Pfizer Groton Plant — Plant Summary
- EIA Plant ID
- 54236
- Capacity
- 37.5 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine
- Status
- Operating
- Location
- New London, CT
- Operating Since
- 1952
- Generators
- 4
- Operator
- Pfizer Inc
- Parent Company
- —
- Annual Generation
- 75,036.81 MWh
- Capacity Factor
- 22.9%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Pfizer Groton Plant
OperatingNatural GasHybrid
Ranked #11 of 48 Natural Gas plants in CT#1216 of 2009 nationally
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.
EIAWD
37.5 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Natural Gas Steam Turbine
1952
Operating Since
Location
Coordinates
41.3315, -72.0786
County
New London, CT
Nearby Plants
- Pfizer Groton Fuel CellNatural Gas5.6 MW · 0.7 km
- Yale New Haven - New LondonNatural Gas1.8 MW · 2.3 km
- Bridge Street 1 & 2Distillate Oil5.2 MW · 3.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Pfizer Inc | — | — |
| Owner(s) | Pfizer Inc | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
34.5 kV
Regulatory Status
NR
Entity Type
Commercial
Sector
Industrial CHP
Generation
5.4K MWh
Latest Month
75.0K MWh
Annual Generation
22.9%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
MEDIUM confidenceMarket Position
ISO/RTO Market
ISO-NE
LMP Node
LD.NLONDNCT115
Pricing Hub
.Z.CONNECTICUT
Node Source
Curated node match
News & Articles (10)Beta
Grid·outage
Winter storm knocked out power at Pfizer's Groton data center in Connecticut
A severe storm earlier this week led to a power outage at a data center in Groton, Connecticut. The area experienced high winds on Monday.
Pfizer (other)Groton (other)
DatacenterDynamics·1 years ago
Industry·corporate
Danbury-based FuelCell Energy cutting 17 percent of workforce amid lower clean-energy spending
Citing expectations for lower spending on clean-energy technologies, FuelCell Energy is cutting jobs. The company is based in Danbury.
FuelCell Energy (other)Danbury (other)
CT Insider·1 years ago
General
Our Board Members
Learn more about Pfizer's Board Members, the diverse group of people responsible for steering the company and shaping the future of the organization.
Pfizer (operator)
Pfizer·4 years ago
Industry·technology
Portable. Continuous. Miniature. Modular.
Pfizer's first Portable Continuous Miniature Modular (PCMM) manufacturing platform for solid oral dose medicines was used for the development and launch of an...
Pfizer (other)
Pfizer·5 years ago
Last updated 2026-03-14
View all 10 articles