Potomac Energy Center, LLC is a natural gas-fired power facility with 812 MW of EIA-reported nameplate capacity in Loudoun County, Virginia, registered as EIA Plant ID 59004. The plant's generating configuration is natural-gas-fired combined-cycle plant with 3 operating generators and two Siemens SGT6-5000F combustion turbines. Blackstone Energy Transition Partners acquired the project from Ares Management in 2025.
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Primary generation technology.
Loudoun County · PJM
Natural Gas Fired Combined Cycle
Potomac Energy Center, LLC is operating.
PJM
PJM · Loudoun County
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Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| GEN1 | 237 MW 220 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Apr 2017 | Operating |
| GEN2 | 237 MW 220 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Apr 2017 | Operating |
| GEN3 | 338 MW 326 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Apr 2017 | 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.
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Project milestones and public references behind the asset profile.
Panda began site work at the Stonewall facility in mid-July 2014.
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 GEN1, generator GEN2, generator GEN3 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Potomac Energy Center, LLC has a reported capacity of 812 MW. Source: EIA Form 860.
Potomac Energy Center, LLC is a Natural Gas Fired Combined Cycle facility in Loudoun County, VA, participating in the PJM market.
Potomac Energy Center, LLC is in Loudoun County, VA, inside the PJM balancing area.
Potomac Energy Center, LLC is operated by Potomac Energy Center LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Potomac Energy Center, LLC reported 4,807.3 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
By capacity, Potomac Energy Center, LLC ranks #140 of 538 operating plants of the same technology nationally. It ranks #5 of 11 in VA.
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.
