Philadelphia
Oil power plant in Baltimore City, Maryland. 82.8 MW of nameplate capacity across 4 generators, operated by Constellation Power Source Generation, LLC.
Also known as Philadelphia Power Plant · EIA plant 1557
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 82.8 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- August 1970First generator online
- Operator
- Constellation Power Source Generation, LLCEIA operator ID 4161
- Grid
- PJMBalancing authority PJM
- Price nodes
- 4 PJM nodesResource nodes with prices
- Location
- Baltimore City, MD39.2986, −76.5636
- EIA plant ID
- 1557EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Philadelphia produces
Free · EIA-923Net generation, 2025
9.26 GWh
9,262 MWh, final
Capacity factor, 2025
1.3%
2024: 0.7%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
1.2–9.3
GWh a year. Low 2017, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 5,888 | Not reported | 12 of 12 |
| 2001 | 13,847 | Not reported | 12 of 12 |
| 2002 | 12,954 | Not reported | 12 of 12 |
| 2003 | 17,709 | Not reported | 11 of 12 |
| 2004 | 11,645 | Not reported | 12 of 12 |
| 2005 | 20,111 | Not reported | 12 of 12 |
| 2006 | 10,279 | Not reported | 12 of 12 |
| 2007 | 13,446 | Not reported | 12 of 12 |
| 2008 | 4,065 | Not reported | 12 of 12 |
| 2009 | 1,027 | Not reported | 12 of 12 |
| 2010 | 3,553 | 0.5% | 12 of 12 |
| 2011 | 5,019 | 0.7% | 12 of 12 |
| 2012 | 1,459 | 0.2% | 12 of 12 |
| 2013 | 3,725 | 0.5% | 12 of 12 |
| 2014 | 13,387 | 1.8% | 12 of 12 |
| 2015 | 3,921 | 0.5% | 12 of 12 |
| 2016 | 5,178 | 0.7% | 12 of 12 |
| 2017 | 1,175 | 0.2% | 12 of 12 |
| 2018 | 4,833 | 0.7% | 12 of 12 |
| 2019 | 1,804 | 0.2% | 12 of 12 |
| 2020 | 3,892 | 0.5% | 12 of 12 |
| 2021 | 4,294 | 0.6% | 12 of 12 |
| 2022 | 5,294 | 0.7% | 12 of 12 |
| 2023 | 1,807 | 0.2% | 12 of 12 |
| 2024 | 4,940 | 0.7% | 12 of 12 |
| 2025 | 9,262 | 1.3% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GT1 | Petroleum Liquids | 20.7 | August 1970 |
| GT2 | Petroleum Liquids | 20.7 | August 1970 |
| GT3 | Petroleum Liquids | 20.7 | September 1970 |
| GT4 | Petroleum Liquids | 20.7 | September 1970 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Constellation Power Source Generation, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Philadelphia
More plants operated by Constellation Power Source Generation, LLC
Questions about Philadelphia
How much power does Philadelphia produce?
Philadelphia reported 9,262 MWh (9.26 GWh) of net generation in 2025, a 1.3% capacity factor on 82.8 MW of nameplate capacity.
Where is Philadelphia?
Philadelphia is in Baltimore City, Maryland, at 39.2986, −76.5636. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Philadelphia?
EIA-860M for August 2026 lists Constellation Power Source Generation, LLC as the operator (EIA operator ID 4161). The operator is not always the owner.
When did Philadelphia start operating?
Its first generator began operating in August 1970, according to EIA-860M.
Does InfraMap have power prices for Philadelphia?
Yes. InfraMap has PJM day-ahead and real-time prices at 4 price nodes linked to Philadelphia, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page