Chester Generating Station
Oil power plant in Chester County, Pennsylvania. 55.8 MW of nameplate capacity across 3 generators, operated by Constellation Power, Inc.
Also known as EIA plant 3157
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 55.8 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- February 1969First generator online
- Operator
- Constellation Power, IncEIA operator ID 6035
- Grid
- PJMBalancing authority PJM
- Price nodes
- 3 PJM nodesResource nodes with prices
- Location
- Chester County, PA39.8301, −75.3837
- EIA plant ID
- 3157EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Chester produces
Free · EIA-923Net generation, 2025
944 MWh
944 MWh, final
Capacity factor, 2025
0.2%
2024: 0.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.1–1.8
GWh a year. Low 2023, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 2,143 | Not reported | 12 of 12 |
| 2001 | 2,451 | Not reported | 12 of 12 |
| 2002 | 1,109 | Not reported | 12 of 12 |
| 2003 | 498 | Not reported | 11 of 12 |
| 2004 | 179 | Not reported | 12 of 12 |
| 2005 | 3,314 | Not reported | 12 of 12 |
| 2006 | 1,024 | Not reported | 12 of 12 |
| 2007 | 776 | Not reported | 12 of 12 |
| 2008 | 751 | Not reported | 12 of 12 |
| 2009 | 179 | Not reported | 12 of 12 |
| 2010 | 972 | 0.2% | 12 of 12 |
| 2011 | 944 | 0.2% | 12 of 12 |
| 2012 | 557 | 0.1% | 12 of 12 |
| 2013 | 922 | 0.2% | 12 of 12 |
| 2014 | 2,984 | 0.6% | 12 of 12 |
| 2015 | 1,189 | 0.2% | 12 of 12 |
| 2016 | 259 | 0.1% | 12 of 12 |
| 2017 | 998 | 0.2% | 12 of 12 |
| 2018 | 1,585 | 0.3% | 12 of 12 |
| 2019 | 218 | 0.0% | 12 of 12 |
| 2020 | 68 | 0.0% | 12 of 12 |
| 2021 | 94 | 0.0% | 12 of 12 |
| 2022 | 1,762 | 0.4% | 12 of 12 |
| 2023 | 50 | 0.0% | 12 of 12 |
| 2024 | 128 | 0.0% | 12 of 12 |
| 2025 | 944 | 0.2% | 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 |
|---|---|---|---|
| 7 | Petroleum Liquids | 18.6 | February 1969 |
| 8 | Petroleum Liquids | 18.6 | May 1969 |
| 9 | Petroleum Liquids | 18.6 | March 1969 |
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, Inc 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 Chester
More plants operated by Constellation Power, Inc
Questions about Chester
How much power does Chester Generating Station produce?
Chester Generating Station reported 944 MWh (944 MWh) of net generation in 2025, a 0.2% capacity factor on 55.8 MW of nameplate capacity.
Where is Chester Generating Station?
Chester Generating Station is in Chester County, Pennsylvania, at 39.8301, −75.3837. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Chester Generating Station?
EIA-860M for August 2026 lists Constellation Power, Inc as the operator (EIA operator ID 6035). The operator is not always the owner.
When did Chester Generating Station start operating?
Its first generator began operating in February 1969, according to EIA-860M.
Does InfraMap have power prices for Chester Generating Station?
Yes. InfraMap has PJM day-ahead and real-time prices at 3 price nodes linked to Chester Generating Station, 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
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page