37.5 MW Natural Gas Fired Combustion Turbine (10 MW) + Natural Gas Steam Turbine (28 MW) operating in New London, CT — ISO New England Inc.
37.5 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Natural Gas Steam Turbine
1952
Operating Since
Coordinates
41.3315, -72.0786
County
New London, CT
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Pfizer Inc | — | — |
| Owner(s) | Pfizer Inc | — | — |
| Status | Operating | — | — |
The Pfizer Groton Plant, located in New London County, Connecticut, is a 37.5 MW hybrid power plant owned and operated by Pfizer Inc. The plant began operating in 1952 and utilizes natural gas as its primary fuel source. It consists of four generators employing both natural gas-fired combustion turbine and natural gas steam turbine technologies.
The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In the most recent year with available data, the Pfizer Groton Plant generated 75,037 MWh of electricity, achieving a capacity factor of 22.9%. The plant is ranked as the 12th largest in Connecticut out of 49 power plants, and nationally it is ranked 1201 out of 1963.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
34.5 kV
Regulatory Status
NR
Entity Type
Commercial
Sector
Industrial CHP
5.4K MWh
Latest Month
75.0K MWh
Annual Generation
22.9%
Capacity Factor
No financial data available for this plant.
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.NLONDNCT115
Pricing Hub
.Z.CONNECTICUT
Node Source
Curated node match
Last updated 2026-03-14
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