Pfizer Groton Plant
Natural gas power plant · New London County, Connecticut
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Pfizer Inc
- County
- New London County
- Generating units
- 4
- Share of state capacity
- 0.34%
- Rank among natural gas plants in Connecticut
- #11 of 47
- EIA plant code
- 54236
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT-1 | Natural Gas Fired Combustion Turbine | 10 MW | 9.5 MW | 2009 | Operating |
| TG 3 | Natural Gas Steam Turbine | 10 MW | 10 MW | 1952 | Operating |
| TG 4 | Natural Gas Steam Turbine | 10 MW | 5.0 MW | 1994 | Operating |
| TG5 | Natural Gas Steam Turbine | 7.5 MW | 7.5 MW | 2001 | 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
| Quinebaug Solar | Solar | 49 MW |
| Plainfield Renewable Energy LLC | Other | 43 MW |
| Shepaug | Hydro | 37 MW |
| DWW Solar ll | Solar | 37 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 38 MW solar plant and a 38 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