HTM U.S. Geothermal Inc. (delisted)

* Includes 16,500 Shares beneficially owned directly by Mr. Pappas, consisting of Shares underlying certain options awarded to Mr. Pappas in his capacity as a director of the Issuer that are exercisable within 60 days of the date hereof.

The following constitutes Amendment No. 8 to the Schedule 13D filed by the undersigned (“Amendment No. 8”). This Amendment No. 8 amends the Schedule 13D as specifically set forth herein.

Item 3 is hereby amended and restated to read as follows:

The Shares purchased by JCP Partnership and JCP Drawdown III were purchased with working capital (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business) in open market purchases, except as otherwise noted. The aggregate purchase price of the 938,360 Shares owned directly by JCP Partnership is approximately $3,281,456, including brokerage commissions. The aggregate purchase price of the 1,916,588 Shares owned directly by JCP Drawdown III is approximately $8,724,372, including brokerage commissions.

The Shares beneficially owned directly by Mr. Pappas represent Shares underlying certain options awarded to Mr. Pappas in his capacity as a director of the Issuer that are exercisable within 60 days of the date hereof. Mr. Pappas has also been awarded an additional 8,166 options that do not vest within the next 60 days.

Item 4 is hereby amended to add the following:

On January 24, 2018, JCP Management and certain of its affiliates (collectively, “JCP”) entered into a voting agreement (the “Voting Agreement”) with Ormat Nevada Inc., a Delaware corporation (“Ormat”), in connection with that certain Agreement and Plan of Merger (the “Merger Agreement”), dated January 24, 2018, by and among Ormat, OGP Holding Corp., a Delaware corporation and wholly-owned subsidiary of Ormat (“Merger Sub”), and the Issuer, pursuant to which Merger Sub will merge with and into the Issuer (the “Merger”), with the Issuer continuing as a subsidiary of Ormat. Under the terms of the Merger Agreement, stockholders of the Issuer will receive $5.45 per Share in cash. The Merger is expected to close in the second quarter of 2018, subject to the receipt of stockholder approval of the Issuer and satisfaction of customary closing conditions, including applicable regulatory approvals.

Pursuant to the Voting Agreement, JCP agreed, among other things, to vote all of the Shares it beneficially owns (and all other Shares that it may subsequently acquire) to approve the Merger and the Merger Agreement; provided, however, that JCP’s voting obligations will be suspended in the event that, and for so long as, the Issuer’s Board of Directors is not recommending that stockholders of the Issuer vote in favor of the Merger. The Voting Agreement will terminate upon the earliest to occur of (a) the effective time of the Merger, (b) the date on which the Merger Agreement is terminated in accordance with its terms and (c) the making of any change by amendment, waiver or other modification to any provision of the Merger Agreement that decreases the amount or changes the form of the Merger Consideration (as defined in the Merger Agreement).

The foregoing description of the Voting Agreement is qualified in its entirety by reference to the Voting Agreement, which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. In addition, reference is made to the Merger Agreement, which is attached as Exhibit 2.1 to the Issuer’s Form 8-K filed with the Securities and Exchange Commission on January 25, 2018.

Items 5(a) – (c) are hereby amended and restated to read as follows:

The aggregate percentage of Shares reported owned by each person named herein is based upon 19,449,984 Shares outstanding as of December 31, 2017, which is the total number of Shares outstanding as reported in the Merger Agreement, which is attached as Exhibit 2.1 to the Issuer’s Current Report on Form 8-K filed with the Securities and Exchange Commission on January 25, 2018.

Percentage: Approximately 4.8%

Percentage: Approximately 9.9%

Percentage: Approximately 14.7%

Percentage: Approximately 14.7%

Percentage: Approximately 14.7%

Percentage: Approximately 14.8%

The Reporting Persons, as members of a “group” for the purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, may be deemed the beneficial owner of the Shares directly owned by the other Reporting Persons. Each Reporting Person disclaims beneficial ownership of such Shares except to the extent of his or its pecuniary interest therein.

Item 6 is hereby amended to add the following:

On January 24, 2018, JCP and Ormat entered into the Voting Agreement as defined and described in Item 4 above and attached as Exhibit 99.1 hereto.

Item 7 is hereby amended to add the following exhibit:

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: January 25, 2018