| Millstone (3) | New London | Operational | 1.35 GW | Nuclear | Dominion Energy Nuclear Conn Inc |
| Millstone (2) | New London | Operational | 909.9 MW | Nuclear | Dominion Energy Nuclear Conn Inc |
| New Haven Harbor (1) | New Haven | Operational | 460 MW | Oil | Generation Bridge II Connecticut, LLC |
| Montville Station (6) | New London | Operational | 414.9 MW | Oil | Montville Power LLC |
| Middletown (4) | Middlesex | Operational | 414.9 MW | Oil | Middletown Power LLC |
| Bridgeport Station (501) | Fairfield | Operational | 375.7 MW | Gas | Generation Bridge II Connecticut, LLC |
| Kleen Energy Systems Project (ST) | Middlesex | Operational | 295 MW | Gas | Kleen Energy Systems, LLC |
| Milford Power Project (CA01) | New Haven | Operational | 289 MW | Gas | Milford Power Co LLC |
| Milford Power Project (CA02) | New Haven | Operational | 289 MW | Gas | Milford Power Co LLC |
| CPV Towantic Energy Center (CTG1) | New Haven | Operational | 280.5 MW | Gas | CPV Towantic, LLC |
| CPV Towantic Energy Center (CTG2) | New Haven | Operational | 280.5 MW | Gas | CPV Towantic, LLC |
| CPV Towantic Energy Center (STG) | New Haven | Operational | 280.5 MW | Gas | CPV Towantic, LLC |
| Lake Road Generating Plant (U1) | Windham | Operational | 280 MW | Gas | Lake Road Generating Co LP |
| Lake Road Generating Plant (U2) | Windham | Operational | 280 MW | Gas | Lake Road Generating Co LP |
| Lake Road Generating Plant (U3) | Windham | Operational | 280 MW | Gas | Lake Road Generating Co LP |
| Elevate Middletown (ELVMT) | Middlesex | Active | 275 MW | Battery | Lighthouse Middletown, LLC |
| Middletown (3) | Middlesex | Operational | 239.4 MW | Gas | Middletown Power LLC |
| Bridgeport Station (502) | Fairfield | Operational | 200.6 MW | Gas | Generation Bridge II Connecticut, LLC |
| Broadleaf Solar (BLS) | Hartford | Active | 200 MW | Solar | Broadleaf Solar, LLC |
| Kleen Energy Systems Project (U1) | Middlesex | Operational | 199 MW | Gas | Kleen Energy Systems, LLC |
| Kleen Energy Systems Project (U2) | Middlesex | Operational | 199 MW | Gas | Kleen Energy Systems, LLC |
| Bridgeport Energy Project (GEN3) | Fairfield | Operational | 180 MW | Gas | Bridgeport Energy LLC |
| Bridgeport Energy Project (GEN1) | Fairfield | Operational | 170 MW | Gas | Bridgeport Energy LLC |
| Bridgeport Energy Project (GEN2) | Fairfield | Operational | 170 MW | Gas | Bridgeport Energy LLC |
| Middletown (2) | Middlesex | Operational | 113.6 MW | Gas | Middletown Power LLC |
| Waterbury Generation (10) | New Haven | Operational | 96 MW | Gas | Engie North America |
| A L Pierce (4) | New Haven | Operational | 84 MW | Gas | MPH AL Pierce, LLC |
| Montville Station (5) | New London | Operational | 75 MW | Gas | Montville Power LLC |
| Gravel Pit Solar, LLC (GPS04) | Hartford | Operational | 70 MW | Solar | Gravel Pit Solar, LLC |
| Pure Hedge LLC (FSS17) | Windham | Active | 70 MW | Solar | Pure Hedge LLC |
| Wheelabrator Bridgeport (GEN1) | Fairfield | Operational | 67 MW | Waste | Wheelabrator Environmental Systems |
| GenConn Middletown LLC (12) | Middlesex | Operational | 60.5 MW | Oil | GenConn Middletown LLC |
| GenConn Middletown LLC (13) | Middlesex | Operational | 60.5 MW | Oil | GenConn Middletown LLC |
| GenConn Middletown LLC (14) | Middlesex | Operational | 60.5 MW | Oil | GenConn Middletown LLC |
| GenConn Middletown LLC (15) | Middlesex | Operational | 60.5 MW | Oil | GenConn Middletown LLC |
| GenConn Devon LLC (15) | New Haven | Operational | 60.5 MW | Oil | GenConn Devon LLC |
| GenConn Devon LLC (16) | New Haven | Operational | 60.5 MW | Oil | GenConn Devon LLC |
| GenConn Devon LLC (17) | New Haven | Operational | 60.5 MW | Oil | GenConn Devon LLC |
| GenConn Devon LLC (18) | New Haven | Operational | 60.5 MW | Oil | GenConn Devon LLC |
