The term “broker-dealer” shall mean any broker or dealer registered with the Commission under the Exchange Act. “Business Day” shall have the meaning set forth in Rule 13e-4(a)(3) promulgated by the Commission under the Exchange Act, as the same may...

Exhibit 10.1 Oglethorpe Power Corporation (An Electric Membership Corporation) 5.800% Green First Mortgage Bonds, Series 2024A due 2054 _____________________________ Exchange and Registration Rights Agreement June 21, 2024 RBC Capital Markets, LLC As representative of the Purchasers Brookfield Place 000 Xxxxx Xxxxxx, 0xx Xxxxx Xxx Xxxx, XX 00000 Ladies and Gentlemen: Oglethorpe Power Corporation (An Electric Membership Corporation), an electric membership corporation organized under the laws of the State of Georgia (the “Company”), proposes to issue and sell to the Purchasers (as defined herein) upon the terms set forth in the Purchase Agreement (as defined herein) $350,000,000 in aggregate principal amount of its 5.800% Green First Mortgage Bonds, Series 2024A due 2054 (the “Securities”) to be issued pursuant to the Indenture dated as of March 1, 1997 (the “Base Indenture”), made by the Company to U.S. Bank Trust Company, National Association, as trustee (the “Trustee”), as amended and supplemented through and including the Eighty-Ninth Supplemental Indenture thereto, dated as of June 1, 2024 (the Base Indenture, as so amended and supplemented, the “Indenture”). As an inducement to the Purchasers to enter into the Purchase Agreement and in satisfaction of a condition to the obligations of the Purchasers thereunder, the Company agrees with the Purchasers for the benefit of holders (as defined herein) from time to time of the Registrable Securities (as defined herein) as follows: 1. Certain Definitions. For purposes of this Exchange and Registration Rights Agreement (this “Agreement”), the following terms shall have the following respective meanings: “Alternative Registration” shall have the meaning assigned thereto in Section 2(b). “Alternative Registration Statement” shall have the meaning assigned thereto in Section 2(b). “Base Indenture” shall have the meaning assigned thereto in the Preamble. “Base Interest” shall mean the interest that would otherwise accrue on the Securities under the terms thereof and the Indenture, without giving effect to the provisions of this Agreement.

The term “broker-dealer” shall mean any broker or dealer registered with the Commission under the Exchange Act. “Business Day” shall have the meaning set forth in Rule 13e-4(a)(3) promulgated by the Commission under the Exchange Act, as the same may be amended or succeeded from time to time. “Closing Date” shall mean the date on which the Securities are initially issued. “Commission” shall mean the United States Securities and Exchange Commission, or any other federal agency at the time administering the Exchange Act or the Securities Act, whichever is the relevant statute for the particular purpose. “Company” shall have the meaning assigned thereto in the Preamble. “XXXXX System” means the XXXXX filing system of the Commission and the rules and regulations pertaining thereto promulgated by the Commission in Regulation S-T under the Securities Act and the Exchange Act, in each case as the same may be amended or succeeded from time to time (and without regard to format). “Effective Time,” in the case of (i) an Exchange Registration, shall mean the time and date as of which the Commission declares the Exchange Registration Statement effective or as of which the Exchange Registration Statement otherwise becomes effective and, (ii) an Alternative Registration, shall mean the time and date as of which the Commission declares the Alternative Registration Statement effective or as of which the Alternative Registration Statement otherwise becomes effective. “Electing Holder” shall mean any holder of Registrable Securities that has returned a completed and signed Notice and Questionnaire to the Company in accordance with Section 3(c)(ii) or Section 3(c)(iii) and the instructions set forth in the Notice and Questionnaire. “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated by the Commission thereunder, as the same may be amended or succeeded from time to time. “Exchange Offer” shall have the meaning assigned thereto in Section 2(a). “Exchange Registration” shall have the meaning assigned thereto in Section 3(b). “Exchange Registration Statement” shall have the meaning assigned thereto in Section 2(a). “Exchange Securities” shall have the meaning assigned thereto in Section 2(a). The term “holder” shall mean each of the Purchasers and other persons who acquire Securities from time to time (including any successors or assigns), in each case for so long as such person owns any Securities. “Indenture” shall have the meaning assigned thereto in the Preamble.

“Notice and Questionnaire” means a Notice of Registration Statement and Selling Securityholder Questionnaire substantially in the form of Exhibit A hereto. The term “person” shall mean a corporation, limited liability company, cooperative or membership corporation, association, partnership, organization, business, individual, government or political subdivision thereof or governmental agency. “Purchase Agreement” shall mean the Purchase Agreement, dated as of June 18, 2024, between the Purchasers and the Company relating to the Securities. “Purchasers” shall mean the Purchasers named in Schedule I to the Purchase Agreement. “Registrable Securities” shall mean the Securities; provided, however, that a Security shall cease to be a Registrable Security upon the earliest to occur of the following: (i) in the circumstances contemplated by Section 2(a), the Security has been exchanged for an Exchange Security in an Exchange Offer as contemplated in Section 2(a) (provided that any Exchange Security that, pursuant to the last two sentences of Section 2(a), is included in a prospectus for use in connection with resales by broker-dealers shall be deemed to be a Registrable Security with respect to Sections 5, 6 and 9 until resale of such Registrable Security has been effected within the Resale Period); (ii) in the circumstances contemplated by Section 2(b), an Alternative Registration Statement registering such Security under the Securities Act has been declared or becomes effective and such Security has been sold or otherwise transferred by the holder thereof pursuant to and in a manner contemplated by such effective Alternative Registration Statement; (iii) subject to Section 8(b), such Security is actually sold by the holder thereof pursuant to Rule 144, provided that a Security will not cease to be a Registrable Security for purposes of the Exchange Offer by virtue of this clause (iii); or (iv) such Security shall cease to be outstanding. “Registration Default” shall have the meaning assigned thereto in Section 2(c). “Registration Default Period” shall have the meaning assigned thereto in Section 2(c). “Registration Expenses” shall have the meaning assigned thereto in Section 4. “Resale Period” shall have the meaning assigned thereto in Section 2(a). “Restricted Holder” shall mean (i) a holder that is an affiliate of the Company within the meaning of Rule 405, (ii) a holder who acquires Exchange Securities outside the ordinary course of such holder’s business, (iii) a holder who has arrangements or understandings with any person to participate in the Exchange Offer for the purpose of distributing Exchange Securities and (iv) a holder that is a broker-dealer, but only with respect to Exchange Securities received by such broker-dealer pursuant to an Exchange Offer in exchange for Registrable Securities acquired by the broker-dealer directly from the Company. “Rule 144,” “Rule 405”, “Rule 415”, “Rule 424”, “Rule 430B” and “Rule 433” shall mean, in each case, such rule promulgated by the Commission under the Securities Act (or any successor provision), as the same may be amended or succeeded from time to time. “Securities” shall have the meaning assigned thereto in the Preamble.

