51)

Amortization expense for intangible assets is summarized as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Amortization expense	$	3	$	2	$	11	$	7

Useful lives of intangible assets range from three to 20 years. Amortization expenses are allocated ratably across Operating Expenses based on Company personnel costs incurred.

Fair Value Measurements

9 Months Ended

Sep. 30, 2023

Fair Value Measurements

Fair Value Measurements

Note 5 – Fair Value Measurements

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis


	September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	125,985	$	—	$	—	$	125,985
Corporate Bonds	$	210,199	$	—	$	—	$	210,199
Government Bonds	$	58,652	$	—	$	—	$	58,652

Liabilities
Public Warrants	$	3,044	$	—	$	—	$	3,044
Private Placement Warrants	$	—	$	2,593	$	—	$	2,593


	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	165,179	$	—	$	—	$	165,179
Corporate Bonds	$	227,957	$	—	$	—	$	227,957
Government Bonds	$	42,865	$	—	$	—	$	42,865
U.S. Treasuries		9,930		—		—		9,930

Liabilities
Public Warrants	$	4,900	$	—	$	—	$	4,900
Private Placement Warrants	$	—	$	4,217	$	—	$	4,217

Fair Value of Warrants


	September 30, 2023			December 31, 2022
Exercise price	$	11.50		$	11.50
Stock price	$	2.02		$	2.54
Volatility		81.8	%		71.3	%
Term (years)		3.19			3.94
Risk-free rate		4.67	%		4.03	%

The following table provides a reconciliation of the Public Warrants measured at fair value using Level 1 inputs and Private Placement Warrants measured at fair value using Level 2 inputs:


	Public Warrants		Private Placement Warrants
	Level 1 Fair Value		Level 2 Fair Value
December 31, 2022	$	0.42	$	0.55
Change in fair value	$	0.04	$	0.31
March 31, 2023	$	0.46	$	0.86
Change in fair value	$	(0.15)	$	(0.43)
June 30, 2023	$	0.31	$	0.43
Change in fair value	$	(0.07)	$	(0.04)
September 30, 2023	$	0.24	$	0.39

The following tables provides a reconciliation of the September 30, 2023 three and nine months change in fair value for the Public Warrants and Private Placement Warrants:


					Three Months Change in
Warrant Class	Level	Warrants	June 30, 2023		Fair Value		September 30, 2023
Public Warrants	1	12,684,423	$	3,932	$	(888)	$	3,044
Private Placement Warrants	2	6,648,880	$	2,860	$	(267)	$	2,593
Total		19,333,303	$	6,792	$	(1,155)	$	5,637


					Nine Months Change in
Warrant Class	Level	Warrants	December 31, 2022		Fair Value		September 30, 2023
Public Warrants	1	12,684,423	$	4,900	$	(1,856)	$	3,044
Private Placement Warrants	2	6,648,880	$	4,217	$	(1,624)	$	2,593
Total		19,333,303	$	9,117	$	(3,480)	$	5,637

Warrant Liabilities

9 Months Ended

Sep. 30, 2023

Warrant Liabilities.

Warrant Liabilities

Note 6 – Warrant Liabilities

None of the Private Placement Warrants are redeemable by the Company so long as they are held by the initial purchasers of the Private Placement Warrants or their permitted transferees.

liabilities of $1,155 and $3,480 for the three and nine months ended September 30, 2023 and $0 and $28,183 for the three and nine months ended September 30, 2022, respectively.

There have been no changes to our Public or Private Placement Warrants, including redemption terms disclosed in our 2022 Form 10-K.

Stockholders' Equity

9 Months Ended

Sep. 30, 2023

Stockholders' Equity

Stockholders' Equity

Note 7 – Stockholders’ Equity

Common Stock


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Stock options exercised	58,065	1,293,762	2,084,695	8,162,906
Shares of common stock issued under ESPP	—	—	129,928	—
Shares of common stock issued for vested RSUs	32,442	—	195,590	20,672

Stock Based Compensation

9 Months Ended

Sep. 30, 2023

Stock Based Compensation

Stock Based Compensation

Note 8 – Stock-Based Compensation

There have been no changes to our equity incentive plans, the ESPP, or our accounting methodology for stock-based compensation, as disclosed in our 2022 Form 10-K.

