Talen Energy Corp 10-K

ITEM 2. PROPERTIES GENERATION FLEET AS OF DECEMBER 31, 2024 Generation Facility MW Capacity (a) Percentage Ownership MW Ownership Fuel Type Plant Type State PJM Susquehanna (b) 2,476 90 % 2,228 Nuclear Baseload PA Martins Creek 1,705 100 % 1,705 Natural Gas/Oil Peaker PA Montour 1,528 100 % 1,528 Natural Gas Peaker PA Brunner Island (c) (d) 1,429 100 % 1,429 Coal/Natural Gas Intermediate PA Brandon Shores (e) 1,289 100 % 1,289 Coal Peaker MD H.A. Wagner (e) 843 100 % 843 Natural Gas/Oil Peaker MD Lower Mt. Bethel 608 100 % 608 Natural Gas Baseload PA Conemaugh (b) (d) 1,736 22.22 % 386 Coal Intermediate PA Keystone (b) (d) 1,724 12.34 % 213 Coal Intermediate PA Camden 145 100 % 145 Natural Gas Peaker NJ Total 13,483 10,374 Other Power Markets WECC Colstrip Unit 3 (b) 740 30 % 222 Coal Baseload MT ISO-NE Dartmouth 80 100 % 80 Natural Gas/Oil Peaker MA Total 820 302 Generation Fleet 14,303 10,676 __________________ (a) Generation capacity (summer rating) is based on factors, among others, such as operating experience and physical conditions, which may be subject to revision. (b) See Note 10 to the Annual Financial Statements for additional information on jointly owned facilities. (c) Coal-fired electric generation is restricted during the EPA Ozone Season, which is May 1 to September 30 of each year. (d) Coal-fired electric generation is required to cease at Brunner Island, Keystone, and Conemaugh by December 2028. (e) See Note 10 to the Annual Financial Statements for additional information on the Brandon Shores and H.A. Wagner deactivations and RMR proceedings.