Waste power plant in Massachusetts, United States of America. Approximate location 41.8022, -70.7875.
WasteMassachusettsUnited States of AmericaCO₂ modelled
SEMASS Resource Recovery is a 98 MW waste power plant in Massachusetts, United States of America. It is operated by SEMASS Partnership. Based on reported annual generation of 584 GWh, it can supply roughly 167k homes. It ranks #2894 of 10,938 United States of America power plants by installed capacity. Commissioned in 1989, it is around 37 years old — long-established. Its modelled annual emissions are 826,080 t CO₂/yr (Climate TRACE), equivalent to about 193k cars driven for a year. 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 USA0050290.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.
capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel
At 98 MW, SEMASS Resource Recovery is well above the median waste plant in United States of America (7 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.
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; modelled emissions from Climate TRACE.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by SEMASS Partnership.
This waste plant recovers energy by combusting municipal or industrial waste. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 41.8°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 28% 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: 66/100 — this site sits in the mid 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.
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
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.
The #12 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.
Coordinates 41.8022, -70.7875 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
SEMASS Resource Recovery is a 98 MW source-record waste power plant in Massachusetts, United States of America, commissioned in 1989.
SEMASS Resource Recovery generates about 584 GWh of electricity per year.
Its output is enough to supply roughly 166,771 homes.
SEMASS Resource Recovery is operated by SEMASS Partnership.
SEMASS Resource Recovery has modelled emissions of about 826,080 tonnes of CO₂ per year (Climate TRACE).