For the three and nine months ended September 30, 2023, the Company recognized compensation costs totaling:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Equity-based compensation costs related to RSUs	$	1,248	$	618	$	2,839	$	1,133
Equity-based compensation costs related to stock options		2,012		1,970		5,486		5,365
Equity-based compensation costs related to ESPP		42		—		122		—
Total equity-based compensation costs	$	3,302	$	2,588	$	8,447	$	6,498
Unrecognized future compensation cost as of:						31,843		30,127

The following table summarizes our award activity for RSUs and stock options for the three and nine months ended September 30, 2023:



	RSUs	Stock Options
Balance at December 31, 2022	1,057,980		25,998,172
Granted	1,797,034		3,272,873
Vested or Exercised	—		(1,679,954)
Forfeited	(88,441)		(1,494,020)
Balance at March 31, 2023	2,766,573		26,097,071
Granted	1,753,207		1,904,016
Vested or Exercised	(215,553)		(346,676)
Forfeited	(47,181)		(466,635)
Balance at June 30, 2023	4,257,046		27,187,776
Granted	506,604		—
Vested or Exercised	(32,442)		(58,065)
Forfeited	(53,129)		(138,747)
Balance at September 30, 2023	4,678,079		26,990,964

Stock Options


	Nine Months Ended September 30,
	2023			2022
Approximate risk‑free rate		4.17	%		2.84	%
Volatility		46.91	%		44.69	%
Average expected life (years)		6 years			6 years
Dividend yield		—	%		—	%
Weighted‑average grant date fair value	$	2.80		$	7.26
Estimated fair value of total stock options granted	$	7,815		$	5,659

Earnings (Loss) Per Share

9 Months Ended

Sep. 30, 2023

Earnings (Loss) Per Share

Basic and Diluted Loss Per Share

Note 9 – Basic and Diluted Loss Per Share

Basic loss per share represents net loss attributable to common stock divided by the basic weighted average number of common stock outstanding during the period.

The table below sets forth the basic and diluted loss per share calculation for the three and nine months ended September 30, 2023 and 2022.


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Net loss attributable to common stockholders	$	(15,142)	$	(12,399)	$	(46,507)	$	(9,076)
Weighted average shares outstanding – basic and diluted		178,388,926		175,025,984		177,800,915		173,859,649
Basic and diluted loss per share	$	(0.08)	$	(0.07)	$	(0.26)	$	(0.05)

The table below sets forth (in shares) potentially dilutive securities excluded from the diluted loss per share calculation for the nine months ended September 30, 2023 and 2022.


	Nine Months Ended September 30,
	2023	2022
Warrants	19,333,303	19,333,303
2014 Plan & Solid Power, Inc. 2021 Equity Incentive Plan - Stock Options	26,386,130	26,109,658
Solid Power, Inc. 2021 Equity Incentive Plan - RSUs	3,192,511	558,910
ESPP - Common Stock	120,339	—
Total potentially dilutive securities	49,032,283	46,001,871

Leases

9 Months Ended

Sep. 30, 2023

Leases

Leases

Note 10 – Leases

The Company has certain equipment leases classified as finance leases as of September 30, 2023, as presented on the Balance Sheet.

The Company’s leases do not have any contingent rent payments and do not contain residual value guarantees.

The components of lease expense are as follows:


	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
Finance lease costs:
Amortization of right-of-use assets	$	50	$	141
Interest on lease liabilities		13		38
Operating lease costs		290		870
Total lease expense	$	353	$	1,049

The components of cash flow information related to leases are as follows:


	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
Operating outgoing cash flows – finance leases	$	13	$	39
Financing outgoing cash flows – finance leases		79		220
Operating outgoing cash flows – operating leases		284		851
Right-of-use assets obtained in exchange for new finance lease liabilities:		124		213
Right-of-use assets obtained in exchange for new operating lease liabilities:		—		—


	September 30, 2023
Finance lease
Weighted-average remaining lease term – finance leases (in years)	2.89
Weighted-average discount rate – finance leases	6.4	%
Operating lease
Weighted-average remaining lease term – operating leases (in years)	9.46
Weighted-average discount rate – operating leases	6.9	%

As of September 30, 2023, future minimum payments during the next five years and thereafter are as follows:


Fiscal year	Finance Lease		Operating Lease
2023 (remaining three months)	$	97	$	286
2024		386		1,173
2025		271		1,210
2026		141		1,248
2027		56		1,288
2028		16		1,329
Thereafter		-		5,242
Total		967		11,776
Less present value discount		81		3,011
Total lease liabilities	$	886	$	8,765

Related Party Transactions

9 Months Ended

Sep. 30, 2023

Related Party Transactions

Related Party Transactions

Note 11 – Related Party Transactions

Income Taxes

9 Months Ended

Sep. 30, 2023

Income Taxes

Income Taxes

Note 12 – Income Taxes

Contingencies

9 Months Ended

Sep. 30, 2023

Contingencies

Contingencies

Note 13 – Contingencies

Significant Accounting Policies (Policies)	9 Months Ended
Significant Accounting Policies (Policies)	Sep. 30, 2023
Significant Accounting Policies
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated financial statements of the Company have been prepared on the basis of generally accepted accounting principles in the United States (“GAAP”). The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from those estimates. All dollar amounts presented herein are in U.S. dollars and are in thousands, except par value and share and per share amounts. The accompanying unaudited condensed consolidated financial statements include accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Additionally, certain prior period amounts have been reclassified to conform to current period presentation in the accompanying unaudited condensed consolidated financial statements.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Leases In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), followed by other related ASUs that provided targeted improvements and additional practical expedient options. On January 1, 2022, the Company adopted the standards under Topic 842 using the modified retrospective method and elected a number of the practical expedients in its implementation. The key change that affected the Company relates to lessee accounting for operating leases that were historically off-balance sheet. Financial Instruments In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance introduces a new model for recognizing credit losses on financial instruments based on estimates of expected losses. ASU 2016-13 also provides updated guidance regarding the impairment of available-for-sale debt securities and includes additional disclosure requirements. The Company adopted this guidance as of January 1, 2022. The Company regularly reviews its available-for-sale marketable securities and evaluates the current expected credit losses by considering changes in credit ratings, historical experience, market data, issuer-specific factors, and current economic conditions. Based on this analysis, any allowance for credit losses is immaterial but would otherwise be recorded as a reduction to the carrying value of the asset. The Company reviews its receivable aging on an individual customer level, considering collectability of cash flows based on the risk of past events, current conditions, and forward-looking information. The Company establishes allowances for bad debts equal to the estimable portions of accounts receivable it expects not to collect. Allowances for doubtful accounts are recorded as reductions to the carrying values of the related receivables. To date, the Company has not recorded an allowance for doubtful accounts.

Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2023

Property, Plant and Equipment

Schedule of property and equipment


	September 30, 2023		December 31, 2022
Commercial production equipment	$	25,594	$	21,595
Laboratory equipment		8,307		3,278
Leasehold improvements		45,664		27,996
Furniture and computer equipment		1,635		1,482
Construction in progress		37,402		40,036
Total cost		118,602		94,387
Accumulated depreciation		(19,361)		(11,626)
Net property and equipment	$	99,241	$	82,761

Schedule of depreciation and amortization expense


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Depreciation expense	$	2,896	$	1,653	$	7,794	$	3,430

Schedule of construction in progress


	September 30, 2023		December 31, 2022
Construction in progress
EV cell pilot line - Louisville, CO	$	1,095	$	2,010
Other cell and electrolyte development equipment - Louisville, CO		4,148		2,206
Electrolyte production and development equipment - Thornton, CO		32,159		35,820

Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2023

Intangible Assets

Schedule of intangible assets


	September 30, 2023				December 31, 2022
	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Amount		Amortization		Amount		Amortization
Intangible assets:
Licenses	$	149	$	(58)	$	149	$	(51)
Patents		92		(4)		—		—
Patents pending		1,316		—		984		—
Trademarks		13		—		9		—
Trademarks pending		17		—		17		—
Total amortized intangible assets	$	1,587	$	(62)	$	1,159	$	(51)

Schedule of amortization expense for intangible assets


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Amortization expense	$	3	$	2	$	11	$	7

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Measurements

Schedule of financial assets and liabilities measured and recorded at fair value on a recurring basis


	September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	125,985	$	—	$	—	$	125,985
Corporate Bonds	$	210,199	$	—	$	—	$	210,199
Government Bonds	$	58,652	$	—	$	—	$	58,652

Liabilities
Public Warrants	$	3,044	$	—	$	—	$	3,044
Private Placement Warrants	$	—	$	2,593	$	—	$	2,593


	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	165,179	$	—	$	—	$	165,179
Corporate Bonds	$	227,957	$	—	$	—	$	227,957
Government Bonds	$	42,865	$	—	$	—	$	42,865
U.S. Treasuries		9,930		—		—		9,930

Liabilities
Public Warrants	$	4,900	$	—	$	—	$	4,900
Private Placement Warrants	$	—	$	4,217	$	—	$	4,217

Schedule of Level 2 inputs used in the recurring valuation of the Private Placement Warrants


	September 30, 2023			December 31, 2022
Exercise price	$	11.50		$	11.50
Stock price	$	2.02		$	2.54
Volatility		81.8	%		71.3	%
Term (years)		3.19			3.94
Risk-free rate		4.67	%		4.03	%

Schedule of reconciliation of warrants measured at fair value


	Public Warrants		Private Placement Warrants
	Level 1 Fair Value		Level 2 Fair Value
December 31, 2022	$	0.42	$	0.55
Change in fair value	$	0.04	$	0.31
March 31, 2023	$	0.46	$	0.86
Change in fair value	$	(0.15)	$	(0.43)
June 30, 2023	$	0.31	$	0.43
Change in fair value	$	(0.07)	$	(0.04)
September 30, 2023	$	0.24	$	0.39

Schedule of change in fair value for the Public Warrants and Private Placement Warrants


					Three Months Change in
Warrant Class	Level	Warrants	June 30, 2023		Fair Value		September 30, 2023
Public Warrants	1	12,684,423	$	3,932	$	(888)	$	3,044
Private Placement Warrants	2	6,648,880	$	2,860	$	(267)	$	2,593
Total		19,333,303	$	6,792	$	(1,155)	$	5,637


					Nine Months Change in
Warrant Class	Level	Warrants	December 31, 2022		Fair Value		September 30, 2023
Public Warrants	1	12,684,423	$	4,900	$	(1,856)	$	3,044
Private Placement Warrants	2	6,648,880	$	4,217	$	(1,624)	$	2,593
Total		19,333,303	$	9,117	$	(3,480)	$	5,637

Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2023

Stockholders' Equity

Schedule of stock options exercised


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Stock options exercised	58,065	1,293,762	2,084,695	8,162,906
Shares of common stock issued under ESPP	—	—	129,928	—
Shares of common stock issued for vested RSUs	32,442	—	195,590	20,672

Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Stock Based Compensation

Schedule of recognized & allocated compensation costs


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Equity-based compensation costs related to RSUs	$	1,248	$	618	$	2,839	$	1,133
Equity-based compensation costs related to stock options		2,012		1,970		5,486		5,365
Equity-based compensation costs related to ESPP		42		—		122		—
Total equity-based compensation costs	$	3,302	$	2,588	$	8,447	$	6,498
Unrecognized future compensation cost as of:						31,843		30,127

Schedule of award activity for stock options and RSU's

The following table summarizes our award activity for RSUs and stock options for the three and nine months ended September 30, 2023:



