NOTICE OF FILING OF AMENDED TARIFF FOR CO-GENERATION AND SMALL POWER PRODUCTION FACILITIES IN COLORADO P.U.C. NO. 11 ELECTRIC TARIFF of Black Hills Colorado Electric, LLC d/b/a Black Hills Energy     You are hereby notified that Black Hills Colorado Electric, LLC, d/b/a Black Hills Energy, 105 South Victoria Avenue, P.O. Box 75, Pueblo, Colorado, 81003-0075, has filed with the Public Utilities Commission of the State of Colorado (“Commission”), in accordance with the Public Utilities Law, an advice letter with a revised tariff to increase the Energy Payment Rate (also referred to as the “Average Hourly Incremental Cost of Electricity”) contained in Tariff Sheet No. R36 in the Rules section of its Colo. P.U.C. No. 11 Electric Tariff, to become effective on January 1, 2026. The proposed tariff amendments have no effect on Company revenues if approved.      The revised tariff, if allowed to go into effect by the Commission, will increase the Energy Payment rate by 17.8% from $0.02963 per kWh to $0.03489 per kWh. The revised tariff affects co generation and small power producers, if approved. However, there are currently no co generation or small power production facilities on the Company’s system. The revised tariff also affects certain net metering customers. The Energy Payment Rate is the rate paid to net metered customers for any accrued excess energy production produced during the most recent calendar year if they elect the annual “cash-out” method rather than rolling the excess kWh over as a usage bill credit to the next year. This net metering payment methodology is consistent with Commission Rule 3664(b). Based on previous net metering “cash-out” payments, the Company anticipates a reduction of approximately $44k more due to the increased Energy Payment rate. The “cash-out” payments are funded through the Company’s Renewable Energy Standard Account.     Copies of the proposed and present tariffs as filed with the Public Utilities Commission of the State of Colorado are available for inspection at the public offices of Black Hills Energy at 105 South Victoria Avenue, Pueblo, Colorado, 81003; or, at the office of the Public Utilities Commission, 1560 Broadway, Suite 250, Denver, Colorado 80202. Customers with questions concerning the proposed or present tariffs may call the Commission at (303) 894-2000; or, may contact Black Hills Energy by telephone at (888) 890-5554 or by email custserv@blackhillscorp.com. In addition, the Company’s proposed and present tariffs may be viewed at www.blackhillsenergy.com and the applicable Colorado statutes and Commission rules may be viewed at www.dora.colorado.gov/puc.     Any person may file written comments or objections concerning the filing, with the Colorado Public Utilities Commission, 1560 Broadway, Suite 250, Denver, Colorado, 80202, at the following website: www.dora.state.co.us/pacific/PUC/ puccomments. Requests for written notices can also be made to the Commission by telephone at (303) 894-2000 or, alternatively, by contacting the External Affairs section of the Commission at its local number (303) 894-2070 or toll-free number (800) 456-0858. The Commission will consider all written comments and objections submitted prior to the evidentiary hearing on the application. Written objections (protests) must be filed at least ten (10) days before the proposed effective date of January 1, 2026. Filing a written objection (protest) by itself will not allow you to participate as a party in any proceeding established in these matters. If you wish to participate as a party in this matter, you must file written intervention documents under Commission Rule 723-1-1401, 4 Colorado Code of Regulations 723-1. The rates, rules, and regulations ultimately authorized by the Commission may or may not be the same as those proposed and may include rates higher or lower than those proposed or currently in effect.     The Commission may suspend the proposed tariffs, rates, rules, or regulations. The Commission may hold a hearing to determine which rates, rules, and regulations will be authorized. If a hearing is held, any member of the public may attend the hearing and may make a statement under oath about the proposed tariffs, whether or not he or she has filed an objection or intervention. If the filing is uncontested or unopposed, the Commission may determine the matter without a hearing and without further notice.      By: Dan Ahrens Manager, Regulatory & Finance