Masspower
Natural gas power plant in Hampden County, Massachusetts. 260.9 MW of nameplate capacity across 3 generators, operated by Masspower.
Also known as Masspower Power Plant · EIA plant 10726
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Key facts
- Capacity
- 260.9 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- July 1993First generator online
- Operator
- MasspowerEIA operator ID 11741
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Hampden County, MA42.1575, −72.5225
- EIA plant ID
- 10726EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Masspower produces
Free · EIA-923Net generation, 2025
442 GWh
441,701 MWh, final
Capacity factor, 2025
19.3%
2024: 20.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
233.9–876.0
GWh a year. Low 2022, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,685,634 | Not reported | 12 of 12 |
| 2001 | 1,328,005 | Not reported | 12 of 12 |
| 2002 | 1,518,043 | Not reported | 12 of 12 |
| 2003 | 1,642,081 | Not reported | 12 of 12 |
| 2004 | 1,240,552 | Not reported | 12 of 12 |
| 2005 | 841,508 | Not reported | 12 of 12 |
| 2006 | 359,193 | Not reported | 12 of 12 |
| 2007 | 376,398 | Not reported | 12 of 12 |
| 2008 | 241,526 | Not reported | 12 of 12 |
| 2009 | 181,031 | Not reported | 12 of 12 |
| 2010 | 555,613 | 24.3% | 12 of 12 |
| 2011 | 840,417 | 36.8% | 12 of 12 |
| 2012 | 870,195 | 38.0% | 12 of 12 |
| 2013 | 716,500 | 31.4% | 12 of 12 |
| 2014 | 781,932 | 34.2% | 12 of 12 |
| 2015 | 876,022 | 38.3% | 12 of 12 |
| 2016 | 678,568 | 29.6% | 12 of 12 |
| 2017 | 625,242 | 27.4% | 12 of 12 |
| 2018 | 498,909 | 21.8% | 12 of 12 |
| 2019 | 282,447 | 12.4% | 12 of 12 |
| 2020 | 352,632 | 15.4% | 12 of 12 |
| 2021 | 256,254 | 11.2% | 12 of 12 |
| 2022 | 233,904 | 10.2% | 12 of 12 |
| 2023 | 609,145 | 26.7% | 12 of 12 |
| 2024 | 475,710 | 20.8% | 12 of 12 |
| 2025 | 441,701 | 19.3% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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
224,615
US short tons. 2024: 240,552
SO₂, 2025
1
US short tons
NOx, 2025
65
US short tons
CO₂ per MWh, calculated
0.51 t
About 1,017 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 10726 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, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | 90.0 | July 1993 |
| GEN2 | Natural Gas Fired Combined Cycle | 90.0 | July 1993 |
| GEN3 | Natural Gas Fired Combined Cycle | 80.9 | July 1993 |
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 Masspower 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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Questions about Masspower
How much power does Masspower produce?
Masspower reported 441,701 MWh (442 GWh) of net generation in 2025, a 19.3% capacity factor on 260.9 MW of nameplate capacity.
Where is Masspower?
Masspower is in Hampden County, Massachusetts, at 42.1575, −72.5225. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Masspower?
EIA-860M for August 2026 lists Masspower as the operator (EIA operator ID 11741). The operator is not always the owner.
When did Masspower start operating?
Its first generator began operating in July 1993, according to EIA-860M.
Does InfraMap have power prices for Masspower?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Masspower, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page