TalenEnergy Martins Creek is a natural gas-fired power facility with 1,701 MW of EIA-reported operating capacity in Northampton County, Pennsylvania, registered as EIA Plant ID 3148. TalenEnergy Martins Creek LLC owns and operates the plant. In 1977, the addition of Martins Creek Unit 4 made the plant the largest generating station in the Pennsylvania Power & Light system.
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
TalenEnergy Martins Creek LLC · Northampton County · PJM
TalenEnergy Martins Creek is currently operating; a closure or retirement is listed for June 2035.
230 kV · PPL Electric Utilities Corp
Best-supported operating milestone.
On August 9, 2023, Talen refinanced the non-recourse Lower Mount Bethel–Martins Creek subsidiary debt by upsizing its 2030 Term Loan B by $290 million.
Natural Gas Steam Turbine
TalenEnergy Martins Creek is currently operating; a closure or retirement is listed for June 2035.
TalenEnergy Martins Creek is currently operating; a closure or retirement is listed for June 2035.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 3 | 850.5 MW 850 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Oct 1975 Retirement: Jun 2035 | Operating |
| 4 | 850.5 MW 850 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Mar 1977 Retirement: Jun 2035 | Operating |
| CTG1 | 23.6 MW 18 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Jun 1971 Retirement: Jun 2023 | Operating |
| CTG2 | 23.6 MW 17.3 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | ||
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
EIA-860 lists generator CTG1, generator CTG2, generator CTG3, generator CTG4 with this operating date.
230 kV · PPL Electric Utilities Corp
PJM
PJM · Northampton County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator 3 with this operating date.
Unit 4 began commercial operation in March 1977 after test operation, repairs, and testing following a February 1977 fuel-oil leak and fire.
PPL completed the spinoff of its competitive energy business, and the business was immediately combined with Riverstone Holdings generation assets to form Talen Energy. PPL’s former Pennsylvania power plants, including Martins Creek, became part of Talen; the transaction was not reported as a standalone Martins Creek sale with separate consideration.
EIA-860 lists a planned retirement for generator CTG3.
EIA-860 lists a planned retirement for generator CTG1, generator CTG2, generator CTG4.
Talen refinanced the non-recourse Lower Mount Bethel–Martins Creek subsidiary debt through a $290 million upsizing of its 2030 Term Loan B. The financing repaid project-financing debt and brought the assets into the Talen credit group.
EIA’s planned-retirement table lists both Martins Creek Generators 3 and 4 for retirement in June 2035.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
TalenEnergy Martins Creek has a reported capacity of 1,701 MW. Source: EIA Form 860.
TalenEnergy Martins Creek is a Natural Gas Steam Turbine facility in Northampton County, PA, participating in the PJM market.
TalenEnergy Martins Creek is in Northampton County, PA, inside the PJM balancing area.
TalenEnergy Martins Creek is operated by TalenEnergy Martins Creek LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
TalenEnergy Martins Creek reported 2,948.5 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
TalenEnergy Martins Creek interconnects at Martins Creek 230 kV switchyard, on the PPL Electric Utilities Corp system.
By capacity, TalenEnergy Martins Creek ranks #6 of 257 operating plants of the same technology nationally. It ranks #1 of 12 in PA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
