Ocean State Power II
Natural gas power plant in Providence County, Rhode Island. 306.6 MW of nameplate capacity across 3 generators, operated by Ocean State Power II.
Also known as EIA plant 54324
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 306.6 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- October 1991First generator online
- Operator
- Ocean State Power IIEIA operator ID 27770
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Providence County, RI42.0099, −71.6701
- EIA plant ID
- 54324EIA 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 II produces
Free · EIA-923Net generation, 2025
577 GWh
576,873 MWh, final
Capacity factor, 2025
Not reported
2024: 40.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2016 to 2025
0.3–1.1
TWh a year. Low 2016, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,456,556 | Not reported | 12 of 12 |
| 2001 | 1,577,325 | Not reported | 12 of 12 |
| 2002 | 1,279,028 | Not reported | 12 of 12 |
| 2003 | 721,961 | Not reported | 12 of 12 |
| 2004 | 649,273 | Not reported | 12 of 12 |
| 2005 | 481,992 | Not reported | 12 of 12 |
| 2006 | 470,368 | Not reported | 12 of 12 |
| 2007 | 715,856 | Not reported | 12 of 12 |
| 2008 | 555,075 | Not reported | 12 of 12 |
| 2009 | 539,409 | Not reported | 12 of 12 |
| 2010 | 678,493 | 30.5% | 12 of 12 |
| 2011 | 737,950 | 33.1% | 12 of 12 |
| 2012 | 682,491 | 30.6% | 12 of 12 |
| 2013 | 579,303 | Not reported | 12 of 12 |
| 2014 | 559,769 | 25.1% | 12 of 12 |
| 2015 | 79,095 | 21.3% | 2 of 12 |
| 2016 | 284,436 | 12.7% | 12 of 12 |
| 2017 | 543,310 | 24.4% | 12 of 12 |
| 2018 | 835,958 | 37.5% | 12 of 12 |
| 2019 | 608,879 | 27.3% | 12 of 12 |
| 2020 | 633,092 | 28.4% | 12 of 12 |
| 2021 | 879,984 | 39.5% | 12 of 12 |
| 2022 | 708,046 | 31.8% | 12 of 12 |
| 2023 | 1,082,097 | 48.6% | 12 of 12 |
| 2024 | 896,830 | 40.2% | 12 of 12 |
| 2025 | 576,873 | Not reported | 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
286,116
US short tons. 2024: 448,239
SO₂, 2025
1
US short tons
NOx, 2025
38
US short tons
CO₂ per MWh, calculated
0.50 t
About 992 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (3, 4), matched to EIA plant 54324 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 | 97.3 | October 1991 |
| GEN2 | Natural Gas Fired Combined Cycle | 97.3 | October 1991 |
| GEN3 | Natural Gas Fired Combined Cycle | 112.0 | October 1991 |
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 II 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.
300 analyst questions a month, plus MCP
Query Ocean State Power II and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Ocean State Power II
Questions about Ocean State Power II
How much power does Ocean State Power II produce?
Ocean State Power II reported 576,873 MWh (577 GWh) of net generation in 2025.
Where is Ocean State Power II?
Ocean State Power II is in Providence County, Rhode Island, at 42.0099, −71.6701. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Ocean State Power II?
EIA-860M for August 2026 lists Ocean State Power II as the operator (EIA operator ID 27770). The operator is not always the owner.
When did Ocean State Power II start operating?
Its first generator began operating in October 1991, according to EIA-860M.
Does InfraMap have power prices for Ocean State Power II?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Ocean State Power II, 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