“Securities Act” shall mean the Securities Act of 1933, as amended, and the rules and regulations promulgated by the Commission thereunder, as the same may be amended or succeeded from time to time. “Special Interest” shall have the meaning assigned thereto in Section 2(c). “Suspension Period” shall have the meaning assigned thereto in Section 2(b). “Trust Indenture Act” shall mean the Trust Indenture Act of 1939, as amended, and the rules and regulations promulgated by the Commission thereunder, as the same may be amended or succeeded from time to time. “Trustee” shall have the meaning assigned thereto in the Preamble. Unless the context otherwise requires, any reference herein to a “Section” or “clause” refers to a Section or clause, as the case may be, of this Agreement, and the words “herein,” “hereof” and “hereunder” and other words of similar import refer to this Agreement as a whole and not to any particular Section or other subdivision. 2. Registration Under the Securities Act. (a) Except as set forth in Section 2(b) below, the Company agrees to file under the Securities Act, no later than 300 days after the Closing Date, a registration statement relating to an offer to exchange (such registration statement, the “Exchange Registration Statement”, and such offer, the “Exchange Offer”) any and all of the Securities for a like aggregate principal amount of debt securities issued by the Company, which debt securities are substantially identical to the Securities (and are entitled to the benefits of the Indenture), except that they have been registered pursuant to an effective registration statement under the Securities Act and do not contain provisions for Special Interest contemplated in Section 2(c) below (such new debt securities hereinafter called “Exchange Securities”). The Company agrees to use commercially reasonable efforts to cause the Exchange Registration Statement to become effective under the Securities Act no later than 390 days after the Closing Date. The Exchange Offer will be registered under the Securities Act on the appropriate form and will comply with all applicable tender offer rules and regulations under the Exchange Act. Unless the Exchange Offer would not be permitted by applicable law or Commission policy, the Company further agrees to use commercially reasonable efforts to (i) commence the Exchange Offer promptly following the Effective Time of such Exchange Registration Statement, (ii) hold the Exchange Offer open for at least 20 Business Days in accordance with Regulation 14E promulgated by the Commission under the Exchange Act and (iii) exchange Exchange Securities for all Registrable Securities that have been properly tendered and not withdrawn promptly following the expiration of the Exchange Offer. The Exchange Offer will be deemed to have been “completed” only (i) if the debt securities received by holders other than Restricted Holders in the Exchange Offer for Registrable Securities are, upon receipt, transferable by each such holder without restriction under the Securities Act and the Exchange Act and without material restrictions under the blue sky or securities laws of a majority of the States of the United States of America and (ii) upon the Company having exchanged, pursuant to the Exchange Offer, Exchange Securities for all Registrable Securities that have been properly tendered and not withdrawn before the expiration of the Exchange Offer, which shall be on a date that is at least 20 and not more than 60 Business Days following the commencement of the Exchange Offer. The Company agrees (x) to include in the Exchange Registration Statement a prospectus for use in any resales by any holder of Exchange Securities that is a broker-dealer and (y) to use

commercially reasonable efforts to keep such Exchange Registration Statement effective for a period (the “Resale Period”) beginning when Exchange Securities are first issued in the Exchange Offer and ending upon the earlier of the expiration of the 180th day after the Exchange Offer has been completed or such time as such broker-dealers no longer own any Registrable Securities. With respect to such Exchange Registration Statement, such holders shall have the benefit of the rights of indemnification and contribution set forth in Subsections 6(a), (c), (d) and (e). (b) If (i) on or prior to the time the Exchange Offer is completed existing law or Commission interpretations are changed such that the debt securities received by holders other than Restricted Holders in the Exchange Offer for Registrable Securities are not or would not be, upon receipt, transferable by each such holder without restriction under the Securities Act, (ii) the Effective Time of the Exchange Registration Statement is not within 390 days following the Closing Date and the Exchange Offer has not been completed within 60 Business Days of such Effective Time or (iii) any holder of Registrable Securities notifies the Company prior to the 20th day following the completion of the Exchange Offer that: (A) it is prohibited by law or Commission policy from participating in the Exchange Offer, (B) it may not resell the Exchange Securities to the public without delivering a prospectus and the prospectus supplement contained in the Exchange Registration Statement is not appropriate or available for such resales or (C) it is a broker-dealer and owns Securities acquired directly from the Company or an affiliate of the Company, then the Company shall, in lieu of (or, in the case of clause (iii), in addition to) conducting the Exchange Offer contemplated by Section 2(a), file under the Securities Act no later than 30 Business Days after the time such obligation to file arises (but no earlier than 300 days after the Closing Date), an alternative registration statement providing for the registration of, and the sale on a continuous or delayed basis by the holders of, all of the Registrable Securities, pursuant to Rule 415 or any similar rule that may be adopted by the Commission (such filing, the “Alternative Registration” and such registration statement, the “Alternative Registration Statement”). The Company agrees to use commercially reasonable efforts to cause the Alternative Registration Statement to become or be declared effective no later than 90 days after such Alternative Registration Statement filing obligation arises (but no earlier than 390 days after the Closing Date). The Company agrees to use commercially reasonable efforts to keep such Alternative Registration Statement continuously effective for a period ending on the earlier of the first anniversary of the Effective Time or such time as there are no longer any Registrable Securities outstanding. No holder shall be entitled to be named as a selling securityholder in the Alternative Registration Statement or to use the prospectus forming a part thereof for resales of Registrable Securities unless such holder is an Electing Holder. The Company agrees, after the Effective Time of the Alternative Registration Statement and promptly upon the request of any holder of Registrable Securities that is not then an Electing Holder, to use commercially reasonable efforts to enable such holder to use the prospectus forming a part thereof for resales of Registrable Securities, including, without limitation, any action necessary to identify such holder as a selling securityholder in the Alternative Registration Statement (whether by post-effective amendment thereto or by filing a prospectus pursuant to Rules 430B and 424(b) under the Securities Act identifying such holder), provided, however, that nothing in this sentence shall relieve any such holder of the obligation to return a completed and signed Notice and Questionnaire to the Company in accordance with Section 3(c)(iii). Notwithstanding anything to the contrary in this Section 2(b), upon notice to the Electing Holders, the Company may suspend the use or the effectiveness of such Alternative Registration Statement, or extend the time period in which it is required to file the Alternative Registration Statement, for up to 30 consecutive days and up to 60 days in the aggregate, in each case in any 12-month period (a “Suspension Period”) if the Company determines that

there is a valid business purpose for suspension of the Alternative Registration Statement; provided that the Company shall promptly notify the Electing Holders when the Alternative Registration Statement may once again be used or is effective. (c) In the event that (i) the Company has not filed the Exchange Registration Statement or the Alternative Registration Statement on or before the date on which such registration statement is required to be filed pursuant to Section 2(a) or Section 2(b), respectively, or (ii) such Exchange Registration Statement or Alternative Registration Statement has not become effective or been declared effective by the Commission on or before the date on which such registration statement is required to become or be declared effective pursuant to Section 2(a) or Section 2(b), respectively, or (iii) the Exchange Offer has not been completed within 60 Business Days after the Effective Time of the Exchange Registration Statement relating to the Exchange Offer (if the Exchange Offer is then required to be made) or (iv) any Exchange Registration Statement or Alternative Registration Statement required by Section 2(a) or Section 2(b) is filed and declared effective but shall thereafter either be withdrawn by the Company or shall become subject to an effective stop order issued pursuant to Section 8(d) of the Securities Act suspending the effectiveness of such registration statement (except as specifically permitted herein, including, with respect to any Alternative Registration Statement, during any applicable Suspension Period in accordance with the last sentence of Section 2(b)) without being succeeded within 30 days from the date such registration statement was suspended by an additional registration statement filed and declared effective (each such event referred to in clauses (i) through (iv), a “Registration Default” and each period during which a Registration Default has occurred and is continuing, a “Registration Default Period”), then, as liquidated damages for such Registration Default, subject to the provisions of Section 9(b), special interest (“Special Interest”), in addition to the Base Interest, shall accrue on all Registrable Securities then outstanding at a per annum rate of 0.25% for the first 90 days of the Registration Default Period and at a per annum rate of 0.50% thereafter for the remaining portion of the Registration Default Period. Special Interest shall accrue and be payable only with respect to a single Registration Default at any given time, notwithstanding the fact that multiple Registration Defaults may exist at such time. Immediately upon the cure of all Registration Defaults, the accrual of Special Interest will cease and the interest rate on the Securities shall revert to the original rate. (d) The Company shall take all actions necessary or advisable to be taken by it to ensure that the transactions contemplated herein are effected as so contemplated. (e) Any reference herein to a registration statement or prospectus as of any time shall be deemed to include any document incorporated, or deemed to be incorporated, therein by reference as of such time; and any reference herein to any post-effective amendment to a registration statement or to any prospectus supplement as of any time shall be deemed to include any document incorporated, or deemed to be incorporated, therein by reference as of such time. (f) The parties hereto agree that the liquidated damages in the form of Special Interest provided for in Section 2(c) constitute a reasonable estimate of and are intended to constitute the sole damages payable under this Agreement that will be suffered by the holders of Securities, and the sole remedy available to the holders, by reason of the failure of (i) the Exchange Offer to be completed, (ii) the Alternative Registration Statement, if required hereby, to be declared effective, or (iii) the Alternative Registration Statement to remain effective (and the prospectus contained therein to remain usable), in each case to the extent required by this Agreement.

