Masspower
Hampden County, Massachusetts · EIA plant ID 10726 · Operator: Masspower
Nameplate261MWSummer 245 MW
Generators3in service
Net generation442GWh12 mo to Dec 2025
Capacity factor21%gas/coal/oil units, summer MW
Heat rate9,050Btu/kWhfossil units, electric fuel, HHV
First online1993Runs as intermediate
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) |
|---|---|---|---|
| 2001 | 1,328 | — | — |
| 2002 | 1,518 | — | — |
| 2003 | 1,642.1 | 81.0% | 8,651 |
| 2004 | 1,240.6 | 61.0% | 8,572 |
| 2005 | 841.5 | 41.5% | 8,572 |
| 2006 | 359.2 | 17.2% | 8,564 |
| 2007 | 376.4 | 18.0% | 8,572 |
| 2008 | 241.5 | 11.5% | 8,530 |
| 2009 | 181 | 8.7% | 8,517 |
| 2010 | 555.6 | 26.6% | 8,484 |
| 2011 | 840.4 | 40.3% | 8,456 |
| 2012 | 870.2 | 13.9% | 8,522 |
| 2013 | 716.5 | 33.4% | 8,495 |
| 2014 | 781.9 | 36.4% | 8,479 |
| 2015 | 876 | 40.8% | 8,488 |
| 2016 | 678.6 | 31.5% | 8,499 |
| 2017 | 625.2 | 29.1% | 8,526 |
| 2018 | 498.9 | 23.3% | 8,485 |
| 2019 | 282.4 | 13.2% | 8,525 |
| 2020 | 352.6 | 16.4% | 8,535 |
| 2021 | 256.3 | 11.9% | 8,568 |
| 2022 | 233.9 | 10.9% | 8,561 |
| 2023 | 609.1 | 28.4% | 8,738 |
| 2024 | 475.7 | 22.1% | 8,598 |
| 2025 | 441.7 | 20.6% | 9,050 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | CT | 90 | 83 | Jul 1993 | Operating | — | coming soon |
| GEN2 | Natural Gas Fired Combined Cycle | CT | 90 | 83 | Jul 1993 | Operating | — | coming soon |
| GEN3 | Natural Gas Fired Combined Cycle | CA | 80.9 | 79 | Jul 1993 | Operating | — | coming soon |
Owner / operator
Operator: Masspower. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Masspower | 100.0% | 261 MW |
Nearby plants
Within 80 km.
| Indian Orchard Plant 1 | 6 MW | 0.2 km |
| Indian Orchard | 4 MW | 1.3 km |
| Ameresco Chicopee Energy | 8 MW | 1.3 km |
| Cottage Street Solar Facility | 3 MW | 1.9 km |
| Indian Orchard PV Facility | 2 MW | 2.1 km |
| Oak Street Solar | 4 MW | 2.3 km |