EVRG Evergy Inc

Dividend Reinvestment and Direct Stock Purchase Plan

628,484 Shares of Common Stock (Without Par Value)

Great Plains Energy Incorporated (“Great Plains Energy”) offers you the opportunity to participate in its Dividend Reinvestment and Direct Stock Purchase Plan (“Plan”). The Plan is a convenient way for you to:

This is a restatement of the Plan. If you are currently enrolled in the Plan, your enrollment will continue uninterrupted.

The administrator of the Plan may buy shares of common stock on the open market (New York Stock Exchange), in private transactions, or directly from Great Plains Energy. If it buys the shares on the open market, the price of the shares will be the weighted average cost of all shares purchased for the relevant investment date plus a nominal processing fee (currently $0.05 per share). If it buys the shares from Great Plains Energy, the price will be the average of the high and low prices of the common stock for the relevant investment date as reported on the New York Stock Exchange “NYSE”—Consolidated Tape.

Great Plains Energy’s common stock is traded on the New York Stock Exchange under the symbol “GXP”. The closing price of the common stock on March 9, 2018 on the NYSE Consolidated Tape was $30.13 per share.

Participating in the Plan and investing in our common stock involves risks. You should carefully consider the information under the heading “Risk Factors” beginning on page 5.

Our principal executive office is located at 1200 Main Street, Kansas City, Missouri 64105, and the telephone number is (816) 556-2200.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense .

The date of this prospectus is March 12, 2018

Table of Contents

Dividend Reinvestment Options

You can reinvest cash dividends paid on all or some of your shares in the Plan by making the appropriate selection on the enrollment form, or on-line through the Plan administrator’s website, www.computershare.com/investor. You can also change your reinvestment selection by either sending written notice to the Plan administrator or on-line through the Plan administrator’s website. To be effective for a particular dividend period, the Plan administrator must receive your instructions prior to the record date for the dividend. Your dividend reinvestment options are:

O THER I NVESTMENT I NFORMATION

No interest is paid on funds held by the administrator pending investment. All investments must be in U.S. dollars and are subject to collection by the Plan administrator of full face value.

There is a $35 charge for each check, electronic funds transfer, or other investment that is rejected due to insufficient funds. The Plan administrator will consider the request for investment of such funds to be null and void, and will immediately remove from your account those shares, if any, purchased upon the prior credit of such funds. The Plan administrator will be entitled to sell shares in your account to satisfy any uncollected amount, plus the $35 charge. If the net proceeds of the sale of those shares are insufficient to satisfy the balance of any uncollected amount, the Plan administrator is entitled to sell such additional shares from your account as may be necessary to satisfy any uncollected balance. When you enroll in the Plan, you authorize the Plan administrator to deduct this charge and sell shares from your Plan account, if necessary.

Direct Deposit . You may have any cash dividend that is not being reinvested deposited directly into your bank account. Please contact the Plan administrator for details. You may also elect direct deposit through the Plan administrator’s website. You may change direct deposit account information or terminate direct deposit by providing notice prior to the record date to the administrator. To be effective for a particular dividend period, the Plan administrator must receive your instructions fifteen calendar days prior to the record date for the dividend.

Share Safekeeping . You may deposit your common stock certificates with the Plan administrator for safekeeping. To take advantage of this feature, send your share certificates to the Plan administrator by registered, insured mail along with a completed form, or written instructions. Do not endorse your certificates.

The administrator will transfer your certificated shares into its name or the name of its nominee and deposit the shares in your Plan account in book-entry form. Safekeeping of your certificates will not affect your dividend reinvestment election for these shares. You may request the Plan administrator at any time to issue certificates to you for these shares, and new, differently numbered certificates will be issued.

Share Certificates . The Plan administrator holds reinvested dividends and shares purchased through the Plan in book-entry form. You may request a certificate for all or some of your Plan shares by calling or sending a

9

Table of Contents

written request to the Plan administrator, or through its website. There may be a fee for certificate issuance. Certificates for fractional shares will not be issued. Instead, you will receive cash payment for any fractional share. The issuance of a certificate does not affect the dividend reinvestment option you previously selected for the shares. You may not pledge shares of stock held in book-entry form by the Plan administrator in your Plan account as collateral for a loan or otherwise assign those shares.