supplement or post-effective amendment does not conform in all material respects to the applicable requirements of the Securities Act or the Trust Indenture Act or contains an untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing; (iv) in the event that the Company would be required, pursuant to Section 3(b)(iii)(G), to notify any broker-dealers holding Exchange Securities (except as otherwise permitted during any Suspension Period), promptly prepare and furnish to each such holder a reasonable number of copies of a prospectus supplemented or amended so that, as thereafter delivered to purchasers of such Exchange Securities during the Resale Period, such prospectus shall conform in all material respects to the applicable requirements of the Securities Act and the Trust Indenture Act and shall not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing; (v) use commercially reasonable efforts to obtain the withdrawal of any order suspending the effectiveness of such Exchange Registration Statement or any post-effective amendment thereto at the earliest practicable date; (vi) use commercially reasonable efforts to (A) register or qualify the Exchange Securities under the securities laws or blue sky laws of such jurisdictions as are contemplated by Section 2(a) no later than the commencement of the Exchange Offer, to the extent required by such laws, (B) keep such registrations or qualifications in effect and comply with such laws so as to permit the continuance of offers, sales and dealings therein in such jurisdictions until the expiration of the Resale Period, (C) take any and all other actions as may be reasonably necessary or advisable to enable each broker-dealer holding Exchange Securities to consummate the disposition thereof in such jurisdictions and (D) obtain the consent or approval of each governmental agency or authority, whether federal, state or local, which may be required to effect the Exchange Registration, the Exchange Offer and the offering and sale of Exchange Securities by broker-dealers during the Resale Period; provided, however, that the Company shall not be required for any such purpose to (1) qualify as a foreign corporation in any jurisdiction wherein it would not otherwise be required to qualify but for the requirements of this Section 3(b)(vi), (2) consent to general service of process in any such jurisdiction or become subject to taxation in any such jurisdiction or (3) make any changes to its certificate of incorporation or by-laws or other governing documents or any agreement between it and its members; (vii) obtain a CUSIP number for all Exchange Securities, not later than the applicable Effective Time; and (viii) comply with all applicable rules and regulations of the Commission, and make generally available to its securityholders no later than eighteen months after the Effective Time of such Exchange Registration Statement, an “earning statement” of the Company and its subsidiaries complying with Section 11(a) of the Securities Act (including, at the option of the Company, Rule 158 thereunder). (c) In connection with the Company’s obligations with respect to the Alternative Registration, if applicable, the Company shall:

(i) prepare and file with the Commission, within the time periods specified in Section 2(b), an Alternative Registration Statement on any form which may be utilized by the Company and which shall register all of the Registrable Securities for resale by the holders thereof in accordance with such method or methods of disposition as may be specified by the holders of Registrable Securities as, from time to time, may be Electing Holders and use commercially reasonable efforts to cause such Alternative Registration Statement to become effective within the time periods specified in Section 2(b); (ii) mail the Notice and Questionnaire to the holders of Registrable Securities not less than 30 days prior to the anticipated Effective Time of the Alternative Registration Statement; provided that no holder shall be entitled to be named as a selling securityholder in the Alternative Registration Statement, and no holder shall be entitled to use the prospectus forming a part thereof for resales of Registrable Securities at any time, unless and until such holder has returned a completed and signed Notice and Questionnaire to the Company; (iii) after the Effective Time of the Alternative Registration Statement, upon the request of any holder of Registrable Securities that is not then an Electing Holder, promptly send a Notice and Questionnaire to such holder; provided that the Company shall not be required to take any action to name such holder as a selling securityholder in the Alternative Registration Statement or to enable such holder to use the prospectus forming a part thereof for resales of Registrable Securities until such holder has returned a completed and signed Notice and Questionnaire to the Company; (iv) as soon as practicable prepare and file with the Commission such amendments and supplements to such Alternative Registration Statement and the prospectus included therein as may be necessary to effect and maintain the effectiveness of such Alternative Registration Statement for the period specified in Section 2(b) and as may be required by the applicable rules and regulations of the Commission and the instructions applicable to the form of such Alternative Registration Statement, and furnish to the Electing Holders copies of any such supplement or amendment simultaneously with or prior to its being used or filed with the Commission to the extent such documents are not publicly available on the Commission’s XXXXX System; (v) comply with the provisions of the Securities Act with respect to the disposition of all of the Registrable Securities covered by such Alternative Registration Statement in accordance with the intended methods of disposition by the Electing Holders provided for in such Alternative Registration Statement; (vi) provide the Electing Holders and not more than one counsel for all the Electing Holders the opportunity to participate in the preparation of such Alternative Registration Statement, each prospectus included therein or filed with the Commission and each amendment or supplement thereto; (vii) for a reasonable period prior to the filing of such Alternative Registration Statement, and throughout the period specified in Section 2(b), make available at reasonable times at the Company’s principal place of business or such other reasonable place for inspection by the persons referred to in Section 3(c)(vi) who shall certify to the Company that they have a current intention to sell the Registrable Securities pursuant to the Alternative Registration such financial and other information and books and records of the Company, and cause the officers, employees, counsel and independent certified

public accountants of the Company to respond to such inquiries, as shall be reasonably necessary (and in the case of counsel, not violate an attorney-client privilege, in such counsel’s reasonable belief), in the judgment of the respective counsel referred to in Section 3(c)(vi), to conduct a reasonable investigation within the meaning of Section 11 of the Securities Act; provided, however, that the foregoing inspection and information gathering on behalf of the Electing Holders shall be conducted by one counsel designated by the holders of at least a majority in aggregate principal amount of the Registrable Securities held by the Electing Holders at the time outstanding; provided, further, that each such party shall be required to maintain in confidence and not to disclose to any other person any information or records reasonably designated by the Company as being confidential, until such time as (A) such information becomes a matter of public record (whether by virtue of its inclusion in such Alternative Registration Statement or otherwise), or (B) such person shall be required so to disclose such information pursuant to a subpoena or order of any court or other governmental authority having jurisdiction over the matter (subject to the requirements of such order, and only after such person shall have given the Company prompt prior written notice of such requirement so that the Company may, at its own expense, undertake to prevent disclosure of the information deemed confidential), or (C) such information is required to be set forth in such Alternative Registration Statement or the prospectus included therein or in an amendment to such Alternative Registration Statement or an amendment or supplement to such prospectus in order that Alternative Registration Statement, prospectus, amendment or supplement, as the case may be, complies with applicable requirements of the federal securities laws and the rules and regulations of the Commission and does not contain an untrue statement of a material fact or omit to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing; (viii) promptly notify each of the Electing Holders and confirm such advice in writing, (A) when such Alternative Registration Statement or the prospectus included therein or any prospectus amendment or supplement or post-effective amendment has been filed, and, with respect to such Alternative Registration Statement or any post-effective amendment, when the same has become effective, (B) of any comments by the Commission and by the blue sky or securities commissioner or regulator of any state with respect thereto or any request by the Commission for amendments or supplements to such Alternative Registration Statement or prospectus or for additional information, (C) of the issuance by the Commission of any stop order suspending the effectiveness of such Alternative Registration Statement or the initiation or threatening of any proceedings for that purpose, (D) if at any time the representations and warranties of the Company set forth in Section 5 cease to be true and correct in all material respects, (E) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Registrable Securities for sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose, (F) the occurrence of any event that causes the Company to become an “ineligible issuer” as defined in Rule 405, or (G) if at any time when a prospectus is required to be delivered under the Securities Act, that such Alternative Registration Statement, prospectus, prospectus amendment or supplement or post-effective amendment does not conform in all material respects to the applicable requirements of the Securities Act and the Trust Indenture Act or contains an untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing;