| New Haven Harbor (2) | New Haven | Operational | 60.5 MW | Oil | Generation Bridge II Connecticut, LLC |
| New Haven Harbor (3) | New Haven | Operational | 60.5 MW | Oil | Generation Bridge II Connecticut, LLC |
| New Haven Harbor (4) | New Haven | Operational | 60.5 MW | Oil | Generation Bridge II Connecticut, LLC |
| Devon Station (11) | New Haven | Operational | 51 MW | Oil | Devon Power LLC |
| Devon Station (12) | New Haven | Operational | 51 MW | Oil | Devon Power LLC |
| Devon Station (13) | New Haven | Operational | 51 MW | Oil | Devon Power LLC |
| Devon Station (14) | New Haven | Operational | 51 MW | Oil | Devon Power LLC |
| Wallingford Energy (CTG1) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Wallingford Energy (CTG2) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Wallingford Energy (CTG3) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Wallingford Energy (CTG4) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Wallingford Energy (CTG5) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Wallingford Energy (CTG6) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Wallingford Energy (CTG7) | New Haven | Operational | 50 MW | Gas | Wallingford Energy LLC |
| Gravel Pit Solar, LLC (GPS03) | Hartford | Operational | 50 MW | Solar | Gravel Pit Solar, LLC |
| Quinebaug Solar (QBS) | Windham | Operational | 49.4 MW | Solar | Quinebaug Solar, LLC |
| KCE CT 1, LLC (CT1) | Windham | Active | 45 MW | Battery | Key Capture Energy |
| Plainfield Renewable Energy LLC (STG) | Windham | Operational | 43 MW | Biomass | Plainfield Renewable Energy, LLC |
| Algonquin Windsor Locks (GTG) | Hartford | Operational | 40 MW | Gas | Ahlstrom Power Windsor Locks LLC |
| Shepaug (1) | New Haven | Operational | 37.2 MW | Hydro | FirstLight Power Resources Services LLC |
| DWW Solar ll (DWWS) | Hartford | Operational | 36.9 MW | Solar | DWW Solar ll LLC |
| Pratt & Whitney (FT-8) | Hartford | Operational | 25.8 MW | Gas | United Technologies |
| Cos Cob (UN10) | Fairfield | Operational | 25 MW | Oil | Connecticut Jet Power LLC |
| Cos Cob (UN11) | Fairfield | Operational | 25 MW | Oil | Connecticut Jet Power LLC |
| Cos Cob (UN12) | Fairfield | Operational | 25 MW | Oil | Connecticut Jet Power LLC |
| Rocky River (CT) (3) | Litchfield | Operational | 24 MW | Pumped Storage | FirstLight Power Resources Services LLC |
| Waterside Power, LLC (4) | Fairfield | Operational | 23.2 MW | Oil | Waterside Power, LLC |
| Waterside Power, LLC (5) | Fairfield | Operational | 23.2 MW | Oil | Waterside Power, LLC |
| Waterside Power, LLC (7) | Fairfield | Operational | 23.2 MW | Oil | Waterside Power, LLC |
| Branford (UN10) | New Haven | Operational | 21.8 MW | Oil | Connecticut Jet Power LLC |
| Franklin Drive (UN19) | Litchfield | Operational | 21.8 MW | Oil | Connecticut Jet Power LLC |
| Torrington Terminal (UN10) | Litchfield | Operational | 21.8 MW | Oil | Connecticut Jet Power LLC |
| Cos Cob (UN13) | Fairfield | Operational | 20 MW | Oil | Connecticut Jet Power LLC |
| Cos Cob (un14) | Fairfield | Operational | 20 MW | Oil | Connecticut Jet Power LLC |
| Fusion Solar Center LLC (PV) | New London | Operational | 20 MW | Solar | Fusion Solar Centre, L.L.C |
| Woods Hill Solar (PV1) | Windham | Operational | 20 MW | Solar | Woods Hill Solar, LLC |
| Pure Hedge LLC (FSS13) | Windham | Active | 20 MW | Battery | Pure Hedge LLC |
| SR Litchfield (LITCH) | Litchfield | Operational | 19.8 MW | Solar | SR Litchfield, LLC |
| Nutmeg Solar (NUTMG) | Hartford | Operational | 19.6 MW | Solar | Nutmeg Solar LLC |
| Devon Station (10) | New Haven | Operational | 18.6 MW | Oil | Devon Power LLC |
| Tunnel (10) | New London | Operational | 18.5 MW | Oil | FirstLight Power Resources Services LLC |
| Middletown (10) | Middlesex | Operational | 18.5 MW | Oil | Middletown Power LLC |