	RSUs	Stock Options
Balance at December 31, 2022	1,057,980		25,998,172
Granted	1,797,034		3,272,873
Vested or Exercised	—		(1,679,954)
Forfeited	(88,441)		(1,494,020)
Balance at March 31, 2023	2,766,573		26,097,071
Granted	1,753,207		1,904,016
Vested or Exercised	(215,553)		(346,676)
Forfeited	(47,181)		(466,635)
Balance at June 30, 2023	4,257,046		27,187,776
Granted	506,604		—
Vested or Exercised	(32,442)		(58,065)
Forfeited	(53,129)		(138,747)
Balance at September 30, 2023	4,678,079		26,990,964

Schedule of fair value of each option using the Black-Scholes option pricing model


	Nine Months Ended September 30,
	2023			2022
Approximate risk‑free rate		4.17	%		2.84	%
Volatility		46.91	%		44.69	%
Average expected life (years)		6 years			6 years
Dividend yield		—	%		—	%
Weighted‑average grant date fair value	$	2.80		$	7.26
Estimated fair value of total stock options granted	$	7,815		$	5,659

Earnings (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings (Loss) Per Share

Schedule of reconciliation of basic weighted average common shares outstanding to diluted weighted average shares outstanding


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Net loss attributable to common stockholders	$	(15,142)	$	(12,399)	$	(46,507)	$	(9,076)
Weighted average shares outstanding – basic and diluted		178,388,926		175,025,984		177,800,915		173,859,649
Basic and diluted loss per share	$	(0.08)	$	(0.07)	$	(0.26)	$	(0.05)

Schedule of potentially dilutive securities excluded from the diluted earnings per share calculation


	Nine Months Ended September 30,
	2023	2022
Warrants	19,333,303	19,333,303
2014 Plan & Solid Power, Inc. 2021 Equity Incentive Plan - Stock Options	26,386,130	26,109,658
Solid Power, Inc. 2021 Equity Incentive Plan - RSUs	3,192,511	558,910
ESPP - Common Stock	120,339	—
Total potentially dilutive securities	49,032,283	46,001,871

Leases (Tables)

9 Months Ended

Sep. 30, 2023

Leases

Schedule of components of lease related expense


	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
Finance lease costs:
Amortization of right-of-use assets	$	50	$	141
Interest on lease liabilities		13		38
Operating lease costs		290		870
Total lease expense	$	353	$	1,049

Schedule of components of cash flow information related to leases


	Three Months Ended		Nine Months Ended
	September 30, 2023		September 30, 2023
Operating outgoing cash flows – finance leases	$	13	$	39
Financing outgoing cash flows – finance leases		79		220
Operating outgoing cash flows – operating leases		284		851
Right-of-use assets obtained in exchange for new finance lease liabilities:		124		213
Right-of-use assets obtained in exchange for new operating lease liabilities:		—		—

Schedule of remaining weighted-average lease term and weighted-average discount rate


	September 30, 2023
Finance lease
Weighted-average remaining lease term – finance leases (in years)	2.89
Weighted-average discount rate – finance leases	6.4	%
Operating lease
Weighted-average remaining lease term – operating leases (in years)	9.46
Weighted-average discount rate – operating leases	6.9	%

Schedule of future minimum payments under operating lease


Fiscal year	Finance Lease		Operating Lease
2023 (remaining three months)	$	97	$	286
2024		386		1,173
2025		271		1,210
2026		141		1,248
2027		56		1,288
2028		16		1,329
Thereafter		-		5,242
Total		967		11,776
Less present value discount		81		3,011
Total lease liabilities	$	886	$	8,765

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment
Gross property and equipment	$ 118,602	$ 94,387
Accumulated depreciation	(19,361)	(11,626)
Net property and equipment	99,241	82,761
Commercial production equipment
Property, Plant and Equipment
Gross property and equipment	25,594	21,595
Laboratory equipment
Property, Plant and Equipment
Gross property and equipment	8,307	3,278
Leasehold improvements
Property, Plant and Equipment
Gross property and equipment	45,664	27,996
Furniture and computer equipment
Property, Plant and Equipment
Gross property and equipment	1,635	1,482
Construction in progress
Property, Plant and Equipment
Gross property and equipment	$ 37,402	$ 40,036

