Ocean State Power
Natural gas power plant in Providence County, Rhode Island. 254.2 MW of nameplate capacity across 3 generators, operated by Ocean State Power Co.
Also known as EIA plant 51030
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 254.2 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- December 1990First generator online
- Operator
- Ocean State Power CoEIA operator ID 27769
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Providence County, RI42.0097, −71.6689
- EIA plant ID
- 51030EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ocean State Power produces
Free · EIA-923Net generation, 2025
1.01 TWh
1,011,965 MWh, final
Capacity factor, 2025
45.4%
2024: 53.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2016 to 2025
0.5–1.3
TWh a year. Low 2016, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,498,211 | Not reported | 12 of 12 |
| 2001 | 1,508,087 | Not reported | 12 of 12 |
| 2002 | 1,224,814 | Not reported | 12 of 12 |
| 2003 | 812,179 | Not reported | 12 of 12 |
| 2004 | 674,259 | Not reported | 12 of 12 |
| 2005 | 296,285 | Not reported | 12 of 12 |
| 2006 | 522,796 | Not reported | 12 of 12 |
| 2007 | 692,797 | Not reported | 12 of 12 |
| 2008 | 574,665 | Not reported | 12 of 12 |
| 2009 | 509,858 | Not reported | 12 of 12 |
| 2010 | 755,513 | 33.9% | 12 of 12 |
| 2011 | 710,944 | 31.9% | 12 of 12 |
| 2012 | 868,611 | 38.9% | 12 of 12 |
| 2013 | 700,939 | Not reported | 12 of 12 |
| 2014 | 593,995 | 26.7% | 12 of 12 |
| 2015 | 696,353 | 34.2% | 11 of 12 |
| 2016 | 487,713 | 21.8% | 12 of 12 |
| 2017 | 513,404 | 23.1% | 12 of 12 |
| 2018 | 679,062 | 30.5% | 12 of 12 |
| 2019 | 639,424 | 28.7% | 12 of 12 |
| 2020 | 663,233 | 29.7% | 12 of 12 |
| 2021 | 1,046,455 | 47.0% | 12 of 12 |
| 2022 | 765,028 | 34.4% | 12 of 12 |
| 2023 | 1,322,327 | 59.4% | 12 of 12 |
| 2024 | 1,182,727 | 53.0% | 12 of 12 |
| 2025 | 1,011,965 | 45.4% | 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 · ISONEEmissions
Free · EPA CAMPDCO₂, 2025
489,976
US short tons. 2024: 583,190
SO₂, 2025
2
US short tons
NOx, 2025
111
US short tons
CO₂ per MWh, calculated
0.48 t
About 968 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 51030 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, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | 82.8 | December 1990 |
| GEN2 | Natural Gas Fired Combined Cycle | 82.8 | December 1990 |
| GEN3 | Natural Gas Fired Combined Cycle | 88.6 | December 1990 |
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 Ocean State Power Co 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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Questions about Ocean State Power
How much power does Ocean State Power produce?
Ocean State Power reported 1,011,965 MWh (1.01 TWh) of net generation in 2025, a 45.4% capacity factor on 254.2 MW of nameplate capacity.
Where is Ocean State Power?
Ocean State Power is in Providence County, Rhode Island, at 42.0097, −71.6689. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Ocean State Power?
EIA-860M for August 2026 lists Ocean State Power Co as the operator (EIA operator ID 27769). The operator is not always the owner.
When did Ocean State Power start operating?
Its first generator began operating in December 1990, according to EIA-860M.
Does InfraMap have power prices for Ocean State Power?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Ocean State Power, 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
- ISONE 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