Anne Arundel County · PJM
Herbert A Wagner is a petroleum liquids facility with 773.7 MW of EIA-reported nameplate capacity in Anne Arundel County, Maryland, registered as EIA Plant ID 1554. H. A. Wagner LLC owns and operates the plant. The plant began commercial operation in 1966.
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EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Primary generation technology.
Anne Arundel County · PJM
Herbert A Wagner is currently operating; a closure or retirement is listed for May 31, 2029.
Baltimore Gas and Electric Company (BGE)
Best-supported operating milestone.
Petroleum Liquids
Herbert A Wagner is currently operating; a closure or retirement is listed for May 31, 2029.
Herbert A Wagner is currently operating; a closure or retirement is listed for May 31, 2029.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 132.8 MW 126 MW summer | Petroleum Liquids Disillate Fuel Oil · ST | Feb 1956 Retirement: May 2025 | Operating |
| 2 | 136 MW 118 MW summer | Conventional Steam Coal Refined Coal · ST | Jan 1959 Retirement: Jun 2020 | Operating |
| 3 | 359 MW 305 MW summer | Petroleum Liquids Disillate Fuel Oil · ST | Aug 1966 Retirement: Jun 2029 | 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.
Historical records identify Wagner Unit 1 as a coal-fired unit built in 1956.
Baltimore Gas and Electric Company (BGE)
PJM
PJM · Anne Arundel County
| 4 | 414.7 MW 397 MW summer | Petroleum Liquids Disillate Fuel Oil · ST | Aug 1972 Retirement: Jun 2029 | Operating |
| GT1 | 16 MW 12.9 MW summer | Petroleum Liquids Disillate Fuel Oil · GT | Aug 1967 Retirement: May 2025 | Operating |
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 1 with this operating date.
EIA-860 lists generator 2 with this operating date.
Wagner Unit 3 was completed or commissioned in 1966; it was originally coal-fired and later converted to fuel oil.
EIA-860 lists generator 3 with this operating date.
EIA-860 lists generator GT1 with this operating date.
Wagner Unit 4 was commissioned in 1972 as an oil-fired generation unit.
EIA-860 lists generator 4 with this operating date.
Talen Energy was established through the combination of PPL's competitive-generation assets with Riverstone's RJS Power business, which included the Raven Power facilities.
The 136 MW coal-fired Wagner Unit 2 was retired.
EIA-860 lists a planned retirement for generator 2.
Wagner notified PJM of its intent to retire Units 1, 3, 4, and the combustion turbine effective June 1, 2025.
Talen converted the coal-fired Wagner Unit 3 to run on fuel oil at the end of 2023.
EIA-860 lists a planned retirement for generator 1, generator GT1.
EIA-860 lists a planned retirement for generator 3, generator 4.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Herbert A Wagner has a reported capacity of 773.7 MW. Source: EIA Form 860.
Herbert A Wagner is a Petroleum Liquids facility in Anne Arundel County, MD, participating in the PJM market.
Herbert A Wagner is in Anne Arundel County, MD, inside the PJM balancing area.
Herbert A Wagner is operated by H.A. Wagner LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Herbert A Wagner reports a commercial operation date of 1956. Current status: operating. Source: EIA Form 860.
Herbert A Wagner reported 269.3 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
Herbert A Wagner interconnects at Wagner Substation, on the Baltimore Gas and Electric Company (BGE) system.
By capacity, Herbert A Wagner ranks #3 of 705 operating plants of the same technology nationally. It ranks #1 of 12 in MD.
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.
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