| Covanta Southeastern Connecticut Company (GEN1) | New London | Operational | 18.3 MW | Waste | Covanta Southeastern Connecticut Company |
| Bridgeport Fuel Cell, LLC (1) | Fairfield | Operational | 16.6 MW | Gas | Bridgeport Fuel Cell, LLC |
| Rand Whitney CHP Plant (TG-1) | New London | Operational | 16.5 MW | Gas | Rand Whitney Containerboard L.P. |
| Covanta Bristol Energy (GEN1) | Hartford | Operational | 16.3 MW | Waste | Covanta Bristol Inc |
| Kimberly Clark-Unit 1,2,3 (GT100) | Litchfield | Operational | 16.1 MW | Gas | Kimberly-Clark Corporation |
| Kimberly Clark-Unit 1,2,3 (GT200) | Litchfield | Operational | 16.1 MW | Gas | Kimberly-Clark Corporation |
| Wallingford Solar (WS) | New Haven | Operational | 16.1 MW | Solar | Wallingford Renewable Energy, LLC |
| Algonquin Windsor Locks (STG) | Hartford | Operational | 16 MW | Gas | Ahlstrom Power Windsor Locks LLC |
| Algonquin Windsor Locks (GTG2) | Hartford | Operational | 15 MW | Gas | Ahlstrom Power Windsor Locks LLC |
| North Stonington Solar Center, LLC (PAWCA) | New London | Operational | 15 MW | Solar | Adapture Renewables, Inc. |
| Wheelabrator Lisbon (GEN1) | New London | Operational | 14.6 MW | Waste | Wheelabrator Environmental Systems |
| SR North Stonington (STONE) | New London | Operational | 12 MW | Solar | SR North Stonington, LLC |
| Pfizer Groton Plant (GT-1) | New London | Operational | 10 MW | Gas | Pfizer Inc |
| Pfizer Groton Plant (TG 3) | New London | Operational | 10 MW | Gas | Pfizer Inc |
| Pfizer Groton Plant (TG 4) | New London | Operational | 10 MW | Gas | Pfizer Inc |
| Generate Colchester Fuel Cells, LLC (GCFC) | New London | Operational | 10 MW | Gas | Generate Colchester Fuel Cells, LLC |
| Sikorsky Aircraft CHP (TG-1) | Fairfield | Operational | 9.2 MW | Gas | Sikorsky Aircraft Corporation |
| Stevenson (4) | Fairfield | Operational | 8 MW | Hydro | FirstLight Power Resources Services LLC |
| Pfizer Groton Plant (TG5) | New London | Operational | 7.5 MW | Gas | Pfizer Inc |
| Stevenson (1) | Fairfield | Operational | 7.5 MW | Hydro | FirstLight Power Resources Services LLC |
| Stevenson (2) | Fairfield | Operational | 7.5 MW | Hydro | FirstLight Power Resources Services LLC |
| Stevenson (3) | Fairfield | Operational | 7.5 MW | Hydro | FirstLight Power Resources Services LLC |
| UCONN Cogen Facility (CGT1) | Tolland | Operational | 6.9 MW | Gas | University of Connecticut |
| UCONN Cogen Facility (CGT2) | Tolland | Operational | 6.9 MW | Gas | University of Connecticut |
| UCONN Cogen Facility (CGT3) | Tolland | Operational | 6.9 MW | Gas | University of Connecticut |
| Foxwoods CoGen (CT1) | New London | Operational | 6.6 MW | Gas | Foxwoods Resort Casino |
| Foxwoods CoGen (CT2) | New London | Operational | 6.6 MW | Gas | Foxwoods Resort Casino |
| Hartford Hospital Cogeneration (GEN3) | Hartford | Operational | 6.2 MW | Gas | Cartier Energy, LLC |
| Hartford Hospital Cogeneration (GEN6) | Hartford | Active | 6 MW | Gas | Cartier Energy, LLC |
| UCONN Cogen Facility (STG1) | Tolland | Operational | 5 MW | Gas | University of Connecticut |
| Somers Solar Center, LLC (1) | Tolland | Operational | 5 MW | Solar | Onward Energy |
| Wind Colebrook South (WCS) | Litchfield | Operational | 5 MW | Wind | Wind Colebrook South |
| South Windsor Fuel Cell (SWFC5) | Hartford | Operational | 5 MW | Gas | South Energy Investments LLC |
| East Windsor Solar One (EWS1) | Hartford | Operational | 5 MW | Solar | DG Connecticut III, LLC |
| Southington Solar One (EWS1) | Hartford | Operational | 4.7 MW | Solar | DG Connecticut III, LLC |
| Frito Lay Incorporated (COGEN) | Windham | Operational | 4.6 MW | Gas | Frito Lay Incorporated Dayville |
| Fairfield University CHP Plant (CHP1) | Fairfield | Operational | 4.5 MW | Gas | Fairfield University |
| Danbury Hospital Cogen Plant (GEN1) | Fairfield | Operational | 4.3 MW | Gas | Danbury Hospital |
