Eddystone Generating Station
Natural gas power plant in Delaware County, Pennsylvania. 861.6 MW of nameplate capacity across 6 generators, operated by Constellation Power, Inc.
Also known as EIA plant 3161
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Key facts
- Capacity
- 861.6 MWNatural gas 782.0 · Oil 79.6
- Generators
- 6 operatingEIA-860M, August 2026
- Operating since
- May 1967First generator online
- Operator
- Constellation Power, IncEIA operator ID 6035
- Grid
- PJMBalancing authority PJM
- Price nodes
- 6 PJM nodesResource nodes with prices
- Location
- Delaware County, PA39.8580, −75.3230
- EIA plant ID
- 3161EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Eddystone produces
Free · EIA-923Net generation, 2025
37.4 GWh
37,425 MWh, final
Capacity factor, 2025
0.5%
2024: 0.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2016 to 2025
12.4–141.8
GWh a year. Low 2020, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 3,392,789 | Not reported | 12 of 12 |
| 2001 | 3,916,008 | Not reported | 12 of 12 |
| 2002 | 2,753,258 | Not reported | 12 of 12 |
| 2003 | 3,525,794 | Not reported | 12 of 12 |
| 2004 | 3,205,701 | Not reported | 12 of 12 |
| 2005 | 3,467,394 | Not reported | 12 of 12 |
| 2006 | 2,886,159 | Not reported | 12 of 12 |
| 2007 | 2,939,598 | Not reported | 12 of 12 |
| 2008 | 2,159,334 | Not reported | 12 of 12 |
| 2009 | 2,041,294 | Not reported | 12 of 12 |
| 2010 | 2,034,237 | 14.8% | 12 of 12 |
| 2011 | 426,617 | Not reported | 12 of 12 |
| 2012 | 43,396 | Not reported | 12 of 12 |
| 2013 | 37,278 | 0.5% | 12 of 12 |
| 2014 | 29,542 | 2.4% | 2 of 12 |
| 2015 | −2,455 | Not reported | 1 of 12 |
| 2016 | 141,781 | 1.9% | 12 of 12 |
| 2017 | 47,481 | 0.6% | 12 of 12 |
| 2018 | 44,645 | 0.6% | 12 of 12 |
| 2019 | 13,321 | 0.2% | 12 of 12 |
| 2020 | 12,360 | 0.2% | 12 of 12 |
| 2021 | 16,473 | 0.2% | 12 of 12 |
| 2022 | 20,218 | 0.3% | 12 of 12 |
| 2023 | 26,701 | 0.4% | 12 of 12 |
| 2024 | 60,769 | 0.8% | 12 of 12 |
| 2025 | 37,425 | 0.5% | 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 CAMPDCO₂, 2025
44,906
US short tons. 2024: 58,565
SO₂, 2025
0
US short tons
NOx, 2025
30
US short tons
CO₂ per MWh, calculated
1.20 t
About 2,400 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2, 3, 30, 4, 40), matched to EIA plant 3161 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
51,773
million gallons
Consumption, 2024
29
million gallons
Source
Delaware River
Surface, Fresh. Once-through
Watershed stress
Very low/none · 0.121
USGS SUI, HUC12 Crum Creek
24 of 24 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 3 | Natural Gas Steam Turbine | 391.0 | September 1974 |
| 4 | Natural Gas Steam Turbine | 391.0 | June 1976 |
| 10 | Petroleum Liquids | 18.6 | May 1967 |
| 20 | Petroleum Liquids | 18.6 | October 1967 |
| 30 | Petroleum Liquids | 21.2 | March 1970 |
| 40 | Petroleum Liquids | 21.2 | June 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, 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 Eddystone
More plants operated by Constellation Power, Inc
Questions about Eddystone
How much power does Eddystone Generating Station produce?
Eddystone Generating Station reported 37,425 MWh (37.4 GWh) of net generation in 2025, a 0.5% capacity factor on 861.6 MW of nameplate capacity.
Where is Eddystone Generating Station?
Eddystone Generating Station is in Delaware County, Pennsylvania, at 39.8580, −75.3230. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Eddystone 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 Eddystone Generating Station start operating?
Its first generator began operating in May 1967, according to EIA-860M.
Does InfraMap have power prices for Eddystone Generating Station?
Yes. InfraMap has PJM day-ahead and real-time prices at 6 price nodes linked to Eddystone 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)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page