What changed in this filing

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Item 2. Properties

2025-02-28 compared with 2016-02-29 · 32 added, 47 removed, 0 unchanged (100% of the section changed)

The capacity of generation units is based on a number of factors, including the operating experience and physical conditions of the units and may be revised periodically to reflect changed circumstances.

Talen Energy's electric generating capacity (summer rating) at December 31, 2015 by segment was as follows.

Total MW Capacity

Talen Energy's Ownership in MW

Martins Creek

Talen Generation

Natural Gas/Oil

Talen Generation

Combustion turbines

Talen Generation

Natural Gas/Oil

Pedricktown (b)

Natural Gas/Oil

Talen Generation

Brunner Island

Talen Generation

Conemaugh (c)

Talen Generation

Brandon Shores

Coal/Natural Gas/Oil

Susquehanna (c)

Talen Generation

Lake Wallenpaupack (a)

Talen Generation

Renewables (d)

Colstrip Units 1 & 2 (c)

Talen Generation

Colstip Unit 3 (c)

Talen Generation

Plant was sold in the first quarter of 2016 or is under an agreement of sale to satisfy the FERC approved mitigation in connection with the RJS Power acquisition.

See Note 1 to the Financial Statements for additional information on the FERC approved mitigation and Note 6 to the Financial Statements for additional information on the announced sales.

Pedricktown includes capacity dedicated to serving landlord load (maximum of 11 MW).

This unit is jointly owned.

Each owner is entitled to its proportionate share of the unit's total output and funds its proportionate share of fuel and other operating costs.

See Note 10 to the Financial Statement for additional information.

Includes facilities for which Talen Energy has the rights to the output through agreements of Talen Energy Marketing with third parties.

Certain of Talen Energy's credit arrangements are secured by liens on the majority of the plants above.

See Note 5 to the Financial Statements for additional information.

Talen Energy's corporate headquarters are located at 835 Hamilton Street, Suite 150, Allentown, PA 18101-1179 under a lease that expires in 2018.

GENERATION FLEET AS OF DECEMBER 31, 2024

Generation Facility MW Capacity (a)

Percentage Ownership MW Ownership Fuel Type Plant Type State

Susquehanna (b)

2,476 90 % 2,228 Nuclear Baseload PA

Martins Creek 1,705 100 % 1,705 Natural Gas/Oil Peaker PA

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

843 100 % 843 Natural Gas/Oil Peaker MD

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

Colstrip Unit 3 (b)

740 30 % 222 Coal Baseload MT

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.

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 2. Properties