(ix) use commercially reasonable efforts to obtain the withdrawal of any order suspending the effectiveness of such Alternative Registration Statement or any post-effective amendment thereto at the earliest practicable date; (x) if requested by any Electing Holder, promptly incorporate in a prospectus supplement or post-effective amendment such information as is required by the applicable rules and regulations of the Commission and as such Electing Holder, based on the advice of counsel referred to in Section 3(c)(vi), specifies should be included therein relating to the terms of the sale of such Registrable Securities, including information with respect to the principal amount of Registrable Securities being sold by such Electing Holder, the name and description of such Electing Holder, the offering price of such Registrable Securities and any discount, commission or other compensation payable in respect thereof and with respect to any other terms of the offering of the Registrable Securities to be sold by such Electing Holder; and make all required filings of such prospectus supplement or post-effective amendment promptly after notification of the matters to be incorporated in such prospectus supplement or post-effective amendment; (xi) furnish to each Electing Holder and the counsel referred to in Section 3(c)(vi) an executed copy (or a conformed copy) of such Alternative Registration Statement, each such amendment and supplement thereto (in each case including all exhibits thereto (in the case of an Electing Holder of Registrable Securities, upon request) and documents incorporated by reference therein) and such number of copies of such Alternative Registration Statement (excluding exhibits thereto and documents incorporated by reference therein unless specifically so requested by such Electing Holder) and of the prospectus included in such Alternative Registration Statement (including each preliminary prospectus and any summary prospectus), in conformity in all material respects with the applicable requirements of the Securities Act and the Trust Indenture Act to the extent such documents are not available through the Commission’s XXXXX System, and such other documents, as such Electing Holder may reasonably request in order to facilitate the offering and disposition of the Registrable Securities owned by such Electing Holder and to permit such Electing Holder to satisfy the prospectus delivery requirements of the Securities Act; and subject to Section 3(d), the Company hereby consents to the use of such prospectus (including such preliminary and summary prospectus) and any amendment or supplement thereto by each such Electing Holder (subject to any applicable Suspension Period), in each case in the form most recently provided to such person by the Company, in connection with the offering and sale of the Registrable Securities covered by the prospectus (including such preliminary and summary prospectus) or any supplement or amendment thereto; (xii) use commercially reasonable efforts to (A) register or qualify the Registrable Securities to be included in such Alternative Registration Statement under such securities laws or blue sky laws of such jurisdictions as any Electing Holder shall reasonably request, (B) keep such registrations or qualifications in effect and comply with such laws so as to permit the continuance of offers, sales and dealings therein in such jurisdictions during the period the Alternative Registration Statement is required to remain effective under Section 2(b) and for so long as may be necessary to enable any such Electing Holder to complete its distribution of Registrable Securities pursuant to such Alternative Registration Statement, (C) take any and all other actions as may be reasonably necessary or advisable to enable each such Electing Holder to consummate the disposition in such jurisdictions of such Registrable Securities and (D) obtain the consent or approval of each governmental agency or authority, whether federal, state or local, which may be required

to effect the Alternative Registration or the offering or sale in connection therewith or to enable the selling holder or holders to offer, or to consummate the disposition of, their Registrable Securities; provided, however, that the Company shall not be required for any such purpose to (1) qualify as a foreign corporation in any jurisdiction wherein it would not otherwise be required to qualify but for the requirements of this Section 3(c)(xii), (2) consent to general service of process in any such jurisdiction or become subject to taxation in any such jurisdiction or (3) make any changes to its certificate of incorporation or by-laws or other governing documents or any agreement between it and its members; (xiii) unless any Registrable Securities shall be in book-entry only form, cooperate with the Electing Holders to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be sold, which certificates, if so required by any securities exchange upon which any Registrable Securities are listed, if applicable, shall be printed, penned, lithographed, engraved or otherwise produced by any combination of such methods, on steel engraved borders, and which certificates shall not bear any restrictive legends; (xiv) obtain a CUSIP number for all Securities that have been registered under the Securities Act, not later than the applicable Effective Time; (xv) notify in writing each holder of Registrable Securities of any proposal by the Company to amend or waive any provision of this Agreement pursuant to Section 9(h) and of any amendment or waiver effected pursuant thereto, each of which notices shall contain the text of the amendment or waiver proposed or effected, as the case may be; and (xvi) comply with all applicable rules and regulations of the Commission, and make generally available to its securityholders no later than eighteen months after the Effective Time of such Alternative Registration Statement an “earning statement” of the Company and its subsidiaries complying with Section 11(a) of the Securities Act (including, at the option of the Company, Rule 158 thereunder). (d) In the event that the Company would be required, pursuant to Section 3(c)(viii)(G), to notify the Electing Holders, the Company shall promptly prepare and furnish to each of the Electing Holders a reasonable number of copies of a prospectus supplemented or amended so that, as thereafter delivered to purchasers of Registrable Securities, such prospectus shall conform in all material respects to the applicable requirements of the Securities Act and the Trust Indenture Act and shall not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing. Each Electing Holder agrees that upon receipt of any notice from the Company pursuant to Section 3(c)(viii)(G), such Electing Holder shall forthwith discontinue the disposition of Registrable Securities pursuant to the Alternative Registration Statement applicable to such Registrable Securities until such Electing Holder shall have received copies of such amended or supplemented prospectus, and if so directed by the Company, such Electing Holder shall deliver to the Company (at the Company’s expense) all copies, other than permanent file copies, of the prospectus covering such Registrable Securities in such Electing Xxxxxx’s possession at the time of receipt of such notice. (e) In the event of an Alternative Registration, in addition to the information required to be provided by each Electing Holder in its Notice and Questionnaire, the Company may require such Electing Holder to furnish to the Company such additional information regarding such