Property, Plant and Equipment - Depreciation expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Property and Equipment
Depreciation expense			$ 7,805	$ 3,437
Property, Plant and Equipment
Property and Equipment
Depreciation expense	$ 2,896	$ 1,653	$ 7,794	$ 3,430

Property, Plant and Equipment - Construction in progress (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
EV cell line
Property, Plant and Equipment
Construction in progress	$ 1,095	$ 2,010
Other cell development equipment
Property, Plant and Equipment
Construction in progress	4,148	2,206
Electrolyte production and development equipment
Property, Plant and Equipment
Construction in progress	$ 32,159	$ 35,820

Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Intangible assets:
Gross Carrying Amount	$ 1,587	$ 1,159
Accumulated Amortization	$ (62)	(51)
Minimum
Intangible assets:
Estimated useful life of intangible assets	3 years
Maximum
Intangible assets:
Estimated useful life of intangible assets	20 years
Licenses
Intangible assets:
Gross Carrying Amount	$ 149	149
Accumulated Amortization	(58)	(51)
Patents
Intangible assets:
Gross Carrying Amount	92
Accumulated Amortization	(4)
Patents pending
Intangible assets:
Gross Carrying Amount	1,316	984
Trademarks
Intangible assets:
Gross Carrying Amount	13	9
Trademarks pending
Intangible assets:
Gross Carrying Amount	$ 17	$ 17

Intangible Assets - Amortization expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Intangible Assets
Amortization expense	$ 3	$ 2	$ 11	$ 7

Fair Value Measurements - Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Liabilities
Purchase of marketable securities	$ 256,584	$ 448,757
Recurring \| Public Warrants
Liabilities
Liabilities	3,044		$ 4,900
Recurring \| Private Placement Warrants
Liabilities
Liabilities	2,593		4,217
Recurring \| Level 1 \| Public Warrants
Liabilities
Liabilities	3,044		4,900
Recurring \| Level 2 \| Private Placement Warrants
Liabilities
Liabilities	2,593		4,217
Recurring \| Level 3
Liabilities
Transfers in or out of Level 3	0		0
Recurring \| Commercial Paper
Assets
Assets	125,985		165,179
Recurring \| Commercial Paper \| Level 1
Assets
Assets	125,985		165,179
Recurring \| Corporate Bonds
Assets
Assets	210,199		227,957
Recurring \| Corporate Bonds \| Level 1
Assets
Assets	210,199		227,957
Recurring \| Municipal Bonds
Assets
Assets	58,652		42,865
Recurring \| Municipal Bonds \| Level 1
Assets
Assets	$ 58,652		42,865
Recurring \| U.S. Treasuries
Assets
Assets			9,930
Recurring \| U.S. Treasuries \| Level 1
Assets
Assets			$ 9,930

Fair Value Measurements - Measurement inputs (Details) - Recurring - Level 2 - Private Placement Warrants	Sep. 30, 2023 Y $ / shares	Dec. 31, 2022 Y $ / shares
Exercise Price
Fair Value Measurements
Measurement input, warrants	11.50	11.50
Stock Price
Fair Value Measurements
Measurement input, warrants	2.02	2.54
Volatility
Fair Value Measurements
Measurement input, warrants	81.8	71.3
Term
Fair Value Measurements
Measurement input, warrants \| Y	3.19	3.94
Risk-free rate
Fair Value Measurements
Measurement input, warrants	4.67	4.03

Fair Value Measurements - Public Warrants measured at fair value using Level 1 directly observable inputs and Private Placement Warrants (Details) - Recurring - $ / shares	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Public Warrants \| Level 1
Reconciliation
Beginning balance, per share	$ 0.31	$ 0.46	$ 0.42
Change in fair value	(0.07)	(0.15)	0.04
Ending balance, per share	0.24	0.31	0.46
Private Placement Warrants \| Level 2
Reconciliation
Beginning balance, per share	0.43	0.86	0.55
Change in fair value	(0.04)	(0.43)	0.31
Ending balance, per share	$ 0.39	$ 0.43	$ 0.86

