Connecticut Interconnection Projects
interXdata tracks 2,433 interconnection projects in Connecticut representing 58,903 MW of requested capacity. The dominant technology by capacity is Gas. The most active counties are Capitol Planning Region, Western Connecticut Planning Region, South Central Connecticut Planning Region.
2,433Total projects
556Active
1,637Operational
235Withdrawn
58,903 MWRequested capacity
1,647 MWActive capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Gas | 206 | 21,715 MW |
| Other | 177 | 14,878 MW |
| Wind | 12 | 10,220 MW |
| Battery | 1,869 | 9,535 MW |
| Solar | 164 | 2,333 MW |
| Solar+Battery | 5 | 223 MW |
Counties
| County | Projects | Requested capacity |
|---|---|---|
| Capitol Planning Region | 439 | 45 MW |
| Western Connecticut Planning Region | 338 | 11 MW |
| South Central Connecticut Planning Region | 176 | 12 MW |
| Naugatuck Valley Planning Region | 167 | 10 MW |
| Hartford | 149 | 4,066 MW |
| New Haven | 135 | 9,138 MW |
| Southeastern Connecticut Planning Region | 133 | 7 MW |
| Fairfield | 132 | 9,328 MW |
| New London | 130 | 12,212 MW |
| Greater Bridgeport Planning Region | 114 | 5 MW |
| Lower Connecticut River Valley Planning Region | 100 | 4 MW |
| Northwest Hills Planning Region | 99 | 1 MW |
| Windham | 58 | 6,670 MW |
| Middlesex | 55 | 4,829 MW |
| Northeastern Connecticut Planning Region | 51 | 10 MW |
| Litchfield | 50 | 1,136 MW |
| Tolland | 33 | 125 MW |
| Putnam | 1 | 2 MW |
| Livingston | 1 | 20 MW |
| Fairfield & New Haven | 1 | 0 MW |
| Ellington | 1 | 6 MW |
Largest projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| Non-controllable objective ETU to enable 2400 MW injection | 1569 | — | 2,400.0 MW | withdrawn | New London, Connecticut |
| 1400 MW HVDC Line into Millstone | 891 | — | 1,400.0 MW | withdrawn | New London, Connecticut |
| Millstone | 566_3 | Other | 1,350.0 MW | operational | New London, Connecticut |
| Offshore Wind | 1488 | Wind | 1,275.0 MW | withdrawn | Connecticut |
| Offshore Wind | 1505 | Wind | 1,275.0 MW | withdrawn | Connecticut |
| Non-controllable objective ETU to enable additional 1200 MW (to QP1309) injection near Millstone sub | 1435 | — | 1,200.0 MW | withdrawn | New London, Connecticut |
| Offshore Wind Increase | 1060 | Wind | 1,200.0 MW | withdrawn | Connecticut |
| non-controllable objective ETU to enable 1200 MW injection near Millstone substation | 1309 | — | 1,200.0 MW | withdrawn | New London, Connecticut |
| Offshore Wind | 1058 | Wind | 1,200.0 MW | withdrawn | Connecticut |
| Offshore Wind | 927 | Wind | 1,200.0 MW | withdrawn | Connecticut |
| Offshore Wind CNR | 1485 | Wind | 1,200.0 MW | withdrawn | Connecticut |
| Offshore Wind | 893 | Wind | 1,200.0 MW | withdrawn | Connecticut |
| 1200 MW HVDC Line into Singer (Controllable) | 899 | — | 1,200.0 MW | withdrawn | Fairfield, Connecticut |
| Combined Cycle | 596 | Gas | 1,120.0 MW | withdrawn | Windham, Connecticut |
| 2400 controllable ETU - unidirectional | 1333 | — | 1,100.0 MW | withdrawn | Connecticut |
| Millstone | 566_2 | Other | 909.9 MW | operational | New London, Connecticut |
| Millstone 2 Upgrade7 | 99 | Other | 897.5 MW | operational | New London, Connecticut |
| Lake Road CNR Only (see Q534) | 604 | Gas | 882.0 MW | operational | Windham, Connecticut |
| Offshore Wind | 791 | Wind | 805.0 MW | withdrawn | Connecticut |
| Offshore Wind | 792 | Wind | 805.0 MW | withdrawn | Connecticut |
| Combined Cycle | 369 | Gas | 745.0 MW | withdrawn | Fairfield, Connecticut |
| CPV Towantic Energy Center | 384 | Gas | 745.0 MW | operational | New Haven, Connecticut |
| Combined Cycle | 277 | Gas | 695.0 MW | withdrawn | Fairfield, Connecticut |
| Combined Cycle | 388 | Gas | 680.0 MW | withdrawn | Fairfield, Connecticut |
| NTE Connecticut | 724 | Gas | 672.0 MW | withdrawn | Windham, Connecticut |
| Kleen Energy Project | 95 | Gas | 619.8 MW | operational | Middlesex, Connecticut |
| Bridgeport Energy PSS Tuning | 595 | Gas | 578.0 MW | operational | Fairfield, Connecticut |
| Combined Cycle | 598 | Gas | 563.0 MW | withdrawn | Windham, Connecticut |
| Meriden Gas Turbines | 222 | Gas | 510.0 MW | withdrawn | New Haven, Connecticut |
| PSEG Bridgeport Harbor CCGT Expansion | 412 | Gas | 509.6 MW | operational | Fairfield, Connecticut |
Top developers in Connecticut
| Developer (canonical) | Projects | Capacity |
|---|---|---|
| Earthlight Technologies, LLC | 335 | 8 MW |
| ConnectedSolutions | 328 | 4 MW |
| Tesla, Inc. | 199 | 2 MW |
| Posigen, CT | 159 | 1 MW |
| Venture Solar | 82 | 1 MW |
| Earth Smart Solar | 76 | 1 MW |
| SAVKAT, Inc. | 75 | 1 MW |
| Green Power Energy, LLC | 70 | 1 MW |
| Sunrun Inc. | 47 | 1 MW |
| Helio Solar LLC | 38 | 0 MW |
| West Electric LLC | 35 | 1 MW |
| Eastern CT Solar LLC | 31 | 0 MW |
| Aegis Solar Energy | 25 | 0 MW |
| Ion Solar Pros | 23 | 0 MW |
| CES Danbury LLC DBA Ross Solar Group | 21 | 0 MW |
Recent material changes
| Observed | Project | Field | Old | New |
|---|---|---|---|---|
| 2026-10-02 | Groton Flanders Road Landfill | new_project | — | active |
| 2026-09-02 | Putnam Meadow Solar Station | proposed_online_date | 2027-01-01 | 2027-03-01 |
Explore related data
Source last checked2026-07-31
Data last materially changed2026-10-11
Page data generated2026-10-11
Provenance: ct-ess-storage; U.S. EIA — Form EIA-860M generator inventory (operating + planned); isone-irtt; New York ISO — interconnection queue. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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