Electing Holder and such Electing Xxxxxx’s intended method of distribution of Registrable Securities as may be required in order to comply with the Securities Act. Each such Electing Holder agrees to notify the Company as promptly as practicable of any inaccuracy or change in information previously furnished by such Electing Holder to the Company or of the occurrence of any event in either case as a result of which any prospectus relating to such Alternative Registration contains or would contain an untrue statement of a material fact regarding such Electing Holder or such Electing Holder’s intended method of disposition of such Registrable Securities or omits to state any material fact regarding such Electing Holder or such Electing Holder’s intended method of disposition of such Registrable Securities required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing, and promptly to furnish to the Company any additional information required to correct and update any previously furnished information or required so that such prospectus shall not contain, with respect to such Electing Holder or the disposition of such Registrable Securities, an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing. (f) Until the expiration of two years after the Closing Date, the Company will not, and will not permit any of its “affiliates” (as defined in Rule 144) to, resell any of the Securities that have been reacquired by any of them except pursuant to an effective registration statement, or a valid exemption from the registration requirements, under the Securities Act. (g) As a condition to its participation in the Exchange Offer, each holder of Registrable Securities shall furnish, upon the request of the Company, a written representation to the Company (which may be contained in the letter of transmittal or “agent’s message” transmitted via The Depository Trust Company’s Automated Tender Offer Procedures, in either case contemplated by the Exchange Registration Statement) to the effect that (A) it is not an “affiliate” of the Company, as defined in Rule 405 of the Securities Act, or if it is such an “affiliate”, it will comply with the registration and prospectus delivery requirements of the Securities Act to the extent applicable, (B) it is not engaged in and does not intend to engage in, and has no arrangement or understanding with any person to participate in, a distribution of the Exchange Securities to be issued in the Exchange Offer, (C) it is acquiring the Exchange Securities in its ordinary course of business, (D) if it is a broker-dealer that holds Securities that were acquired for its own account as a result of market-making activities or other trading activities (other than Securities acquired directly from the Company or any of its affiliates), it will deliver a prospectus meeting the requirements of the Securities Act in connection with any resales of the Exchange Securities received by it in the Exchange Offer, (E) if it is a broker-dealer, that it did not purchase the Securities to be exchanged in the Exchange Offer from the Company or any of its affiliates, and (F) it is not acting on behalf of any person who could not truthfully and completely make the representations contained in the foregoing subclauses (A) through (E). 4. Registration Expenses. The Company agrees to bear and to pay or cause to be paid promptly all expenses incident to the Company’s performance of or compliance with this Agreement, including (a) all Commission and any FINRA registration, filing and review fees and expenses including reasonable fees and disbursements of one counsel for the Electing Holders in connection with such registration, filing and review, (b) all fees and expenses in connection with the qualification of the Registrable Securities, the Securities and the Exchange Securities, as applicable, for offering and sale under the State securities and blue sky laws referred to in Section 3(c)(xii) and

determination of their eligibility for investment under the laws of such jurisdictions as the Electing Holders may designate, including any reasonable fees and disbursements of Xxxxxx, Xxxxxxxxxx & Xxxxxxxxx LLP, counsel for the Electing Holders in connection with such qualification and determination, (c) all expenses relating to the preparation, printing, production, distribution and reproduction of each registration statement required to be filed hereunder, each prospectus included therein or prepared for distribution pursuant hereto, each amendment or supplement to the foregoing, the expenses of preparing the Securities or Exchange Securities, as applicable, for delivery and the expenses of printing or producing any selling agreements and blue sky or legal investment memoranda and all other documents in connection with the offering, sale or delivery of Securities or Exchange Securities, as applicable, to be disposed of (including certificates representing the Securities or Exchange Securities, as applicable), (d) messenger, telephone and delivery expenses relating to the offering, sale or delivery of Securities or Exchange Securities, as applicable, and the preparation of documents referred in clause (c) above, (e) fees and expenses of the Trustee under the Indenture, any agent of the Trustee and any counsel for the Trustee and of any collateral agent or custodian, (f) internal expenses (including all salaries and expenses of the Company’s officers and employees performing legal or accounting duties), (g) reasonable fees, disbursements and expenses of counsel and independent certified public accountants of the Company, (h) reasonable fees, disbursements and expenses of Xxxxxx, Xxxxxxxxxx & Xxxxxxxxx LLP, counsel for the Electing Holders retained in connection with an Alternative Registration, (i) any fees charged by securities rating services for rating the Registrable Securities , the Securities or the Exchange Securities, as applicable, and (j) fees, expenses and disbursements of any other persons, including special experts, retained by the Company in connection with such registration (collectively, the “Registration Expenses”). To the extent that any Registration Expenses are incurred, assumed or paid by any holder of Registrable Securities, Securities or Exchange Securities, as applicable, the Company shall reimburse such person for the full amount of the Registration Expenses so incurred, assumed or paid promptly after receipt of a request therefor. Notwithstanding the foregoing, the holders of the Registrable Securities being registered shall pay all agency fees and commissions and underwriting discounts and commissions, if any, and transfer taxes, if any, attributable to the sale of such Registrable Securities , Securities and Exchange Securities, as applicable, and the fees and disbursements of any counsel or other advisors or experts retained by such holders (severally or jointly), other than the counsel and experts specifically referred to above. 5. Representations and Warranties. The Company represents and warrants to, and agrees with, each Purchaser and each of the holders from time to time of Registrable Securities that: (a) Each registration statement covering Registrable Securities, Securities or Exchange Securities, as applicable, and each prospectus (including any preliminary or summary prospectus) contained therein or furnished pursuant to Section 3(b) or Section 3(c) and any further amendments or supplements to any such registration statement or prospectus, when it becomes effective or is filed with the Commission, as the case may be, will conform in all material respects to the requirements of the Securities Act and the Trust Indenture Act and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; and at all times subsequent to the Effective Time when a prospectus would be required to be delivered under the Securities Act, other than (A) from (i) such time as a notice has been given to holders of Registrable Securities pursuant to Section 3(b)(iii)(G) or Section 3(c)(viii)(G) until (ii) such time as the Company furnishes an amended or supplemented prospectus pursuant to Section 3(b)(iv) or Section 3(d) or (B) during any applicable Suspension Period, each such

registration statement, and each prospectus (including any summary prospectus) contained therein or furnished pursuant to Section 3(b) or Section 3(c), as then amended or supplemented, will conform in all material respects to the requirements of the Securities Act and the Trust Indenture Act and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading in the light of the circumstances then existing; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by a holder of Registrable Securities expressly for use therein. (b) Any documents incorporated by reference in any prospectus referred to in Section 5(a), when they become or became effective or are or were filed with the Commission, as the case may be, will conform or conformed in all material respects to the requirements of the Securities Act or the Exchange Act, as applicable, and none of such documents will contain or contained an untrue statement of a material fact or will omit or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by a holder of Registrable Securities expressly for use therein. (c) The compliance by the Company with all of the provisions of this Agreement and the consummation of the transactions herein contemplated will not (i) conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which the Company is a party or by which the Company is bound or to which any of the property or assets of the Company is subject, (ii) result in any violation of the provisions of the certificate of incorporation, as amended, or the by-laws or other governing documents, as applicable, of the Company or (iii) result in any violation of any statute or any order, rule or regulation of any court or governmental authority having jurisdiction over the Company or any of its properties, except in the case of (i) and (ii) above as would not have a material adverse effect on the business, financial condition or results of operations of the Company; and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental authority is required for the consummation by the Company of the transactions contemplated by this Agreement, except (x) the registration under the Securities Act of the Registrable Securities , the Securities and the Exchange Securities, as applicable, and qualification of the Indenture under the Trust Indenture Act, (y) such consents, approvals, authorizations, registrations or qualifications as may be required under state securities or blue sky laws in connection with the offering and distribution of the Registrable Securities , the Securities and the Exchange Securities, as applicable, and (z) such consents, approvals, authorizations, registrations or qualifications that have been obtained and are in full force and effect as of the date hereof. (d) This Agreement has been duly authorized, executed and delivered by the Company. 6. Indemnification and Contribution. (a) Indemnification by the Company. The Company will indemnify and hold harmless each of the holders of Registrable Securities included in an Exchange Registration Statement and, each of the Electing Holders as holders of Registrable Securities included in an Alternative Registration Statement against any losses, claims, damages or liabilities, joint or several, to which such holder or, such Electing Holder may become subject under the Securities Act or

otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in any Exchange Registration Statement or, any Alternative Registration Statement, as the case may be, under which such Registrable Securities, Securities or Exchange Securities were registered under the Securities Act, or any preliminary, final or summary prospectus (including, without limitation, any “issuer free writing prospectus” as defined in Rule 433) contained therein or furnished by the Company to any such holder or, any such Electing Holder, or any amendment or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and will reimburse each such holder and, each such Electing Holder for any and all legal or other expenses reasonably incurred by them in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that the Company shall not be liable to any such person in any such case to the extent that any such loss, claim, damage or liability (or action in respect thereof) arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in such registration statement, or preliminary, final or summary prospectus (including, without limitation, any “issuer free writing prospectus” as defined in Rule 433), or amendment or supplement thereto, in reliance upon and in conformity with written information furnished to the Company by such person expressly for use therein. (b) Indemnification by the Electing Holders. The Company may require, as a condition to including any Registrable Securities in any Alternative Registration Statement filed pursuant to Section 2(b), that the Company shall have received an undertaking reasonably satisfactory to it from each Electing Holder of Registrable Securities included in such Alternative Registration Statement, severally and not jointly, to (i) indemnify and hold harmless the Company and all other Electing Holders of Registrable Securities included in such Alternative Registration Statement, against any losses, claims, damages or liabilities to which the Company or such other Electing Holders may become subject, under the Securities Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in such registration statement, or any preliminary, final or summary prospectus (including, without limitation, any “issuer free writing prospectus” as defined in Rule 433) contained therein or furnished by the Company to any Electing Holder, or any amendment or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in reliance upon and in conformity with written information furnished to the Company by such Electing Holder expressly for use therein, and (ii) reimburse the Company for any legal or other expenses reasonably incurred by the Company in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that no such Electing Holder shall be required to undertake liability to any person under this Section 6(b) for any amounts in excess of the dollar amount of the proceeds to be received by such Electing Holder from the sale of such Electing Holder’s Registrable Securities pursuant to such registration. (c) Notices of Claims, Etc. Promptly after receipt by an indemnified party under subsection (a) or (b) above of written notice of the commencement of any action, such indemnified party shall, if a claim in respect thereof is to be made against an indemnifying party pursuant to the indemnification provisions of or contemplated by this Section 6, notify

such indemnifying party in writing of the commencement of such action; but the omission so to notify the indemnifying party shall not relieve it from any liability which it may have to any indemnified party otherwise than under the indemnification provisions of or contemplated by Section 6(a) or Section 6(b), except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such omission. In case any such action shall be brought against any indemnified party and it shall notify an indemnifying party of the commencement thereof, such indemnifying party shall be entitled to participate therein and, to the extent that it shall wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to such indemnified party (who shall not, except with the consent of the indemnified party, be counsel to the indemnifying party), and, after notice from the indemnifying party to such indemnified party of its election so to assume the defense thereof, such indemnifying party shall not be liable to such indemnified party for any legal expenses of other counsel or any other expenses, in each case subsequently incurred by such indemnified party, in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the prior written consent of the indemnified party, effect the settlement or compromise of, or consent to the entry of any judgment with respect to, any pending or threatened action or claim in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified party is an actual or potential party to such action or claim) unless such settlement, compromise or judgment (i) includes an unconditional release of the indemnified party from all liability arising out of such action or claim and (ii) does not include a statement as to, or an admission of, fault, culpability or a failure to act by or on behalf of any indemnified party. (d) Contribution. If for any reason the indemnification provisions contemplated by Section 6(a) or Section 6(b) are unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, claims, damages or liabilities (or actions in respect thereof) referred to therein, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect the relative fault of the indemnifying party and the indemnified party in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities (or actions in respect thereof), as well as any other relevant equitable considerations. The relative fault of such indemnifying party and indemnified party shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by such indemnifying party or by such indemnified party, and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The parties hereto agree that it would not be just and equitable if contributions pursuant to this Section 6(d) were determined by pro rata allocation (even if the holders were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in this Section 6(d). The amount paid or payable by an indemnified party as a result of the losses, claims, damages or liabilities (or actions in respect thereof) referred to above shall be deemed to include any legal or other fees or expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section 6(d), no Electing Holder shall be required to contribute any amount in excess of the amount by which the dollar amount of the proceeds received by such holder from the sale of any Registrable Securities exceeds the amount of any damages which such holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled

force and effect regardless of any investigation (or statement as to the results thereof) made by or on behalf of any holder of Registrable Securities, any director, officer or partner of such holder, or any controlling person of any of the foregoing, and shall survive delivery of and payment for the Registrable Securities pursuant to the Purchase Agreement, the transfer and registration of Registrable Securities by such holder and the consummation of an Exchange Offer. (f) Governing Law. This Agreement shall be construed and interpreted in accordance with the laws of the State of New York without regard to conflict of law principles thereunder. Any dispute relating hereto may be heard in the U.S. District Court for the Southern District of New York or, if that court does not have subject matter jurisdiction, in any state court located in the Borough of Manhattan, and the Parties agree to jurisdiction and venue therein. (g) Headings. The descriptive headings of the several Sections and paragraphs of this Agreement are inserted for convenience only, do not constitute a part of this Agreement and shall not affect in any way the meaning or interpretation of this Agreement. (h) Entire Agreement; Amendments. This Agreement and the other writings referred to herein (including the Indenture and the form of Securities) or delivered pursuant hereto which form a part hereof contain the entire understanding of the parties with respect to its subject matter. This Agreement supersedes all prior agreements and understandings between the parties with respect to its subject matter. This Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively) only by a written instrument duly executed by the Company and the holders of at least a majority in aggregate principal amount of the Registrable Securities at the time outstanding. Each holder of any Registrable Securities at the time or thereafter outstanding shall be bound by any amendment or waiver effected pursuant to this Section 9(h), whether or not any notice, writing or marking indicating such amendment or waiver appears on such Registrable Securities or is delivered to such holder. (i) Counterparts. This Agreement may be executed by the parties in counterparts, each of which shall be deemed to be an original, but all such respective counterparts shall together constitute one and the same instrument. The words “execution,” “signed,” “signature,” “delivery” and words of like import in or relating to this Agreement or any document to be signed in connection with this Agreement shall be deemed to include electronic signatures, deliveries or the keeping of records in electronic form, each of which shall be of the same legal effect, validity or enforceability as a manually executed signature, physical delivery thereof or the use of a paper-based recordkeeping system, as the case may be, and the parties hereto consent to conduct the transactions contemplated hereunder by electronic means. (j) Severability. If any provision of this Agreement, or the application thereof in any circumstance, is held to be invalid, illegal or unenforceable in any respect for any reason, the validity, legality and enforceability of such provision in every other respect and of the remaining provisions contained in this Agreement shall not be affected or impaired thereby. (Remainder of Page Intentionally Left Blank)

[Signature Page to Exchange and Registration Rights Agreement] If the foregoing is in accordance with your understanding, please sign and return to us counterparts hereof, and upon the acceptance hereof by you, on behalf of each of the Purchasers, this letter and such acceptance hereof shall constitute a binding agreement among each of the Purchasers and the Company. It is understood that your acceptance of this letter on behalf of each of the Purchasers and authorization to act hereunder is pursuant to the authority set forth in an Agreement among Purchasers, but without warranty on your part as to the authority of the signers thereto. Very truly yours, OGLETHORPE POWER CORPORATION (An Electric Membership Corporation) By: _________________________________ Name: Xxxxxxxxx X. Xxxxxxx Title: Executive Vice President and Chief Financial Officer

[Signature Page to Exchange and Registration Rights Agreement] Accepted as of the date hereof: RBC Capital Markets, LLC on behalf of each of the Purchasers By: _________________________________ Authorized Representative

