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Ocean State Power II

Gas power plant in Rhode Island, United States of America. Approximate location 42.0099, -71.6701.

GasRhode IslandUnited States of AmericaCO₂ reported

Ocean State Power II is a 254 MW gas power station in Rhode Island, United States of America. It is operated by Ocean State Power II. Based on reported annual generation of 609 GWh, it can supply roughly 173,971 homes. It ranks #1065 of 9,833 United States of America power plants by installed capacity. Commissioned in 1991, it is around 35 years old — long-established. Its measured emissions of 489,534 t CO₂/yr (US EPA GHGRP) are equivalent to about 114,110 cars driven for a year. In context, gas supplies about 40.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

254MW installed capacity
609GWh reported / yr
173,971homes powered
489,534t CO₂ / yr (US EPA GHGRP)
1991commissioned (~35 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0054324.

489,534 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

114,110passenger cars driven for a year
63,841homes' yearly energy use
8,158,900tree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to US EPA GHGRP.

Reported generation trend

2013: 579 GWh20132014: 560 GWh20142015: 588 GWh20152016: 284 GWh20162017: 543 GWh20172018: 836 GWh20182019: 609 GWh2019836 GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Ocean State Power II.

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 42.0°N — which shapes how much energy it can produce and how its output varies through the year.

9.1°Cannual mean temp
3,413heating degree-days (base 18°C)
201cooling degree-days (base 18°C)
119 melevation

Monthly mean temperature

J: -4 °CJF: -3 °CFM: 2 °CMA: 7 °CAM: 13 °CMJ: 18 °CJJ: 21 °CJA: 21 °CAS: 17 °CSO: 11 °CON: 6 °CND: 0 °CD21 °C

Heating degree-days here run 39% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 74/100 — this site sits in the top third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

How it compares & nearby plants

The #628 largest gas power plant of 1818 in United States of America by capacity.

United States of America has 1818 gas power plants in this dataset, together about 546,436 MW of capacity.

Nearby power plants

Location

Coordinates 42.0099, -71.6701 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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