General Electric Aircraft Engines
Essex County, Massachusetts · EIA plant ID 10029 · Operator: General Electric Aircraft Engines
×33 MW natural gas retired since 2020 (latest Mar 2020)
Nameplate2MWSummer 2 MW
Generators1in service
Net generation2GWh12 mo to Aug 2026
Capacity factor16%solar units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online2017
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), solar 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 | 146.7 | — | — |
| 2002 | 145.9 | — | — |
| 2003 | 130.9 | — | 15,399 |
| 2004 | 131.1 | — | 8,368 |
| 2005 | 118.8 | — | 8,319 |
| 2006 | 123.8 | — | 8,314 |
| 2007 | 96.1 | — | 8,942 |
| 2008 | 62.4 | — | 9,473 |
| 2009 | 64 | — | 9,169 |
| 2010 | 56.1 | — | 9,207 |
| 2011 | 55.3 | — | 9,304 |
| 2012 | 70.5 | — | 8,926 |
| 2013 | 45.4 | — | 9,476 |
| 2014 | 36.5 | — | 9,782 |
| 2015 | 49 | — | 9,138 |
| 2016 | 57.1 | — | 5,786 |
| 2017 | 62.3 | 10.6% | 5,809 |
| 2018 | 61.8 | 12.2% | 5,835 |
| 2019 | 53.9 | 11.3% | 6,014 |
| 2020 | 16.4 | 13.4% | 16,590 |
| 2021 | 2.3 | 12.5% | — |
| 2022 | 2.4 | 13.3% | — |
| 2023 | 2.3 | 17.7% | — |
| 2024 | 2.3 | 17.4% | — |
| 2025 | 2.5 | 18.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| PV | Solar Photovoltaic | PV | 1.5 | 1.5 | May 2017 | Operating | — | coming soon |
| GEN5 | Natural Gas Steam Turbine | ST | 10 | 8.5 | Jan 1948 | Retired Mar 2020 | — | coming soon |
| GEN6 | Natural Gas Steam Turbine | ST | 10 | 8.5 | Jan 1956 | Retired Mar 2020 | — | coming soon |
| GEN7 | Natural Gas Steam Turbine | ST | 12.5 | 6.8 | Jan 1968 | Retired Mar 2020 | — | coming soon |
| GEN8 | Natural Gas Fired Combustion Turbine | GT | 21.1 | 19.1 | Jan 1972 | Retired Aug 2013 | — | coming soon |
Owner / operator
Operator: General Electric Aircraft Engines. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| AlsoEnergy | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Wheelabrator Saugus | 58 MW | 0.6 km |
| 515 Main Saugus | 1 MW | 7 km |
| Energizar BESS | — | 7.2 km |
| Beebe Substation Battery Storage | 3 MW | 7.4 km |
| Wakefield MA BESS 1 | 5 MW | 8 km |
| Rousselot Inc | retired | 8.5 km |