Selling Shares through the Plan . You can sell some or all of the shares held in your Plan account at any time by contacting the Plan administrator. You have four choices when making a sale through the Plan:

10

Table of Contents

Any fractional share will be rounded up to a whole share for purposes of calculating the per share fee. All sales requests processed over the telephone by a customer service representative entail an additional fee of $15. All per - share processing fees include any brokerage commissions the Plan administrator is required to pay. All sale instructions are final when the Plan administrator receives them; your sale instructions cannot be stopped or cancelled. The Plan administrator may, for various reasons, require your transaction request to be submitted in writing. You should contact the Plan administrator to determine if there are any limitations applicable to your particular sale request.

A request to sell all of your shares in your Plan account will be treated as a withdrawal from the Plan, as described in the next section.

Closing a Plan Account . You can close your Plan account at any time by completing and sending back the Transaction Request form attached to your Plan statement, or by calling or sending written notification to the Plan administrator, or through its website. Electing to sell or withdraw all shares from your Plan account automatically terminates your Plan participation. If you close your Plan account by withdrawing all shares, the Plan administrator will transfer all whole shares in your Plan account into another book-entry account in your name (or, at your election, will issue you a certificate for such shares) and the cash value of any fractional share will be paid to you by check, less a service fee of $15 and a processing fee of $0.12 per share sold.

If instructions to close a Plan account for which dividends are to be reinvested are received less than five business days prior to, or less than two business days after, a dividend payment record date, the Plan administrator, in its sole discretion, may either distribute such dividends in cash or reinvest them in shares on behalf of such Plan account. In the event reinvestment is made, the Plan administrator will process the account closing as soon as practicable, but in no event later than five business days after any dividend disbursement is allocated to your Plan account. After you close a Plan account, you cannot make future investments through the Plan without re-enrolling.

We, or the Plan administrator, on our behalf, have the right to deny, suspend or terminate your participation in the Plan on grounds of excessive enrollment and termination. This is intended to minimize administrative expense and encourage long-term investment.

Sources and Price of Shares . We may direct whether the Plan administrator purchases shares (i) in the open market on The New York Stock Exchange, (ii) in privately negotiated transactions on terms and conditions acceptable to the Plan administrator, or (iii) from us. Any purchase of shares from us by the Plan administrator will be made pursuant to a registration statement filed with the SEC of which this prospectus is a part. The price of any shares purchased from us will be the average of the high and low sale prices as reported on the NYSE Consolidated Tape on the transaction date.

If shares are purchased in the open market, the Plan administrator may combine your purchase requests with other purchase requests received from other plan participants and will generally batch purchase types (dividend and optional cash investments) for separate execution by the Plan administrator’s broker. Shares for the plan will be purchased on the NYSE, or in privately negotiated transactions. The Plan administrator may also direct its broker to execute each purchase type in several batches throughout a trading day. Depending on the number of shares being purchased and current trading volume in the shares, the Plan administrator’s broker may execute purchases for any batch or batches in multiple transactions and over more than one day. If different purchase types are batched, the price per share of the common stock purchased for each participant’s account, whether purchased with reinvested dividends, with initial cash investments or with optional cash, shall be the weighted

11

Table of Contents

average price of the specific batch for such shares purchased by the Plan administrator’s broker on that day to satisfy plan requirements. If shares are purchased for the Plan on the open market, the Plan administrator may, at its sole discretion, begin purchasing shares no earlier than three business days prior to any investment date and complete purchasing shares no later than 30 days after such date except where beginning at an earlier date is permissible or where completion at a later date is necessary or advisable under applicable federal regulatory and securities laws. The Plan administrator will use its best efforts to cause all funds received by it to be applied to the purchase of shares within the above discussed time period. If shares are purchased directly from us, such purchase shall take place on the investment date.

The Plan administrator may combine all participants’ funds for the purpose of making purchases of shares for the same investment period under the Plan.

You do not have control or authority to direct the price or time (except for market, day limit or GTC limit orders) at which common stock is purchased or sold for Plan accounts. Therefore, you bear market risk associated with fluctuations in the price of common stock .

Account Statements . You will receive quarterly statements from the Plan administrator of your account reflecting the amount invested, the purchase price, the number of shares purchased, deposited, sold, transferred, or withdrawn, the total number of shares accumulated and other information quarterly or whenever your account has a transaction activity. The statement will also reflect the cost basis of any shares acquired after January 1, 2011 and should be retained for income tax purposes. The quarterly statements consolidate all shares, certificated as well as book-entry shares. You should keep your statements for income tax and other purposes. If you need a replacement statement, you should contact the Plan administrator. There may be a fee for providing copies of statements for any period in a prior calendar year. Account information may also be obtained through the Investor Centre feature of the Plan administrator’s website, www.computershare.com/investor.