| Hartford Hospital Cogeneration (GEN2) | Hartford | Operational | 4.2 MW | Gas | Cartier Energy, LLC |
| Kimberly Clark-Unit 1,2,3 (GT300) | Litchfield | Operational | 4.1 MW | Gas | Kimberly-Clark Corporation |
| Derby Hydro (GEN1) | Fairfield | Operational | 4 MW | Hydro | McCallum Enterprises I LP |
| Derby Hydro (GEN2) | Fairfield | Operational | 4 MW | Hydro | McCallum Enterprises I LP |
| Rainbow (CT) (1) | Hartford | Operational | 4 MW | Hydro | Farmington River Power Company |
| Rainbow (CT) (2) | Hartford | Operational | 4 MW | Hydro | Farmington River Power Company |
| HSCo CHP (1) | Hartford | Operational | 4 MW | Gas | Cartier Energy, LLC |
| Antares-GRE 314 East Lyme LLC (GRE01) | New London | Operational | 4 MW | Solar | MN8 Energy LLC |
| Enfield Solar One (VCP07) | Hartford | Operational | 4 MW | Solar | Enfield Solar One, LLC |
| Norfolk Landfill Solar Project (NRFLK) | Litchfield | Operational | 4 MW | Solar | NJR Clean Energy Ventures Corporation |
| Raffia Road Solar Project (FLRFT) | Hartford | Operational | 4 MW | Solar | NJR Clean Energy Ventures Corporation |
| East Windsor Solar Two (VCP05) | Hartford | Active | 4 MW | Solar | East Windsor Solar Two, LLC |
| Putnam Meadow Solar Station (PTNM) | Windham | Active | 4 MW | Solar | Putnam Meadow Solar Station, LLC |
| East Windsor (EWNDR) | Hartford | Active | 4 MW | Solar | NJR Clean Energy Ventures Corporation |
| Amazon BDL4 (BDL4) | Hartford | Operational | 3.9 MW | Solar | Telyon AMZ Windsor LLC |
| Subase Microgrid Project (SFC1) | New London | Operational | 3.7 MW | Gas | Connecticut Mun Elec Engy Coop |
| Subase Microgrid Project (SFC2) | New London | Operational | 3.7 MW | Gas | Connecticut Mun Elec Engy Coop |
| TRS Fuel Cell (MMH1) | Fairfield | Operational | 3.7 MW | Gas | TRS Fuel Cell, LLC |
| Naval Sub Base New London Fuel Cell (MMH2) | New London | Operational | 3.7 MW | Gas | Groton Station Fuel Cell, LLC |
| Naval Sub Base New London Fuel Cell (MMH3) | New London | Operational | 3.7 MW | Gas | Groton Station Fuel Cell, LLC |
| Rocky River (CT) (1) | Litchfield | Operational | 3.5 MW | Pumped Storage | FirstLight Power Resources Services LLC |
| Rocky River (CT) (2) | Litchfield | Operational | 3.5 MW | Pumped Storage | FirstLight Power Resources Services LLC |
| CMEEC - Polaris Park Solar Hybrid (PV1) | New London | Operational | 3.5 MW | Solar | Tesla Inc. |
| CMEEC - Norwich Stott St Solar Hybrid (PV1) | New London | Operational | 3.5 MW | Solar | Tesla Inc. |
| Burlington Solar 1 (BS1) | Hartford | Operational | 3.5 MW | Solar | DG Connecticut III, LLC |
| UDR Glastonbury Fuel Cell (UDRFC) | Hartford | Operational | 3.4 MW | Gas | UIL Distributed Resources, LLC |
| Brass Mill Center (BMC) | New Haven | Operational | 3.4 MW | Solar | Brass Mill Center |
| Falls Village (1) | Litchfield | Operational | 3 MW | Hydro | FirstLight Power Resources Services LLC |
| Falls Village (2) | Litchfield | Operational | 3 MW | Hydro | FirstLight Power Resources Services LLC |
| Falls Village (3) | Litchfield | Operational | 3 MW | Hydro | FirstLight Power Resources Services LLC |
| Foxwoods CoGen (STG1) | New London | Operational | 3 MW | Gas | Foxwoods Resort Casino |
| Cellu Tissue (GEN1) | Hartford | Operational | 3 MW | Gas | Dunn Paper East Hartford, LLC |
| Bristol Solar One, LLC (BRIS1) | Hartford | Operational | 3 MW | Solar | DG Connecticut III, LLC |
| Woodstock Solar One (VCP19) | Windham | Active | 3 MW | Solar | VCP Realty, LLC |
| Glastonbury Solar One (GTBRY) | Hartford | Active | 3 MW | Solar | NJR Clean Energy Ventures Corporation |
| UI RCP New Haven Fuel Cell (NHFC) | New Haven | Operational | 2.8 MW | Gas | United Illuminating Co |
| UI RCP Bridgeport Seaside (BPFC) | Fairfield | Operational | 2.8 MW | Gas | United Illuminating Co |
