Nine Springs — United States of America
Gas power plant in Wisconsin, United States of America. Approximate location 43.0386, -89.3586.
GasWisconsinUnited States of AmericaCO₂ modelled
Nine Springs is a 16.2 MW gas power plant in Wisconsin, United States of America. It is operated by Madison Gas & Electric Co. Based on its capacity (estimated), it can supply roughly 18k homes (estimated). It ranks #5038 of 10,884 United States of America power plants by installed capacity. Commissioned in 1965, it is around 61 years old — an older, legacy facility. Its modelled annual emissions are 23,540 t CO₂/yr (Climate TRACE), equivalent to about 5.5k 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).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0009674.
Data status
Known data
Modelled source data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: Wikidata P2109; fuel: WRI GPPD
In context: how this plant compares
At 16.2 MW, Nine Springs is below the median gas plant in United States of America (121.2 MW). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
~23,540 t CO₂/yr (modelled) — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Key facts
- Share of United States of America gas capacity
- less than 0.1% of 789,950 MW across 2,165 plants in this dataset
- Age among peers
- 91 of 1,973 dated gas plants in United States of America are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Madison Gas & Electric Co. All plants by this company →
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 43.0°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 62% 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: 84/100 — this site sits in the top third of the power plants we cover by heating degree-days.
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.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with thermal cycling the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #1671 largest gas power plant of 2165 in United States of America by capacity.
United States of America has 2165 gas power plants in this dataset, together about 789,950 MW of capacity.
Nearby power plants
- Blount Street · Gas · 100 MW · Wisconsin
- Capitol Heat and Power · Oil · 2 MW · Wisconsin
- Blount Street Station · Coal · 135 MW · Wisconsin
- Diesel Generators · Oil · 54 MW · Wisconsin
- UW Madison Charter Street Plant · Gas · 11 MW · Wisconsin
- West Campus Cogeneration Facility · Gas · 169.3 MW · Wisconsin
Location
Coordinates 43.0386, -89.3586 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Nine Springs?
Nine Springs is a 16.2 MW gas power plant in Wisconsin, United States of America, commissioned in 1965.
Who operates Nine Springs?
Nine Springs is operated by Madison Gas & Electric Co.
How much CO₂ does Nine Springs emit?
Nine Springs has modelled emissions of about 23,540 tonnes of CO₂ per year (Climate TRACE).