Reports . All notices, statements and reports will be mailed to the latest address on record with the Plan administrator. Address changes may be made in writing or by telephone to the Plan administrator.

M ISCELLANEOUS

Rights Offering, Stock Dividends and Stock Splits . Stock dividends or split shares on your Plan book-entry shares will be credited to your book-entry Plan account. In the event of a rights offering, rights will be based on the number of shares credited to your account.

Voting Rights . You can vote all whole and fractional shares of common stock held in your Plan account in person or by proxy. If you do not vote in person or by proxy, your shares will not be voted.

Limitation of Liability . We, our directors, officers, employees, and the Plan administrator and its representatives are not liable for anything done in good faith or good faith omissions in administering the Plan. This includes any claim of liability based on the prices or times at which shares are purchased or sold or any change in market price of shares or for the payment or amount of any future dividends on common stock. This is not a waiver of rights you may have under applicable securities laws.

Termination of the Plan . We can change, suspend or terminate the Plan at any time, in whole or in part, or may terminate the participation of any participant. We reserve the right to close your Plan account if you do not own at least one whole book-entry or certificate share of record. In that case, notices will be mailed to your last known address, along with a check for the cash value of any fractional share.

Material U.S. Federal Income Tax Consequences . The following is a summary of material U.S. federal income tax consequences of participation in the Plan as of the date of this prospectus. This summary is limited to Plan participants who hold our common stock as a capital asset (generally, property held for investment). This

12

Table of Contents

summary is based on current law (including administrative guidance), is for general information only and is not tax advice. This summary may not reflect every possible situation resulting from participation in the Plan and does not address participants subject to special treatment under the U.S. federal income tax laws (including, for example, insurance companies, partnerships and other pass-through entities, tax-exempt organizations, financial institutions, broker-dealers, participants who hold our stock as part of a “straddle,” “hedge,” “conversion transaction” or other integrated investment and participants whose functional currency is not the U.S. dollar). All participants should consult with their own tax advisors regarding the specific tax consequences to them under applicable federal, state, local and foreign tax laws and the impact of any changes in applicable tax laws, which may have retroactive effect.

Tax Consequences to U.S. Participants . This section applies to you if you are a U.S. participant. You are a U.S. participant if, for U.S. federal income tax purposes, you are a participant in the Plan and you are:

Initial and Optional Investments . In general, a U.S. participant who makes an initial or optional investment under the Plan will not realize gain or loss for U.S. federal income tax purposes as a result of the purchase of shares pursuant to such initial or optional investment and the participant’s tax basis in such shares will equal the purchase price of the shares (including the amount of any applicable brokerage fees). The appropriate treatment of the enrollment fee paid by a participant in connection with an initial investment (as an addition to basis, a deductible expense or otherwise) is unclear and may vary depending on a U.S. participant’s particular circumstances; participants should consult their own tax advisors regarding the treatment of such fees with respect to their circumstances. A U.S. participant’s holding period for such shares generally will begin on the day following the date on which such shares are credited to the participant’s Plan account.

Reinvestment of Dividends . In general, the full amount of cash dividends paid to a U.S. participant by us (including any amount used to pay applicable brokerage commissions for open market purchases and any amount paid with respect to fractional shares) is considered received by the U.S. participant for U.S. federal income tax purposes whether actually received or reinvested under the Plan. If a reinvested dividend is used to acquire shares of our common stock from us, a U.S. participant generally will be treated as having received a distribution in an amount equal to the fair market value of the acquired common stock (including any amounts received with respect to fractional shares). If a reinvested dividend is used to purchase common shares in the open market, a U.S. participant generally will be treated as having received a distribution equal to the amount of the cash dividend used to make such purchase (including any amount used to pay applicable brokerage commissions and any amount received with respect to fractional shares). In all cases, the amount of distribution received by a U.S. participant, for U.S. federal income tax purposes, will include the amount of any tax withholding that was deducted from the reinvested dividend.