Fair Value Measurements - Fair value for the Public Warrants and Private Placement Warrants (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Recurring
Fair Value Measurements
Number of warrants outstanding			19,333,303	19,333,303
Reconciliation
Balance at the beginning	$ 6,792	$ 9,117
Change in fair value	(1,155)	(3,480)
Balance at the end	$ 5,637	$ 5,637
Public Warrants
Fair Value Measurements
Number of warrants outstanding	12,684,423	12,684,423		11,666,636
Public Warrants \| Fair Value, Recurring \| Level 1
Fair Value Measurements
Number of warrants outstanding			12,684,423	12,684,423
Reconciliation
Balance at the beginning	$ 3,932	$ 4,900
Change in fair value	(888)	(1,856)
Balance at the end	$ 3,044	$ 3,044
Private Placement Warrants
Fair Value Measurements
Number of warrants outstanding	6,648,880	6,648,880		7,666,667
Private Placement Warrants \| Fair Value, Recurring \| Level 2
Fair Value Measurements
Number of warrants outstanding			6,648,880	6,648,880
Reconciliation
Balance at the beginning	$ 2,860	$ 4,217
Change in fair value	(267)	(1,624)
Balance at the end	$ 2,593	$ 2,593

Warrant Liabilities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Warrant Liabilities
Change in fair value of warrant liabilities	$ 1,155	$ 0	$ 3,480	$ 28,183
Warrants
Warrant Liabilities
Class of warrant or right, number of securities called by each warrant or right	1		1
Exercise price of warrants	$ 11.50		$ 11.50
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability value	$ 101,253		$ 101,253
Public Warrants
Warrant Liabilities
Number of warrants outstanding	12,684,423		12,684,423		11,666,636
Private Placement Warrants
Warrant Liabilities
Number of warrants outstanding	6,648,880		6,648,880		7,666,667

Stockholders' Equity - Stock options exercised (Details) - Common Stock - shares	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stockholders' Equity
Stock options exercised (in shares)	58,065	1,293,762	2,026,630	6,869,144	2,084,695	8,162,906
Shares issued under ESPP (in shares)			129,928		129,928
Shares issued upon vesting of RSUs (in shares)	32,442		163,148	20,672	195,590	20,672

Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		15 Months Ended
Stockholders' Equity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Stockholders' Equity
Cash received from options exercised			$ 194	$ 771
Cash received from shares issued under the ESPP			214	0	$ 0
Equity Incentive2014 Plan [Member]
Stockholders' Equity
Cash received from options exercised	$ 11	$ 417	$ 194	$ 771

Stock Based Compensation - Compensation costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Compensation costs
Equity-based compensation cost	$ 3,302	$ 2,588	$ 8,447	$ 6,498
Unrecognized compensation costs related to restricted stock units	31,843	30,127	31,843	30,127
Restricted stock units (RSUs)
Compensation costs
Equity-based compensation cost	1,248	618	2,839	1,133
Employee stock option
Compensation costs
Equity-based compensation cost	2,012	$ 1,970	5,486	$ 5,365
ESPP
Compensation costs
Equity-based compensation cost	$ 42		$ 122

Stock Based Compensation - Stock options and Restricted stock units (Details) - shares	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2023	Sep. 30, 2023
Restricted stock units (RSUs)
Restricted Stock Units.
Outstanding at beginning of period	4,257,046	2,766,573	1,057,980	1,057,980	1,057,980
Granted	506,604	1,753,207	1,797,034
Vested	(32,442)	(215,553)
Forfeited	(53,129)	(47,181)	(88,441)
Outstanding at end of period	4,678,079	4,257,046	2,766,573	4,257,046	4,678,079
Employee stock option
Number of Shares
Outstanding at beginning of period	27,187,776	26,097,071	25,998,172	25,998,172	25,998,172
Granted		1,904,016	3,272,873
Exercised	(58,065)	(346,676)	(1,679,954)
Forfeited or expired	(138,747)	(466,635)	(1,494,020)
Outstanding at end of period	26,990,964	27,187,776	26,097,071	27,187,776	26,990,964