| Pfizer Groton Fuel Cell (MM-24) | New London | Operational | 2.8 MW | Gas | Groton Fuel Cell 1 LLC |
| Pfizer Groton Fuel Cell (MM-25) | New London | Operational | 2.8 MW | Gas | Groton Fuel Cell 1 LLC |
| UI RCP Woodbridge FC (WBFC) | New Haven | Operational | 2.8 MW | Gas | United Illuminating Co |
| Derby Fuel Cell (MM45) | New Haven | Operational | 2.8 MW | Gas | Derby Fuel Cell LLC |
| Derby Fuel Cell (MM46) | New Haven | Operational | 2.8 MW | Gas | Derby Fuel Cell LLC |
| Derby Fuel Cell (MM47) | New Haven | Operational | 2.8 MW | Gas | Derby Fuel Cell LLC |
| Derby Fuel Cell (MM48) | New Haven | Operational | 2.8 MW | Gas | Derby Fuel Cell LLC |
| Derby Fuel Cell (MM49) | New Haven | Operational | 2.8 MW | Gas | Derby Fuel Cell LLC |
| Niagara Bottling - Bloomfield (NBBRM) | Hartford | Operational | 2.8 MW | Solar | Westbound Solar 3, LLC |
| Montville Station (10) | New London | Operational | 2.7 MW | Oil | Montville Power LLC |
| Montville Station (11) | New London | Operational | 2.7 MW | Oil | Montville Power LLC |
| Bridge Street 1 & 2 (BS1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Bridge Street 1 & 2 (BS2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Fort Hill 1, 2, 3 & 4 (FH1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Fort Hill 1, 2, 3 & 4 (FH2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Fort Hill 1, 2, 3 & 4 (FH3) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Fort Hill 1, 2, 3 & 4 (FH4) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Gary Court 1 & 2 (GC1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Gary Court 1 & 2 (GC2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Jewett City 1 (JC1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| LNG 1 & 2 (LNG1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| LNG 1 & 2 (LNG2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Lebanon Pines 1 & 2 (LP1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Lebanon Pines 1 & 2 (LP2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Water Treatment 1 & 2 (WT1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Water Treatment 1 & 2 (WT2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Backus Microgrid Project (BMP1) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Backus Microgrid Project (BMP2) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Backus Microgrid Project (BMP3) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| Backus Microgrid Project (BMP4) | New London | Operational | 2.6 MW | Oil | Connecticut Mun Elec Engy Coop |
| CMEEC - Bozrah (PV1) | New London | Operational | 2.5 MW | Solar | Tesla Inc. |
| Stamford Health (15) | Fairfield | Operational | 2.5 MW | Oil | Stamford Health Systems, Inc. |
| Stamford Health (16) | Fairfield | Operational | 2.5 MW | Oil | Stamford Health Systems, Inc. |
| Wesleyan University Cogen 1 (1) | Middlesex | Operational | 2.4 MW | Gas | Wesleyan University |
| Medtronic - New Haven (MDC02) | New Haven | Operational | 2.3 MW | Gas | Bloom Energy |
| UI RCP Bridgeport Seaside (BPPV) | Fairfield | Operational | 2.2 MW | Solar | United Illuminating Co |
| Medtronic - New Haven 2 (MDC04) | New Haven | Operational | 2.2 MW | Gas | Bloom Energy |
| Scotland Dam (1) | Windham | Operational | 2 MW | Hydro | FirstLight Power Resources Services LLC |
| Norwich WWTP (1) | New London | Operational | 2 MW | Oil | City of Norwich - (CT) |
| Norden 1-3 (NORD1) | Fairfield | Operational | 2 MW | Oil | Third Taxing District of Norwalk |
| Norden 1-3 (NORD2) | Fairfield | Operational | 2 MW | Oil | Third Taxing District of Norwalk |
| Norden 1-3 (NORD3) | Fairfield | Operational | 2 MW | Oil | Third Taxing District of Norwalk |
| Canis Major Solar Farm (S1980) | Hartford | Operational | 2 MW | Solar | LSE Canis Major LLC |