Generally, any such distribution (including deemed distributions described above) will be taxable to a U.S. participant as ordinary dividend income to the extent of the participant’s pro rata share of our current or accumulated earnings and profits for U.S. federal income tax purposes. Dividend income recognized by a corporation may be eligible for the dividends-received deduction if certain holding period and other requirements are met. Dividend income recognized by an individual or other non-corporate participant may be taxable at the preferential rates applicable to long-term capital gain if certain holding period and other requirements are met. Otherwise, dividends will be taxable at ordinary income tax rates. The amount of any distribution in excess of a

13

Table of Contents

U.S. participant’s pro rata share of our current and accumulated earnings and profits will reduce the participant’s tax basis in the common stock with respect to which the distribution was received, and, to the extent it exceeds such tax basis, will result in capital gain that will be taxable as long-term capital gain if the distribution is with respect to shares that have been held by the participant for more than one year.

Shares of our common stock purchased on the open market or purchased from us with reinvested distributions generally will have a basis equal to the amount of the distribution a U.S. participant is treated as receiving, as described above, less the amount of any tax withholding deducted from the reinvested distribution. A U.S. participant’s holding period for such shares generally will begin on the day following the date on which such shares are credited to the participant’s Plan account.

Deposit, Withdrawal or Sale of Shares . A U.S. participant generally will not realize gain or loss for U.S. federal income tax purposes upon the deposit of shares to the Plan or the withdrawal of whole shares in certificate form from the Plan, but generally will recognize capital gain or loss on the sale or other taxable disposition of any of its shares held in the Plan (including the receipt of cash for fractional shares). The amount of gain or loss generally will be the difference between the amount realized from the sale or other taxable disposition of shares (including amounts received with respect to fractional shares) and the tax basis of those shares (or fractional shares). Unless a U.S. participant specifically identifies the shares that are being sold, a first in, first out, or FIFO, method will be used when determining the tax basis of the shares sold. Capital gain will be taxable as long-term capital gain if such shares have been held by the participant for more than one year. Under current law, net long term capital gains recognized by individuals and other non-corporate participants are generally eligible for taxation at a preferential rate. The deductibility of capital losses is subject to limitations.

Medicare Tax on Net Investment Income. A U.S. participant that is an individual or estate, or a trust that does not fall into a special class of trusts that is exempt from such tax, will be subject to a 3.8% tax on the lesser of (1) the U.S. participant’s “net investment income” (in the case of individuals) or “undistributed net investment income” (in the case of estates and trusts) for the relevant taxable year and (2) the excess of the participant’s “modified adjusted gross income” (in the case of individuals) or “adjusted gross income” (in the case of estates and trusts) for the taxable year over a certain threshold (which in the case of individuals will be between $125,000 and $250,000, depending on the individual’s circumstances). A U.S. participant’s net investment income generally will include its dividends on our common stock and its net gains with respect to our common stock. If you are a U.S. participant that is an individual, estate or trust, you are urged to consult your tax advisors regarding the applicability of the Medicare tax to your income and gains in respect of your investment in our common stock.

Tax Consequences to Non-U.S. Participants . This section applies to you if you are a non-U.S. participant. A non-U.S. participant is a participant in the Plan that is neither a U.S. participant nor a partnership or other pass-through entity.

Initial and Optional Investments . The U.S. federal income tax consequences of a non-U.S. participant who makes an initial or optional investment under the Plan are similar to those consequences described above under “Tax Consequences to U.S. Participants— Initial and Optional Investments. ”

Reinvestment of Dividends . Distributions with respect to our common stock received by non-U.S. participants (including deemed distributions described above under “Tax Consequences to U.S. Participants— Reinvestment of Dividends ,”) will be treated as dividends to the extent paid from our current or accumulated earnings and profits as determined for U.S. federal income tax purposes.

Subject to the discussions below on backup withholding and FATCA, dividends paid to a non-U.S. participant that are not effectively connected with the non-U.S. participant’s conduct of a trade or business within the United States will be subject to U.S. federal withholding tax at a rate of 30% of the gross amount of the dividends (or a lower rate specified under an applicable income tax treaty). In order to receive a reduced treaty rate, a non-U.S. participant must provide to the applicable withholding agent an IRS Form W-8BEN or

14

Table of Contents

W-8BEN-E (or applicable substitute or successor form) properly certifying eligibility for the reduced rate. Non-U.S. participants should consult their tax advisors regarding their entitlement to benefits under an applicable income tax treaty.