Exchange and Registration Rights Agreement A-1 Exhibit A Oglethorpe Power Corporation (An Electric Membership Corporation) INSTRUCTION TO DTC PARTICIPANTS (Date of Mailing) URGENT - IMMEDIATE ATTENTION REQUESTED DEADLINE FOR RESPONSE: [DATE] * The Depository Trust Company (“DTC”) has identified you as a DTC Participant through which beneficial interests in the Oglethorpe Power Corporation (An Electric Membership Corporation) (the “Company”) 5.800% Green First Mortgage Bonds, Series 2024A due 2054 (the “Securities”) are held. The Company is in the process of registering the Securities under the Securities Act of 1933 for resale by the beneficial owners thereof. In order to have their Securities included in the registration statement, beneficial owners must complete and return the enclosed Notice of Registration Statement and Selling Securityholder Questionnaire. It is important that beneficial owners of the Securities receive a copy of the enclosed materials as soon as possible as their rights to have the Securities included in the registration statement depend upon their returning the Notice and Questionnaire by [Deadline For Response]. Please forward a copy of the enclosed documents to each beneficial owner that holds interests in the Securities through you. If you require more copies of the enclosed materials or have any questions pertaining to this matter, please contact Oglethorpe Power Corporation (An Electric Membership Corporation), 0000 Xxxx Xxxxxxxx Xxxxx, Xxxxxx, XX 00000, [Attn: ________ at telephone number: ________]. * Not less than 28 calendar days from date of mailing.

Exchange and Registration Rights Agreement A-2 Oglethorpe Power Corporation (An Electric Membership Corporation) Notice of Registration Statement and Selling Securityholder Questionnaire (Date) Reference is hereby made to the Exchange and Registration Rights Agreement (the “Exchange and Registration Rights Agreement”) between Oglethorpe Power Corporation (An Electric Membership Corporation) (the “Company”) and the Purchasers named therein. Pursuant to the Exchange and Registration Rights Agreement, the Company has filed or will file with the United States Securities and Exchange Commission (the “Commission”) a registration statement on Form [__] (the “Alternative Registration Statement”) for the registration and resale under Rule 415 of the Securities Act of 1933, as amended (the “Securities Act”), of the Company’s 5.800% Green First Mortgage Bonds, Series 2024A due 2054 (the “Securities”). A copy of the Exchange and Registration Rights Agreement has been filed as an exhibit to the Alternative Registration Statement and can be obtained from the Commission’s website at xxx.xxx.xxx. All capitalized terms not otherwise defined herein shall have the meanings ascribed thereto in the Exchange and Registration Rights Agreement. Each beneficial owner of Registrable Securities (as defined below) is entitled to have the Registrable Securities beneficially owned by it included in the Alternative Registration Statement. In order to have Registrable Securities included in the Alternative Registration Statement, this Notice of Registration Statement and Selling Securityholder Questionnaire (“Notice and Questionnaire”) must be completed, executed and delivered to the Company’s counsel at the address set forth herein for receipt ON OR BEFORE [Deadline for Response]. Beneficial owners of Registrable Securities who do not properly complete, execute and return this Notice and Questionnaire by such date (i) will not be named as selling securityholders in the Alternative Registration Statement and (ii) may not use the Prospectus forming a part thereof for resales of Registrable Securities. Certain legal consequences arise from being named as a selling securityholder in the Alternative Registration Statement and related Prospectus. Accordingly, holders and beneficial owners of Registrable Securities are advised to consult their own securities law counsel regarding the consequences of being named or not being named as a selling securityholder in the Alternative Registration Statement and related Prospectus. The term “Registrable Securities” is defined in the Exchange and Registration Rights Agreement.

Exchange and Registration Rights Agreement A-3 ELECTION The undersigned holder (the “Selling Securityholder”) of Registrable Securities hereby elects to include in the Alternative Registration Statement the Registrable Securities beneficially owned by it and listed below in Item (3). The undersigned, by signing and returning this Notice and Questionnaire, agrees to be bound with respect to such Registrable Securities by the terms and conditions of this Notice and Questionnaire and the Exchange and Registration Rights Agreement, including, without limitation, Section 6 of the Exchange and Registration Rights Agreement, as if the undersigned Selling Securityholder were an original party thereto. Pursuant to the Exchange and Registration Rights Agreement, the undersigned has agreed to indemnify and hold harmless the Company, its officers who sign any Alternative Registration Statement, and each person, if any, who controls the Company within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act of 1934, as amended (the “Exchange Act”), against certain loses arising out of an untrue statement, or the alleged untrue statement, of a material fact in the Alternative Registration Statement or the related prospectus or the omission, or alleged omission, to state a material fact required to be stated in such Alternative Registration Statement or the related prospectus, but only to the extent such untrue statement or omission, or alleged untrue statement or omission, was made in reliance on and in conformity with the information provided in this Notice and Questionnaire. Upon any sale of Registrable Securities pursuant to the Alternative Registration Statement, the Selling Securityholder will be required to deliver to the Company and Trustee the Notice of Transfer set forth in Appendix A to the Prospectus and as Exhibit B to the Exchange and Registration Rights Agreement. The Selling Securityholder hereby provides the following information to the Company and represents and warrants that such information is accurate and complete:

Exchange and Registration Rights Agreement A-4 QUESTIONNAIRE (1) (a) Full legal name of Selling Securityholder: (b) Full legal name of registered holder (if not the same as in (a) above) of Registrable Securities listed in Item (3) below: (c) Full legal name of DTC Participant (if applicable and if not the same as (b) above) through which Registrable Securities listed in Item (3) below are held: (2) Address for notices to Selling Securityholder: Telephone: Fax: Contact Person: E-mail for Contact Person: (3) Beneficial Ownership of Securities: Except as set forth below in this Item (3), the undersigned does not beneficially own any Securities. (a) Principal amount of Registrable Securities beneficially owned: CUSIP No(s). of such Registrable Securities: (b) Principal amount of Securities other than Registrable Securities beneficially owned: CUSIP No(s). of such other Securities: (c) Principal amount of Registrable Securities that the undersigned wishes to be included in the Alternative Registration Statement: CUSIP No(s). of such Registrable Securities to be included in the Alternative Registration Statement:

Exchange and Registration Rights Agreement A-5 (4) Beneficial Ownership of Other Securities of the Company: Except as set forth below in this Item (4), the undersigned Selling Securityholder is not the beneficial or registered owner of any other securities of the Company, other than the Securities listed above in Item (3). State any exceptions here: (5) Individuals who exercise dispositive powers with respect to the Securities: If the Selling Securityholder is not an entity that is required to file reports with the Commission pursuant to Section 13 or 15(d) of the Exchange Act (a “Reporting Company”), then the Selling Securityholder must disclose the name of the natural person(s) who exercise sole or shared dispositive powers with respect to the Securities. Selling Securityholders should disclose the beneficial holders, not nominee holders or other such others of record. In addition, the Commission has provided guidance that Rule 13d-3 of the Securities Exchange Act of 1934 should be used by analogy when determining the person or persons sharing voting and/or dispositive powers with respect to the Securities. (a) Is the holder a Reporting Company? Yes No If “No”, please answer Item (5)(b). (b) List below the individual or individuals who exercise dispositive powers with respect to the Securities: Please note that the names of the persons listed in (b) above will be included in the Alternative Registration Statement and related Prospectus. (6) Relationships with the Company: Except as set forth below, neither the Selling Securityholder nor any of its affiliates, officers, directors or principal equity holders (5% or more) has held any position or office or has had any other material relationship with the Company (or its predecessors or affiliates) during the past three years.