| Digital Fairfield (DGR01) | Fairfield | Operational | 2 MW | Gas | Bloom Energy |
| Sydney Solar (SYDN) | Windham | Operational | 2 MW | Solar | Ecos Energy LLC |
| Dickinson Solar (CT) (DCKN) | Windham | Operational | 2 MW | Solar | Ecos Energy LLC |
| Stamford Health (FC) | Fairfield | Operational | 2 MW | Gas | Stamford Health Systems, Inc. |
| Torrington Solar One, LLC (TORS1) | Litchfield | Operational | 2 MW | Solar | DG Connecticut III, LLC |
| Watertown Solar One, LLC (WTRS1) | Litchfield | Operational | 2 MW | Solar | DG Connecticut III, LLC |
| Barrow Solar (BARRO) | Tolland | Operational | 2 MW | Solar | Ecos Energy LLC |
| Norcap South (NOS17) | Hartford | Operational | 2 MW | Solar | LSE Coma Berenices LLC |
| Norcap North (NON17) | Hartford | Operational | 2 MW | Solar | LSE Canes Venatici LLC |
| Powder Hill (POW20) | Hartford | Operational | 2 MW | Solar | LSE Delphinus LLC |
| Platt Hill (PLA22) | Litchfield | Operational | 2 MW | Solar | LSE Pictor LLC |
| Sand Road (SAN21) | Litchfield | Operational | 2 MW | Solar | LSE Phoenix LLC |
| Bunce (BUN23) | Litchfield | Operational | 2 MW | Solar | LSE Indus LLC |
| Ellington - 277 Sadds Mill (10634) | Tolland | Operational | 2 MW | Solar | Onyx Asset Services Group |
| CP East Hampton I & II Solar (EHAMP) | Middlesex | Operational | 2 MW | Solar | NJR Clean Energy Ventures Corporation |
| Bradley Energy Center (UNIT4) | Hartford | Operational | 1.9 MW | Gas | Ameresco Select Inc |
| Yale New Haven - New London (YNH01) | New London | Operational | 1.8 MW | Gas | Bloom Energy |
| Barrett Farm Solar - Phase I (10263) | Windham | Operational | 1.7 MW | Solar | Onyx Asset Services Group |
| Goodwin Hydroelectric (G1) | Hartford | Operational | 1.6 MW | Hydro | Metropolitan Dist of Hartford |
| Goodwin Hydroelectric (G2) | Hartford | Operational | 1.6 MW | Hydro | Metropolitan Dist of Hartford |
| North Haven Solar One (VCP11) | New Haven | Operational | 1.6 MW | Solar | North Haven Solar One, LLC |
| Kinneytown New Old (GEN2) | New Haven | Operational | 1.5 MW | Hydro | Hydroland Omega LLC |
| Bradley Energy Center (UNIT1) | Hartford | Operational | 1.5 MW | Gas | Ameresco Select Inc |
| Becton Canaan (PH1GR) | Litchfield | Operational | 1.5 MW | Solar | DG Northeast 1, LLC |
| FedEx Middletown (VCP15) | Middlesex | Operational | 1.5 MW | Solar | VCP Realty, LLC |
| Dynamic Energy CT STAG (P5876) | New Haven | Operational | 1.5 MW | Solar | Milford Pepes Farm Road Solar LLC |
| Hartford Hospital Cogeneration (GEN4) | Hartford | Operational | 1.4 MW | Gas | Cartier Energy, LLC |
| CCSU Fuel Cell Project (CCSU) | Hartford | Operational | 1.4 MW | Gas | New Britain Renewable Energy, LLC |
| Tenth Street (1) | New London | Operational | 1.4 MW | Hydro | City of Norwich - (CT) |
| Pepperidge Farm Bloomfield (FCC) | Hartford | Operational | 1.4 MW | Gas | Pepperidge Farm, Inc.- Bloomfield |
| Trinity College Fuel Cell (MB-22) | Hartford | Operational | 1.4 MW | Gas | AEP Onsite Partners, LLC |
| UB Fuel Cell (UBFC1) | Fairfield | Operational | 1.4 MW | Gas | UB Fuel Cell |
| Quinebaug Lower Project (UI) | Windham | Operational | 1.3 MW | Hydro | Quinebaug Associates LLC |
| CCSU Co-Gen-STBY Gen (EC#1) | Hartford | Operational | 1.3 MW | Gas | Central Connecticut State University |
| CCSU Co-Gen-STBY Gen (EC#2) | Hartford | Operational | 1.3 MW | Gas | Central Connecticut State University |
| CMEEC - Rogers Rd Solar (PV1) | New London | Operational | 1.3 MW | Solar | Tesla Inc. |
| Bulls Bridge (1) | Litchfield | Operational | 1.2 MW | Hydro | FirstLight Power Resources Services LLC |
| Bulls Bridge (2) | Litchfield | Operational | 1.2 MW | Hydro | FirstLight Power Resources Services LLC |
| Bulls Bridge (3) | Litchfield | Operational | 1.2 MW | Hydro | FirstLight Power Resources Services LLC |
