Newington Energy Center
Natural gas power plant in Rockingham County, New Hampshire. 605.5 MW of nameplate capacity across 3 generators, operated by Essential Power Operating Services, LLC.
Also known as Essential Power Newington LLC Power Plant · Newington Energy · EIA plant 55661
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Key facts
- Capacity
- 605.5 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- October 2002First generator online
- Operator
- Essential Power Operating Services, LLCEIA operator ID 13538
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Rockingham County, NH43.1047, −70.8061
- EIA plant ID
- 55661EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Newington produces
Free · EIA-923Net generation, 2025
1.91 TWh
1,913,569 MWh, final
Capacity factor, 2025
36.1%
2024: 23.0%
January to July 2026
1.25 TWh
Provisional
Range, 2015 to 2025
0.5–1.9
TWh a year. Low 2020, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 2,246,577 | Not reported | 12 of 12 |
| 2004 | 2,541,900 | Not reported | 12 of 12 |
| 2005 | 2,634,757 | Not reported | 12 of 12 |
| 2006 | 2,640,191 | Not reported | 12 of 12 |
| 2007 | 2,959,534 | Not reported | 12 of 12 |
| 2008 | 2,261,268 | Not reported | 11 of 12 |
| 2009 | 1,378,077 | Not reported | 12 of 12 |
| 2010 | 1,921,092 | 36.2% | 12 of 12 |
| 2011 | 2,712,647 | 51.1% | 12 of 12 |
| 2012 | 2,122,028 | 39.9% | 12 of 12 |
| 2013 | 13,695 | Not reported | 1 of 12 |
| 2014 | 939,577 | Not reported | 12 of 12 |
| 2015 | 1,342,994 | Not reported | 12 of 12 |
| 2016 | 1,286,473 | 24.2% | 12 of 12 |
| 2017 | 835,235 | 15.7% | 12 of 12 |
| 2018 | 804,869 | 15.2% | 12 of 12 |
| 2019 | 517,809 | 9.8% | 12 of 12 |
| 2020 | 473,557 | 8.9% | 12 of 12 |
| 2021 | 1,228,954 | 23.2% | 12 of 12 |
| 2022 | 1,320,448 | 24.9% | 12 of 12 |
| 2023 | 832,564 | 15.7% | 12 of 12 |
| 2024 | 1,222,173 | 23.0% | 12 of 12 |
| 2025 | 1,913,569 | 36.1% | 12 of 12 |
| 2026 (provisional, partial year) | 1,247,618 | 40.5% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDCO₂, 2025
853,583
US short tons. 2024: 541,826
SO₂, 2025
4
US short tons
NOx, 2025
76
US short tons
CO₂ per MWh, calculated
0.45 t
About 892 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 55661 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
718
million gallons
Consumption, 2024
296
million gallons
Source
Piscataqua River
Surface, Brackish. Induced-draft tower
Watershed stress
Very low/none · 0.148
USGS SUI, HUC12 Piscataqua River-Frontal Portsmouth Harbor
12 of 12 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GT-1 | Natural Gas Fired Combined Cycle | 185.6 | October 2002 |
| GT-2 | Natural Gas Fired Combined Cycle | 185.6 | October 2002 |
| ST | Natural Gas Fired Combined Cycle | 234.3 | October 2002 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Essential Power Operating Services, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Newington
Questions about Newington
How much power does Newington Energy Center produce?
Newington Energy Center reported 1,913,569 MWh (1.91 TWh) of net generation in 2025, a 36.1% capacity factor on 605.5 MW of nameplate capacity. From January to July 2026 it reported 1.25 TWh, which is provisional.
Where is Newington Energy Center?
Newington Energy Center is in Rockingham County, New Hampshire, at 43.1047, −70.8061. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Newington Energy Center?
EIA-860M for August 2026 lists Essential Power Operating Services, LLC as the operator (EIA operator ID 13538). The operator is not always the owner.
When did Newington Energy Center start operating?
Its first generator began operating in October 2002, according to EIA-860M.
Does InfraMap have power prices for Newington Energy Center?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Newington Energy Center, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page