Exchange and Registration Rights Agreement A-7 (b) If the answer to (a) is “Yes”, you must answer (i) and (ii) below, and (iii) below if applicable. Your answers to (i) and (ii) below, and (iii) below if applicable, will be included in the Alternative Registration Statement and related Prospectus. (i) Were the Securities acquired as compensation for underwriting activities? Yes No If you answered “Yes”, please provide a brief description of the transaction(s) in which the Securities were acquired as compensation: (ii) Were the Securities acquired for investment purposes? Yes No (iii) If you answered “No” to both (i) and (ii), please explain the Selling Securityholder’s reason for acquiring the Securities: (c) State whether the undersigned Selling Securityholder is an affiliate of a registered broker- dealer and, if so, list the name(s) of the broker-dealer affiliate(s): Yes No (d) If you answered “Yes” to question (c) above: (i) Did the undersigned Selling Securityholder purchase Registrable Securities in the ordinary course of business? Yes No If the answer is “No” to question (d)(i), provide a brief explanation of the circumstances in which the Selling Securityholder acquired the Registrable Securities:

Exchange and Registration Rights Agreement A-8 (ii) At the time of the purchase of the Registrable Securities, did the undersigned Selling Securityholder have any agreements, understandings or arrangements, directly or indirectly, with any person to dispose of or distribute the Registrable Securities? Yes No If the answer is “Yes” to question (d)(ii), provide a brief explanation of such agreements, understandings or arrangements: If the answer is “No” to Item (8)(d)(i) or “Yes” to Item (8)(d)(ii), you will be named as an underwriter in the Alternative Registration Statement and the related Prospectus. (9) Hedging and short sales: (a) State whether the undersigned Selling Securityholder has or will enter into “hedging transactions” with respect to the Registrable Securities: Yes No If “Yes”, provide below a complete description of the hedging transactions into which the undersigned Selling Securityholder has entered or will enter and the purpose of such hedging transactions, including the extent to which such hedging transactions remain in place: (b) Set forth below is Interpretation A.65 of the Commission’s July 1997 Manual of Publicly Available Interpretations regarding short selling: “An issuer filed a Form S-3 registration statement for a secondary offering of common stock which is not yet effective. One of the selling shareholders wanted to do a short sale of common stock “against the box” and cover the short sale with registered shares after the effective date. The issuer was advised that the short sale could not be made before the registration statement becomes effective, because the shares underlying the short sale are deemed to be sold at the time such sale is made. There would, therefore, be a violation of Section 5 if the shares were effectively sold prior to the effective date.”

Exchange and Registration Rights Agreement A-9 By returning this Notice and Questionnaire, the undersigned Selling Securityholder will be deemed to be aware of the foregoing interpretation. * * * * * By signing below, the Selling Securityholder acknowledges that it understands its obligation to comply, and agrees that it will comply, with the provisions of the Exchange Act, particularly Regulation M (or any successor rule or regulation). The Selling Securityholder hereby acknowledges its obligations under the Exchange and Registration Rights Agreement to indemnify and hold harmless the Company and certain other persons as set forth in the Exchange and Registration Rights Agreement. In the event that the Selling Securityholder transfers all or any portion of the Registrable Securities listed in Item (3) above after the date on which such information is provided to the Company, the Selling Securityholder agrees to notify the transferee(s) at the time of the transfer of its rights and obligations under this Notice and Questionnaire and the Exchange and Registration Rights Agreement. By signing below, the Selling Securityholder consents to the disclosure of the information contained herein in its answers to Items (1) through (9) above and the inclusion of such information in the Alternative Registration Statement and related Prospectus. The Selling Securityholder understands that such information will be relied upon by the Company in connection with the preparation of the Alternative Registration Statement and related Prospectus. In accordance with the Selling Securityholder’s obligation under Section 3(c) of the Exchange and Registration Rights Agreement to provide such information as may be required by law for inclusion in the Alternative Registration Statement, the Selling Securityholder agrees to promptly notify the Company of any inaccuracies or changes in the information provided herein which may occur subsequent to the date hereof at any time while the Alternative Registration Statement remains in effect and to provide such additional information that the Company may reasonably request regarding such Selling Securityholder and the intended method of distribution of Registrable Securities in order to comply with the Securities Act. Except as otherwise provided in the Exchange and Registration Rights Agreement, all notices hereunder and pursuant to the Exchange and Registration Rights Agreement shall be made in writing, by hand-delivery, first- class mail, or air courier guaranteeing overnight delivery as follows: (i) To the Company: Oglethorpe Power Corporation__________ 2100 East Exchange Place_____________ Tucker, GA 30084____________________ Attn: [________]______________________ Telephone No: [__________]____________ (ii) With a copy to:

Exchange and Registration Rights Agreement A-10 ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Once this Notice and Questionnaire is executed by the Selling Securityholder and received by the Company’s counsel, the terms of this Notice and Questionnaire, and the representations and warranties contained herein, shall be binding on, shall inure to the benefit of and shall be enforceable by the respective successors, heirs, personal representatives, and assigns of the Company and the Selling Securityholder (with respect to the Registrable Securities beneficially owned by such Selling Securityholder and listed in Item (3) above). This Notice and Questionnaire shall be governed in all respects by the laws of the State of New York.

Exchange and Registration Rights Agreement A-11 IN WITNESS WHEREOF, the undersigned, by authority duly given, has caused this Notice and Questionnaire to be executed and delivered either in person or by its duly authorized agent. Dated: Selling Securityholder (Print/type full legal name of beneficial owner of Registrable Securities) By: Name: Title: PLEASE RETURN THE COMPLETED AND EXECUTED NOTICE AND QUESTIONNAIRE FOR RECEIPT ON OR BEFORE [DEADLINE FOR RESPONSE] TO THE COMPANY’S COUNSEL AT: Eversheds Xxxxxxxxxx (US) LLP_____ 000 Xxxxxxxxx Xx. XX, Xxxxx 0000____ Xxxxxxx, Xxxxxxx 00000-3996________ Attn:___________________________ Telephone No:___________________

Exchange and Registration Rights Agreement Exhibit B NOTICE OF TRANSFER PURSUANT TO REGISTRATION STATEMENT U.S. Bank National Association, as Trustee Oglethorpe Power Corporation (An Electric Membership Corporation) c/o U.S. Bank National Association Attn: Corporate Trust Services 0000 Xxxx Xxxxxxxxx Xxxxxx, XX Xxxxx 0000, Xxx Xxxxxxx Xxxxx Xxxxxxx, Xxxxxxx 00000 Attention: Trust Officer Re: Oglethorpe Power Corporation (An Electric Membership Corporation) (the “Company”) 5.800% Green First Mortgage Bonds, Series 2024A due 2054 Dear Sirs: Please be advised that ________________________ has transferred $________________________ aggregate principal amount of the above-referenced Bonds pursuant to an effective Registration Statement on Form [__] (File No. 333-____) filed by the Company. We hereby certify that the prospectus delivery requirements, if any, of the Securities Act of 1933, as amended, have been satisfied and that the above-named beneficial owner of the Bonds is named as a “Selling Holder” in the Prospectus dated [date] or in supplements thereto, and that the aggregate principal amount of the Bonds transferred are the Bonds listed in such Prospectus opposite such owner’s name. Dated: Very truly yours, ________________________________________ (Name) By: ______________________________________ (Authorized Signature)

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The term “broker-dealer” shall mean any broker or dealer registered with the Commission under the Exchange Act. “Business Day” shall have the meaning set forth in Rule 13e-4(a)(3) promulgated by the Commission under the Exchange Act, as the same may...

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The term “broker-dealer” shall mean any broker or dealer registered with the Commission under the Exchange Act. “Business Day” shall have the meaning set forth in Rule 13e-4(a)(3) promulgated by the Commission under the Exchange Act, as the same may...

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