Algonquin Windsor Locks
Natural gas power plant · Hartford County, Connecticut
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Ahlstrom Power Windsor Locks LLC
- County
- Hartford County
- Generating units
- 3
- Share of state capacity
- 0.65%
- Rank among natural gas plants in Connecticut
- #10 of 47
- EIA plant code
- 10567
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GTG | Natural Gas Fired Combined Cycle | 40 MW | 35 MW | 1990 | Operating |
| STG | Natural Gas Fired Combined Cycle | 16 MW | 16 MW | 1990 | Operating |
| GTG2 | Natural Gas Fired Combined Cycle | 15 MW | 13 MW | 2012 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Connecticut
| Waterbury Generation | Natural gas | 96 MW |
| A L Pierce | Natural gas | 84 MW |
| Waterside Power, LLC | Other | 70 MW |
| Wheelabrator Bridgeport | Other | 67 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 71 MW solar plant and a 71 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Connecticut power plants · What Connecticut actually generates