| 1 | MillstoneNuclear | | 2,260 | 16,709 | 84.4% | Dominion Energy Nuclear Conn Inc |
| 2 | Montville StationOil | | 490 | 133 | 3.1% | Montville Power LLC |
| 3 | Pfizer Groton PlantNatural gas | | 38 | 75.0 | 22.8% | Pfizer Inc |
| 4 | Fusion Solar Center LLCSolar | | 20 | 38.9 | 22.2% | Fusion Solar Centre, L.L.C |
| 5 | Covanta Southeastern Connecticut CompanyMunicipal solid waste | | 18 | 116 | 72.6% | Covanta Southeastern Connecticut Company |
| 6 | Rand Whitney CHP PlantNatural gas | | 17 | 133 | 92.3% | Rand Whitney Containerboard L.P. |
| 7 | Foxwoods CoGenNatural gas | | 16 | 10.8 | 7.6% | Foxwoods Resort Casino |
| 8 | North Stonington Solar Center, LLCSolar | | 15 | 31.7 | 24.1% | Adapture Renewables, Inc. |
| 9 | Wheelabrator LisbonMunicipal solid waste | | 15 | 99.8 | 78.0% | Wheelabrator Environmental Systems |
| 10 | SR North StoningtonSolar | | 12 | 15.0 | 14.2% | SR North Stonington, LLC |
| 11 | Fort Hill 1, 2, 3 & 4Oil | | 10 | 0.6 | 0.6% | Connecticut Mun Elec Engy Coop |
| 12 | Backus Microgrid ProjectOil | | 10 | 0.6 | 0.7% | Connecticut Mun Elec Engy Coop |
| 13 | Generate Colchester Fuel Cells, LLCNatural gas | | 10 | 72.4 | 82.6% | Generate Colchester Fuel Cells, LLC |
| 14 | Subase Microgrid ProjectNatural gas | | 7.4 | 29.6 | 45.7% | Connecticut Mun Elec Engy Coop |
| 15 | Naval Sub Base New London Fuel CellNatural gas | | 7.4 | 29.9 | 46.1% | Groton Station Fuel Cell, LLC |
| 16 | Pfizer Groton Fuel CellNatural gas | | 5.6 | 36.2 | 73.9% | Groton Fuel Cell 1 LLC |
| 17 | Bridge Street 1 & 2Oil | | 5.2 | 0.5 | 1.0% | Connecticut Mun Elec Engy Coop |
| 18 | Gary Court 1 & 2Oil | | 5.2 | 0.4 | 0.8% | Connecticut Mun Elec Engy Coop |
| 19 | LNG 1 & 2Oil | | 5.2 | 0.4 | 0.8% | Connecticut Mun Elec Engy Coop |
| 20 | Lebanon Pines 1 & 2Oil | | 5.2 | 0.4 | 0.8% | Connecticut Mun Elec Engy Coop |
| 21 | Water Treatment 1 & 2Oil | | 5.2 | 0.4 | 0.9% | Connecticut Mun Elec Engy Coop |
| 22 | North Franklin SolarSolar | | 5.0 | 0.0 | – | NJR Clean Energy Ventures Corporation |
| 23 | CMEEC - Polaris Park Solar HybridSolar | | 4.3 | 4.5 | 14.9% | Tesla Inc. |
| 24 | CMEEC - Norwich Stott St Solar HybridSolar | | 4.3 | 3.6 | 11.8% | Tesla Inc. |
| 25 | Antares-GRE 314 East Lyme LLCSolar | | 4.0 | 4.7 | 13.4% | MN8 Energy LLC |
| 26 | Wyre Wynd Hydroelectric ProjectHydro | | 2.8 | – | – | Relevate Power Management LLC |
| 27 | Jewett City 1Oil | | 2.6 | 0.1 | 0.6% | Connecticut Mun Elec Engy Coop |
| 28 | CMEEC - BozrahSolar | | 2.5 | 3.1 | 14.2% | Tesla Inc. |
| 29 | TunnelHydro | | 2.0 | 5.9 | 3.3% | FirstLight Power Resources Services LLC |
| 30 | Norwich WWTPOil | | 2.0 | 0.0 | – | City of Norwich - (CT) |
| 31 | Yale New Haven - New LondonNatural gas | | 1.8 | 14.0 | 88.9% | Bloom Energy |
| 32 | TaftvilleHydro | | 1.6 | 2.2 | 16.0% | FirstLight Power Resources Services LLC |
| 33 | Tenth StreetHydro | | 1.4 | 1.9 | 15.8% | City of Norwich - (CT) |
| 34 | CMEEC - Rogers Rd SolarSolar | | 1.3 | 1.5 | 13.4% | Tesla Inc. |
| 35 | Connecticut CollegeNatural gas | | 1.2 | 10.1 | 96.4% | Bloom Energy |
| 36 | Conn Mun Electric Energy CoopSolar | | 1.0 | 1.2 | 14.2% | Tesla Inc. |
| 37 | CMEEC - Navy NE TridentSolar | | 1.0 | 1.2 | 13.7% | Tesla Inc. |
| 38 | Franklin Solar (CT)Solar | | 1.0 | 1.6 | 18.0% | Ecos Energy LLC |
| 39 | Wilson Solar (CT)Solar | | 1.0 | 1.6 | 18.0% | Ecos Energy LLC |
| 40 | Jefferson Solar (CT)Solar | | 1.0 | 1.6 | 17.9% | Ecos Energy LLC |
| 41 | Hamilton SolarSolar | | 1.0 | 1.6 | 18.0% | Ecos Energy LLC |
| 42 | Adams SolarSolar | | 1.0 | 1.6 | 18.0% | Ecos Energy LLC |
| 43 | Sherman SolarSolar | | 1.0 | 1.6 | 17.8% | Ecos Energy LLC |
| 44 | Jackson Solar (CT)Solar | | 1.0 | 1.6 | 17.7% | Ecos Energy LLC |
| 45 | Clinton SolarSolar | | 1.0 | 1.7 | 19.1% | Ecos Energy LLC |
