| Middletown | Middletown | Middlesex County | 1,028 MW | Middletown Power Llc |
| Cpv Towantic Energy Center | Oxford | New Haven County | 842 MW | Cpv Towantic, Llc |
| Lake Road Generating Plant | Dayville | Windham County | 840 MW | Lake Road Generating Co Lp |
| Kleen Energy Systems Project | Middletown | Middlesex County | 693 MW | Kleen Energy Systems, Llc |
| Milford Power Project | Milford | New Haven County | 578 MW | Milford Power Co Llc |
| Bridgeport Station | Bridgeport | Fairfield County | 576 MW | Generation Bridge Ii Connecticut, Llc |
| Bridgeport Energy Project | Bridgeport | Fairfield County | 520 MW | Bridgeport Energy Llc |
| Wallingford Energy | Wallingford | New Haven County | 350 MW | Wallingford Energy Llc |
| Waterbury Generation | Waterbury | New Haven County | 96 MW | Engie North America |
| A L Pierce | Wallingford | New Haven County | 84 MW | Mph Al Pierce, Llc |
| Algonquin Windsor Locks | Windsor Locks | Hartford County | 71 MW | Ahlstrom Power Windsor Locks Llc |
| Pfizer Groton Plant | Groton | New London County | 38 MW | Pfizer Inc |
| Kimberly Clark-Unit 1,2,3 | New Milford | Litchfield County | 36 MW | Kimberly-Clark Corporation |
| Pratt & Whitney | East Hartford | Hartford County | 26 MW | United Technologies |
| Uconn Cogen Facility | Storrs | Tolland County | 26 MW | University Of Connecticut |
| Bridgeport Fuel Cell, Llc | Bridgeport | Fairfield County | 17 MW | Bridgeport Fuel Cell, Llc |
| Rand Whitney Chp Plant | Montville | New London County | 17 MW | Rand Whitney Containerboard L.p. |
| Foxwoods Cogen | Mashantucket | New London County | 16 MW | Foxwoods Resort Casino |
| Derby Fuel Cell | Derby | New Haven County | 14 MW | Derby Fuel Cell Llc |
| Hartford Hospital Cogeneration | Hartford | Hartford County | 12 MW | Cartier Energy, Llc |
| Generate Colchester Fuel Cells, Llc | Colchester | New London County | 10 MW | Generate Colchester Fuel Cells, Llc |
| Sikorsky Aircraft Chp | Stratford | Fairfield County | 10 MW | Sikorsky Aircraft Corporation |
| Subase Microgrid Project | Groton | New London County | 7 MW | Connecticut Mun Elec Engy Coop |
| Naval Sub Base New London Fuel Cell | Groton | New London County | 7 MW | Groton Station Fuel Cell, Llc |
| Bradley Energy Center | Windsor Locks | Hartford County | 6 MW | Ameresco Select Inc |
| Pfizer Groton Fuel Cell | Groton | New London County | 6 MW | Groton Fuel Cell 1 Llc |
| Ui Rcp Bridgeport Seaside | Bridgeport | Fairfield County | 5 MW | United Illuminating Co |
| South Windsor Fuel Cell | South Windsor | Hartford County | 5 MW | South Energy Investments Llc |
| Frito Lay Incorporated | Dayville | Windham County | 5 MW | Frito Lay Incorporated Dayville |
| Fairfield University Chp Plant | Fairfield | Fairfield County | 5 MW | Fairfield University |
| Danbury Hospital Cogen Plant | Danbury | Fairfield County | 4 MW | Danbury Hospital |
| Hsco Chp | Hartford | Hartford County | 4 MW | Cartier Energy, Llc |
| Trs Fuel Cell | Danbury | Fairfield County | 4 MW | Trs Fuel Cell, Llc |
| Ccsu Co-Gen-Stby Gen | New Britain | Hartford County | 4 MW | Central Connecticut State University |
| Udr Glastonbury Fuel Cell | Glastonbury | Hartford County | 3 MW | Uil Distributed Resources, Llc |
| Cellu Tissue | East Hartford | Hartford County | 3 MW | Dunn Paper East Hartford, Llc |
| Norwalk Hospital Plant | Norwalk | Fairfield County | 3 MW | Norwalk Hospital |
| Ui Rcp New Haven Fuel Cell | New Haven | New Haven County | 3 MW | United Illuminating Co |
| Ui Rcp Woodbridge Fc | Woodbridge | New Haven County | 3 MW | United Illuminating Co |
| Pepperidge Farm Bloomfield | Bloomfield | Hartford County | 3 MW | Pepperidge Farm, Inc.- Bloomfield |
| Wesleyan University Cogen 1 | Middletown | Middlesex County | 2 MW | Wesleyan University |
| Medtronic - New Haven | North Haven | New Haven County | 2 MW | Bloom Energy |
| Medtronic - New Haven 2 | North Haven | New Haven County | 2 MW | Bloom Energy |
| Digital Fairfield | Trumbull | Fairfield County | 2 MW | Bloom Energy |
| Yale New Haven - New London | New London | New London County | 2 MW | Bloom Energy |
| Ccsu Fuel Cell Project | New Britain | Hartford County | 1 MW | New Britain Renewable Energy, Llc |
| Trinity College Fuel Cell | Hartford | Hartford County | 1 MW | Aep Onsite Partners, Llc |
| Ub Fuel Cell | Bridgeport | Fairfield County | 1 MW | Ub Fuel Cell |
| Connecticut College | New London | New London County | 1 MW | Bloom Energy |
| Ibm Southbury | Southbury | New Haven County | 1 MW | Bloom Energy |
| Ikea New Haven Rooftop Pv & Fuel Cell | New Haven | New Haven County | 1 MW | Ikea Property Inc |
| Fdx010.0 Fedex Fuel Cell | Middletown | Middlesex County | 1 MW | 2016 Esa Project Company, Llc |
| Cjts Energy Center | Middletown | Middlesex County | 0 MW | Ameresco Select Inc |