| Bulls Bridge (4) | Litchfield | Operational | 1.2 MW | Hydro | FirstLight Power Resources Services LLC |
| Bulls Bridge (5) | Litchfield | Operational | 1.2 MW | Hydro | FirstLight Power Resources Services LLC |
| Bulls Bridge (6) | Litchfield | Operational | 1.2 MW | Hydro | FirstLight Power Resources Services LLC |
| Bradley Energy Center (UNIT2) | Hartford | Operational | 1.2 MW | Gas | Ameresco Select Inc |
| Bradley Energy Center (UNIT3) | Hartford | Operational | 1.2 MW | Gas | Ameresco Select Inc |
| Pepperidge Farm Bloomfield (FCB) | Hartford | Operational | 1.2 MW | Gas | Pepperidge Farm, Inc.- Bloomfield |
| ALDI DC 2 (ADC2) | Hartford | Operational | 1.2 MW | Solar | EnterSolar |
| Connecticut College (CNC00) | New London | Operational | 1.2 MW | Gas | Bloom Energy |
| Town of Branford (PV1) | New Haven | Operational | 1.1 MW | Solar | Tesla Inc. |
| Tunnel (1) | New London | Operational | 1 MW | Hydro | FirstLight Power Resources Services LLC |
| Tunnel (2) | New London | Operational | 1 MW | Hydro | FirstLight Power Resources Services LLC |
| Advance Stores Company, Inc (PV1) | Hartford | Operational | 1 MW | Solar | Tesla Inc. |
| Conn Mun Electric Energy Coop (PV1) | New London | Operational | 1 MW | Solar | Tesla Inc. |
| CMEEC - Navy NE Trident (PV1) | New London | Operational | 1 MW | Solar | Tesla Inc. |
| Stafford MS Ground Mount Community Solar (MS1) | Tolland | Operational | 1 MW | Solar | Town of Stafford - (CT) |
| Stafford MS Ground Mount Community Solar (MS2) | Tolland | Operational | 1 MW | Solar | Town of Stafford - (CT) |
| Hartford Landfill Solar EGF (PV1) | Hartford | Operational | 1 MW | Solar | Materials Innovation Recycling Authority |
| Canis Minor Solar Farm (B1000) | Litchfield | Operational | 1 MW | Solar | LSE Canis Minor LLC |
| Town of Rocky Hill PV CSG (PV1) | Hartford | Operational | 1 MW | Solar | Tesla Inc. |
| Town of Rocky Hill PV CSG (PV2) | Hartford | Operational | 1 MW | Solar | Tesla Inc. |
| Town of Rocky Hill PV CSG (PV3) | Hartford | Operational | 1 MW | Solar | Tesla Inc. |
| Franklin Solar (FRANK) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Wilson Solar (WILSN) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Jefferson Solar (JEFRS) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Hamilton Solar (HAMLT) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Adams Solar (ADAMS) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Manchester Community College East (10307) | Hartford | Operational | 1 MW | Solar | Onyx Asset Services Group |
| Manchester Community College North (10308) | Hartford | Operational | 1 MW | Solar | Onyx Asset Services Group |
| Sherman Solar (SHRM) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Jackson Solar (CT) (JACK) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| Plainfield Solar 2 (PLFD2) | Windham | Operational | 1 MW | Solar | Ecos Energy LLC |
| Ticket Network South Windsor (TNSW) | Hartford | Operational | 1 MW | Solar | EnterSolar |
| Corbin Russwin Phase 3 Berlin (CRP3B) | Hartford | Operational | 1 MW | Solar | EnterSolar |
| CP Middletown Solar I LLC (CPMI1) | Middlesex | Operational | 1 MW | Solar | Green Street Power Partners |
| CP Middletown Solar II LLC (CPMI2) | Middlesex | Operational | 1 MW | Solar | Green Street Power Partners |
| Amazon BDL3 Solar Project (BLD3) | New Haven | Operational | 1 MW | Solar | Solar Star Prime 1 LLC |
| Blair Solar (BLAIR) | Tolland | Operational | 1 MW | Solar | Ecos Energy LLC |
| Madison Solar (MADIS) | Tolland | Operational | 1 MW | Solar | Ecos Energy LLC |
| Few Solar (FEW) | Tolland | Operational | 1 MW | Solar | Ecos Energy LLC |
| Plainfield Solar 1 (PLFD1) | Windham | Operational | 1 MW | Solar | Ecos Energy LLC |
| FDX010.0 FedEx Fuel Cell (FDX10) | Middlesex | Operational | 1 MW | Gas | 2016 ESA Project Company, LLC |
