Power plants in Connecticut emit a combined 10.9M metric tons of CO₂ per year. The table below ranks the top emitters — predominantly coal and natural gas plants. Emission rates vary widely even within the same fuel type: efficient combined-cycle gas plants produce roughly 900 lb CO₂/MWh, while older coal plants can exceed 2,200 lb/MWh.
Emissions data comes from the EPA eGRID program. Zero-emission sources (nuclear, solar, wind, hydro) are excluded from this ranking. For methodology details, see the methodology page.
PowerPlantsNearMe.com. (2026). Most Polluting Power Plants in Connecticut. Derived from EIA Form 860, EIA Form 923, and EPA eGRID. Retrieved from https://powerplantsnearme.com/most-polluting-power-plants/connecticut
Click the citation to select it for copying. For bulk data, see the data downloads page.