Subject to the discussions below on backup withholding and FATCA, dividends that are effectively connected with a non-U.S. participant’s conduct of a trade or business in the United States and, if an income tax treaty so requires, are attributable to a permanent establishment maintained by the non-U.S. participant in the United States, are taxed on a net-income basis at the regular graduated U.S. income tax rates and in the manner applicable to U.S. persons. In that case, the applicable withholding agent will not have to withhold U.S. federal withholding tax if the non-U.S. participant complies with applicable certification and disclosure requirements (which generally are met by providing an IRS Form W-8ECI). In addition, a “branch profits tax” may be imposed at a 30% rate (or a lower rate specified under an applicable income tax treaty) on a foreign corporation’s effectively connected earnings and profits for the taxable year, as adjusted for certain items.

Deposit, Withdrawal or Sale of Shares . As described above under “Tax Consequences to U.S. Participants— Deposit, Withdrawal or Sale of Shares ,” a non-U.S. participant generally will not realize gain or loss for U.S. federal income tax purposes upon the deposit of shares to the Plan. Subject to the discussions of backup withholding and foreign account tax compliance below, any gain realized by a non-U.S. participant on the sale or other taxable disposition of any of its shares held in the Plan (including the receipt of cash for fractional shares) generally will not be subject to U.S. federal income tax, unless:

If the first bullet point applies, the non-U.S participant generally will be subject to U.S. federal income tax with respect to such gain in the same manner as U.S. participants, as described above, unless an applicable income tax treaty provides otherwise. In addition, if such non-U.S participant is a corporation, such non-U.S. participant may also be subject to the branch profits tax described above. If the second bullet point applies, the non-U.S participant generally will be subject to U.S. federal income tax at a rate of 30% (or at a reduced rate under an applicable income tax treaty) on the amount by which capital gains from U.S. sources (including gains from the sale or other taxable disposition of its shares held in the Plan) exceed capital losses allocable to U.S. sources.

Information Reporting and Backup Withholding . Distributions with respect to, or the proceeds of the sale or other taxable disposition of, our common stock may be subject to information reporting. Participants that fail to provide certain U.S. federal income tax certifications in the manner required by law may be subject to U.S. federal backup withholding tax. If your dividends are subject to U.S. federal backup withholding tax, the administrator will deduct the appropriate amount of tax required to be withheld, and only the remaining amount will be reinvested in common stock, or paid to you. U.S. participants are generally not subject to U.S. federal backup withholding tax if the U.S. participant supplies a taxpayer identification number, certified under penalties of perjury, as well as certain other information or otherwise establish an exemption from backup withholding. If you are a non-U.S. participant, information reporting may apply to distributions with respect to our common stock. In addition, if you are a non-U.S. participant, you may be required to comply with certification procedures to establish that you are not a U.S. person in order to avoid backup withholding tax on distributions with respect to, and proceeds from the disposition of, our common stock.

Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules can be refunded or credited against your U.S. federal income tax liability, provided that the required information is timely furnished to the Internal Revenue Service. We cannot refund U.S. federal backup withholding tax amounts . If you are subject to such withholding, you should contact your tax advisors or the Internal Revenue Service for information.

15

Table of Contents

In the case of dividend reinvestments by a non-U.S. participant who is subject to U.S. federal income tax withholding on distributions, the amount of tax required to be withheld will be deducted from the amount of reinvested dividends and only the remaining amount will be invested in Plan shares. Non-U.S. participants should consult their own tax advisors regarding the applicability of U.S. federal withholding tax to them and all other tax consequences to them under applicable tax laws and any applicable tax treaties.

We must report annually to the Internal Revenue Service and to each participant the amount of all actual and deemed distributions and the amount of tax withheld from those distributions. The Plan administrator, as required, will report to the participant and to the Internal Revenue Service the proceeds from the sale of any Plan shares and the tax basis of the shares sold.

FATCA . Under the Foreign Account Tax Compliance Act and related IRS guidance concerning foreign account tax compliance rules (“FATCA”) a 30% withholding tax is imposed on dividends payable in respect of our common stock and (for dispositions after December 31, 2018) gross proceeds from the sale of our common stock payable to foreign financial institutions and other non-U.S. persons that fail to comply with information reporting requirements in respect of their direct and indirect U.S. shareholders and/or U.S. accountholders. If withholding is required under these rules, the appropriate amount of tax will be deducted and only the remaining amount will be reinvested or paid. Prospective participants should consult their tax advisors regarding the effects of FATCA on their investment in the Plan.