Connecticut
Natural gas accounted for 56% of generation in Connecticut over the 12 months to July 2026.
Where they are
Every announced project in Connecticut with a recorded location; 15 sites.
Natural gas56%Nuclear37%Solar6%Other (<2.5% each)1%
| Fuel | GWh | Share | YoY |
|---|---|---|---|
| Natural gas | 25,496 | 56.0% | ↓ 2.0 |
| Nuclear | 16,910 | 37.2% | ↑ 1.0 |
| Solar | 2,805 | 6.2% | ↑ 1.0 |
| Hydro | 291 | 0.6% | – |
| Wind | 10 | 0.0% | – |
13-month trend
Natural gas
Nuclear
Solar
Hydro
Other
Hub power prices against a national gas-cost benchmark; not a state margin.
What’s standing
The 8 largest of 317 operating generators; 11.0 GW total capacity.
- MillstoneNuclear · Dominion Energy Nuclear Conn Inc1.4 GW1986
- MillstoneNuclear · Dominion Energy Nuclear Conn Inc0.9 GW1975
- New Haven SteamOther · Generation Bridge II Connecticut, LLC0.5 GW1975
- Montville StationOther · Montville Power LLC0.4 GW1971
- MiddletownOther · Middletown Power LLC0.4 GW1973
- Bridgeport Station, unit CC1Natural gas · Generation Bridge II Connecticut, LLC0.4 GW2019
- Kleen Energy Systems, unit CC01Natural gas · Kleen Energy Systems, LLC0.3 GW2011
- Milford Power ProjectNatural gas · Milford Power Co LLC0.3 GW2004
On the drawing board
Connecticut has 11.0 GW standing. Another 2 MW is on the board by 2026: 2 MW under construction.
Built since July 2026
- Mansfield LandfillStanding2 MW2026
- Windsor LocksUnder construction2 MW2026
Connecticut's announced projects could add 600 GWh a year by 2031. Our projection includes 410 GWh after applying completion factors based on project status.
Connecticut in the news
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