Ontelaunee Energy Center is a natural gas-fired power facility with 728 MW of EIA-reported nameplate capacity in Berks County, Pennsylvania, registered as EIA Plant ID 55193. Ontelaunee Power Operating Company LLC is the public owner or developer; Ontelaunee Energy Center is the registered plant entity or operator. LSP Ontelaunee Holding, LLC acquired a 100% interest in the plant from A subsidiary of Calpine Corporation in 2005.
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Primary generation technology.
Ontelaunee Energy Center · Berks County · PJM
Ontelaunee Energy Center is operating.
Natural Gas Fired Combined Cycle
Ontelaunee Energy Center is operating.
PJM
PJM · Berks County
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| CTG1 | 250 MW 186.3 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | May 2002 | Operating |
| CTG2 | 250 MW 184.8 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | May 2002 | Operating |
| STG | 228 MW 174.8 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | May 2002 | Operating |
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.
Drag organizations to explore the network. Select a node to pin its details and available page link.
Project milestones and public references behind the asset profile.
EIA-860 lists generator CTG1, generator CTG2, generator STG with this operating date.
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.
Calpine announced an agreement to sell the then-described 550 MW Ontelaunee Energy Center to LS Power Equity Partners for $225 million.
The Ontelaunee HRSG project received the CCJ 2012 Pacesetter Plant Award.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Ontelaunee Energy Center has a reported capacity of 728 MW. Source: EIA Form 860.
Ontelaunee Energy Center is a Natural Gas Fired Combined Cycle facility in Berks County, PA, participating in the PJM market.
Ontelaunee Energy Center is in Berks County, PA, inside the PJM balancing area.
Ontelaunee Energy Center is operated by Ontelaunee Energy Center according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Ontelaunee Energy Center reported 3,631.7 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
By capacity, Ontelaunee Energy Center ranks #166 of 538 operating plants of the same technology nationally. It ranks #15 of 26 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.
