Essential Power Newington LLC
Rockingham County, New Hampshire · EIA plant ID 55661 · Operator: Essential Power Newington LLC
Nameplate606MWSummer 561 MW
Generators3in service
Net generation2,236GWh12 mo to Aug 2026
Capacity factor46%gas/coal/oil units, summer MW
Heat rate7,386Btu/kWhfossil units, electric fuel, HHV
First online2002Runs as intermediate
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2003 | 2,246.6 | 48.9% | 7,170 |
| 2004 | 2,541.9 | 55.1% | 7,706 |
| 2005 | 2,634.8 | 57.3% | 7,418 |
| 2006 | 2,640.2 | 57.4% | 7,398 |
| 2007 | 2,959.5 | 64.3% | 7,302 |
| 2008 | 2,495.2 | 54.1% | 7,443 |
| 2009 | 1,378.1 | 30.0% | 7,791 |
| 2010 | 1,921.1 | 41.8% | 7,362 |
| 2011 | 2,712.6 | 59.0% | 7,333 |
| 2012 | 2,122 | 46.0% | 7,537 |
| 2013 | 689.3 | 15.0% | 7,679 |
| 2014 | 939.6 | 20.5% | 7,633 |
| 2015 | 1,343 | 27.5% | 7,487 |
| 2016 | 1,286.5 | 26.5% | 7,447 |
| 2017 | 835.2 | 17.2% | 7,574 |
| 2018 | 804.9 | 15.8% | 7,565 |
| 2019 | 517.8 | 10.2% | 7,539 |
| 2020 | 473.6 | 9.6% | 7,510 |
| 2021 | 1,229 | 25.0% | 7,372 |
| 2022 | 1,320.4 | 26.9% | 7,502 |
| 2023 | 832.6 | 17.0% | 7,526 |
| 2024 | 1,222.2 | 24.8% | 7,413 |
| 2025 | 1,913.6 | 39.0% | 7,387 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo1,664,793 MMBtu
Last month with liquid burnAug 2026
Switch while operatingYes
Net summer MW on gas329
Net summer MW on oil329
Time gas → oilup to 6 h (EIA 6H)
Time oil → gasup to 6 h (EIA 6H)
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GT-1 | Natural Gas Fired Combined Cycle | CT | 185.6 | 164.4 | Oct 2002 | Operating | — | coming soon |
| GT-2 | Natural Gas Fired Combined Cycle | CT | 185.6 | 164.4 | Oct 2002 | Operating | — | coming soon |
| ST | Natural Gas Fired Combined Cycle | CA | 234.3 | 231.7 | Oct 2002 | Operating | — | coming soon |
Owner / operator
Operator: Essential Power Newington LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Essential Power Operating Company, LLC | 100.0% | 606 MW |
Nearby plants
Within 80 km.
| Newington | 414 MW | 1.3 km |
| Schiller | 21 MW | 1.9 km |
| UNH 7.9 MW Plant | 8 MW | 11.1 km |
| Salmon Falls | 1 MW | 13.6 km |
| Rollinsford | 1 MW | 14.6 km |
| Knights Pond Solar, LLC | 4 MW | 16.2 km |