Ryegate Power Station — United States of America

Ryegate Power Station is a 21.5 MW waste power plant in New Hampshire, United States of America. It is operated by ENGIE. Based on reported annual generation of 131 GWh, it can supply roughly 37k homes. It ranks #4593 of 10,884 United States of America power plants by installed capacity. Commissioned in 1992, it is around 34 years old — long-established. In context, the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0051026.

Data provenance

Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.

capacity: WRI GPPD; fuel: WRI GPPD

In context: how this plant compares

At 21.5 MW, Ryegate Power Station is well above the median waste plant in United States of America (6.6 MW). Waste-to-energy plants burn municipal solid waste to generate electricity and heat, cutting landfill volume while recovering energy from residual waste.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Key facts

Load factor

70%, from 131 GWh of reported generation; the median for 506 waste plants in United States of America that report generation is 62%

Generation trend

146 GWh in 2013 and 131 GWh in 2019 (−10%)

Highest and lowest year

2018: 167 GWh; 2019: 131 GWh

Share of United States of America waste capacity

0.2% of 10,154 MW across 551 plants in this dataset

Age among peers

135 of 541 dated waste 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 ENGIE.

Local climate & thermal context

This waste plant recovers energy by combusting municipal or industrial waste. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 44.2°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 79% 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: 89/100 — this site sits in the top third of the power plants we cover by heating degree-days.

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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), 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 #143 largest waste power plant of 551 in United States of America by capacity.

United States of America has 551 waste power plants in this dataset, together about 10,154 MW of capacity.

Nearby power plants

• Dodge Falls Associates · Hydro · 5 MW · New Hampshire
• Mcindoes · Hydro · 10.4 MW · New Hampshire
• Boltonville Hydro Associates · Hydro · 1.1 MW · New Hampshire
• East Barnet · Hydro · 2.2 MW · Vermont
• Comerford · Hydro · 167.8 MW · Vermont
• S C Moore · Hydro · 195 MW · New Hampshire

Location

Coordinates 44.2131, -72.0572 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions