Newington Energy Center — Plant Summary
- EIA Plant ID
- 55661
- Capacity
- 605.5 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Rockingham, NH
- Operating Since
- 2002
- Generators
- 3
- Operator
- Essential Power Operating Services, LLC
- Parent Company
- —
- Annual Generation
- 1,913,569 MWh
- Capacity Factor
- 36.1%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Newington Energy Center
OperatingNatural Gas
Ranked #2 of 4 Natural Gas plants in NH#391 of 2009 nationally
605.5 MW Natural Gas operating in Rockingham, NH — ISO New England Inc.
EIAWD
605.5 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2002
Operating Since
Location
Coordinates
43.1047, -70.8061
County
Rockingham, NH
Nearby Plants
- NewingtonNatural Gas414 MW · 1.3 km
- SchillerBit. Coal171.2 MW · 1.9 km
- UNH 7.9 MW PlantLandfill Gas7.9 MW · 11.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Essential Power Operating Services, LLC | — | — |
| Owner(s) | Essential Power Operating Company, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Newington Energy Center is a 605.5 MW natural gas-fired combined cycle power plant located in Rockingham County, New Hampshire. The plant began operating in 2002 and is owned and operated by Essential Power Operating Services, LLC. It consists of three generators. Newington Energy Center is the second-largest of three power plants in New Hampshire, and ranks 395th out of 945 plants nationally.
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, Newington Energy Center generated 1,913,569 MWh of electricity, achieving a capacity factor of 36.1%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
270.5K MWh
Latest Month
1.9M MWh
Annual Generation
36.1%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Newington Energy Substation · 345 kV
Substation Distance
< 10 km
Operator
Eversource
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
UN.NEW_ENER18.0NEWE
Pricing Hub
.Z.NEWHAMPSHIRE
Node Source
EIA-860 direct report
News & Articles (10)Beta
Deals·m and a
Vistra acquires Cogentrix Energy in $4.7bn deal to serve surging data center demand across US
Texas-based retail electricity and power generation firm Vistra has acquired US power generation firm Cogentrix Energy in a $4.7 billion...
Vistra (buyer)Cogentrix Energy (seller)
Data Center Dynamics·2 months ago
Industry·corporate
Aging Oil Plants Face Unclear Future in New England as Winter Risks Rise
In New England, increasing winter reliability concerns are driving questions about how long the region's aging fleet of oil-fired power...
RTO Insider·3 months ago
Industry·corporate
Distant Dome: New England’s Last Coal-Fired Power Plant Closes
Anyone who travelled I-89 or I-93 in the winter months near the Capital City, would see a large white plume of smoke rising out of Merrimack...
Merrimack (operator)
InDepthNH.org·4 months ago
Industry·corporate
New England’s final coal plant shuts down years ahead of schedule
Poor economics drove the aging New Hampshire plant offline three years early, even as the Trump administration pushes to revitalize coal.
New Hampshire (other)Trump administration (other)
Canary Media·5 months ago
Last updated 2026-03-26
View all 10 articles