| Clinton Solar (CLINT) | New London | Operational | 1 MW | Solar | Ecos Energy LLC |
| McHenry Solar (MCHEN) | Windham | Operational | 1 MW | Solar | Ecos Energy LLC |
| Park Solar (PARK) | New Haven | Operational | 1 MW | Solar | Ecos Energy LLC |
| Benz Solar 1 (BENZ1) | New Haven | Operational | 1 MW | Solar | Ecos Energy LLC |
| Benz Solar 2 (BENZ2) | New Haven | Operational | 1 MW | Solar | Ecos Energy LLC |
| New Milford Gas Recovery (GEN2) | Litchfield | Operational | 0.8 MW | Landfill, Gas | WM Renewable Energy LLC |
| New Milford Gas Recovery (GEN4) | Litchfield | Operational | 0.8 MW | Landfill, Gas | WM Renewable Energy LLC |
| Kinneytown New Old (GEN1) | New Haven | Operational | 0.8 MW | Hydro | Hydroland Omega LLC |
| Quinebaug Lower Project (U2) | Windham | Operational | 0.8 MW | Hydro | Quinebaug Associates LLC |
| CMEEC - Polaris Park Solar Hybrid (BA1) | New London | Operational | 0.8 MW | Battery | Tesla Inc. |
| CMEEC - Norwich Stott St Solar Hybrid (BA1) | New London | Operational | 0.8 MW | Battery | Tesla Inc. |
| IKEA New Haven Rooftop PV & Fuel Cell (213PV) | New Haven | Operational | 0.8 MW | Solar | IKEA Property Inc |
| Stamford Health (4) | Fairfield | Operational | 0.8 MW | Oil | Stamford Health Systems, Inc. |
| Stamford Health (5) | Fairfield | Operational | 0.8 MW | Oil | Stamford Health Systems, Inc. |
| Emerald Gardens PKI, LLC (EPKI1) | Fairfield | Operational | 0.8 MW | Solar | Emerald Gardens PKI, LLC |
| Emerald Gardens PKI, LLC (EPKI2) | Fairfield | Operational | 0.8 MW | Solar | Emerald Gardens PKI, LLC |
| Stamford Health Tully Health Center (G1) | Fairfield | Operational | 0.8 MW | Oil | Stamford Health Tully Health Center |
| CCSU Co-Gen-STBY Gen (MEMH) | Hartford | Operational | 0.7 MW | Oil | Central Connecticut State University |
| Stamford Health Tully Health Center (FC1) | Fairfield | Operational | 0.7 MW | Gas | Stamford Health Tully Health Center |
| Sikorsky Aircraft CHP (STG-1) | Fairfield | Operational | 0.6 MW | Gas | Sikorsky Aircraft Corporation |
| Becton Canaan (PH1RF) | Litchfield | Operational | 0.5 MW | Solar | DG Northeast 1, LLC |
| Becton Canaan (PH2RF) | Litchfield | Operational | 0.5 MW | Solar | DG Northeast 1, LLC |
| Stamford Health (13) | Fairfield | Operational | 0.5 MW | Oil | Stamford Health Systems, Inc. |
| Stamford Health (7) | Fairfield | Operational | 0.5 MW | Oil | Stamford Health Systems, Inc. |
| Taftville (1) | New London | Operational | 0.4 MW | Hydro | FirstLight Power Resources Services LLC |
| Stamford Health (1) | Fairfield | Operational | 0.4 MW | Oil | Stamford Health Systems, Inc. |
| Stamford Health (14) | Fairfield | Operational | 0.4 MW | Oil | Stamford Health Systems, Inc. |
| Derby Hydro (GEN3) | Fairfield | Operational | 0.3 MW | Hydro | McCallum Enterprises I LP |
| Derby Hydro (GEN4) | Fairfield | Operational | 0.3 MW | Hydro | McCallum Enterprises I LP |
| Taftville (2) | New London | Operational | 0.3 MW | Hydro | FirstLight Power Resources Services LLC |
| Taftville (3) | New London | Operational | 0.3 MW | Hydro | FirstLight Power Resources Services LLC |
| Taftville (4) | New London | Operational | 0.3 MW | Hydro | FirstLight Power Resources Services LLC |
| Taftville (5) | New London | Operational | 0.3 MW | Hydro | FirstLight Power Resources Services LLC |
| Quinebaug Lower Project (5-M) | Windham | Operational | 0.3 MW | Hydro | Quinebaug Associates LLC |
| CCSU Co-Gen-STBY Gen (GRND) | Hartford | Operational | 0.3 MW | Oil | Central Connecticut State University |
| IKEA New Haven Rooftop PV & Fuel Cell (213FC) | New Haven | Operational | 0.3 MW | Gas | IKEA Property Inc |
| Quinebaug Lower Project (MF) | Windham | Operational | 0.1 MW | Hydro | Quinebaug Associates LLC |
| Sikorsky Aircraft CHP (PV-1) | Fairfield | Operational | 0.1 MW | Solar | Sikorsky Aircraft Corporation |