Masspower

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Power plant · Gas, combined cycle

Key facts

Power plant · Gas, combined cycle Operating

Capacity: Capacity: sourceEIA-860M · Oct 30, 2026Open licenseMW

Commissioned: 1993
Net generation, 2025: 441,701 MWh
Grid: 115 kV to Western Massachusetts Electric Company (ISNE)
Location: Hampden County, Massachusetts
Operated by: Masspower

Net generation, 2025: 441,701MWh
Fuel burned, 2025: 3,997,318MMBtu
Capacity factor, 2025: 19.3%
Heat rate, 2025: 9,050Btu/kWh

Capacity factor % of full output, by year

Heat rate Btu per kWh, by year

Net generation, fuel burned, capacity factor and heat rate by year, newest first, as EIA's bulk electricity file states them.
Year	Net generation (MWh)	Fuel burned (MMBtu)	Capacity factor	Heat rate (Btu/kWh)
2025	441,701	3,997,318	19.3%	9,050
2024	475,710	4,090,340	20.8%	8,598
2023	609,145	5,322,667	26.7%	8,738
2022	233,904	2,063,245	10.2%	8,821
2021	256,254	2,377,443	11.2%	9,278
2020	352,632	3,084,003	15.4%	8,746
2019	282,447	2,450,963	12.4%	8,678
2018	498,909	4,386,719	21.8%	8,793
2017	625,242	5,396,609	27.4%	8,631
2016	678,568	5,859,740	29.6%	8,635
2015	876,022	7,509,872	38.3%	8,573
2014	781,932	6,677,360	34.2%	8,540
2013	716,500	6,161,976	31.4%	8,600
2012	870,195	7,463,995	38.0%	8,577
2011	840,417	7,155,719	36.8%	8,514
2010	555,613	4,749,210	24.3%	8,548
2009	181,031	1,555,412	7.9%	8,592
2008	241,526	2,120,722	10.5%	8,780
2007	376,398	3,321,648	16.5%	8,825
2006	359,193	3,199,577	15.7%	8,908
2005	841,508	7,540,737	36.8%	8,961
2004	1,240,552	11,156,612	54.1%	8,993
2003	1,642,081	14,342,883	71.9%	8,735
2002	1,518,043	12,957,992	66.4%	8,536
2001	1,328,005	11,911,574	58.1%	8,970

How these are worked out

Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.

Sources

3 sources

Sources EIA-860M · GEM · EIA

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
GEMOpen license, with credit · retrieved Oct 26, 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)

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