Stock Based Compensation - Fair value of options granted (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Stock Based Compensation
Approximate risk-free rate	4.17%	2.84%
Volatility	46.91%	44.69%
Average expected life (years)	6 years	6 years
Weighted-average grant date fair value	$ 2.80	$ 7.26
Estimated fair value of total stock options granted (in thousands)	$ 7,815	$ 5,659

Earnings (Loss) Per Share - Schedule of reconciliation of basic weighted average common shares outstanding to diluted weighted average shares outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings (Loss) Per Share
Net income (loss) attributable to common stockholders	$ (15,142)	$ (12,399)	$ (46,507)	$ (9,076)
Weighted average shares outstanding - basic	178,388,926	175,025,984	177,800,915	173,859,649
Weighted average shares outstanding - diluted	178,388,926	175,025,984	177,800,915	173,859,649
Earnings (loss) per share - Basic	$ (0.08)	$ (0.07)	$ (0.26)	$ (0.05)
Earnings (loss) per share - Diluted	$ (0.08)	$ (0.07)	$ (0.26)	$ (0.05)

Earnings (Loss) Per Share - Schedule of potentially dilutive securities excluded from the diluted loss per share calculation (Details) - shares	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Earnings (Loss) Per Share
Total potentially dilutive securities	49,032,283	46,001,871
Warrants
Earnings (Loss) Per Share
Total potentially dilutive securities	19,333,303	19,333,303
2014 & 2021 Equity Incentive Plan - Stock Options
Earnings (Loss) Per Share
Total potentially dilutive securities	26,386,130	26,109,658
2021 Equity Incentive Plan - Restricted Stock Units
Earnings (Loss) Per Share
Total potentially dilutive securities	3,192,511	558,910
2021 Employee Stock Purchase Plan
Earnings (Loss) Per Share
Total potentially dilutive securities	120,339

Leases - Components of lease (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022	Sep. 01, 2021
Leases
Operating lease renewal term (in years)			5 years	5 years
Finance lease costs:
Amortization of right-of-use assets	$ 50	$ 141
Interest on lease liabilities	13	38
Operating lease costs	290	870
Total lease expense	$ 353	$ 1,049

Leases - Components of supplemental cash flow information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Leases
Operating outgoing cash flows - finance lease	$ 13	$ 39
Financing outgoing cash flows - finance lease	79	220
Operating outgoing cash flows - operating lease	284	851
Right-of-use assets obtained in exchange for new finance lease liabilities:	$ 124	$ 213

Leases - Lease term and discount rate (Details)	Sep. 30, 2023
Leases
Weighted-average remaining lease term - finance lease (in years)	2 years 10 months 20 days
Weighted-average discount rate - finance lease	6.40%
Weighted-average remaining lease term - operating lease (in years)	9 years 5 months 15 days
Weighted-average discount rate - operating lease	6.90%

Leases - Schedule of future minimum payments (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Finance Lease
2023 (remaining six months)	$ 97
2024	386
2025	271
2026	141
2027	56
2028	16
Total	967
Less present value discount	81
Total lease liabilities	886
Operating Lease
2023 (remaining six months)	286
2024	1,173
2025	1,210
2026	1,248
2027	1,288
2028	1,329
Thereafter	5,242
Total	11,776
Less present value discount	3,011
Total lease liabilities	$ 8,765

Related Party Transaction (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Revenue from Related Parties	$ 6,366	$ 2,813	$ 15,063	$ 7,591
BMW
Defined Benefit Plan Disclosure [Line Items]
Amounts due from related party	5,048		5,048
Revenue from Related Parties	$ 3,657		$ 10,128