Potter Station 2
Norfolk County, Massachusetts · EIA plant ID 1660 · Operator: Town of Braintree - (MA)
×101 MW natural gas retired since 2020 (latest Jan 2024)
Nameplate116MWSummer 105 MW
Generators2in service
Net generation41GWh12 mo to Dec 2025
Capacity factor4%gas/coal/oil units, summer MW
Heat rate9,779Btu/kWhfossil units, electric fuel, HHV
First online2009Runs as peaking
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 | 109.5 | — | — |
| 2002 | 78.2 | — | — |
| 2003 | 43.9 | 6.1% | 10,383 |
| 2004 | 46.7 | 6.4% | 10,348 |
| 2005 | 18.3 | 2.5% | 11,965 |
| 2006 | 13.7 | 1.9% | 11,049 |
| 2007 | 10.8 | 1.5% | 15,297 |
| 2008 | 10.8 | 1.5% | 11,365 |
| 2009 | 2.6 | 0.2% | 11,162 |
| 2010 | 121 | 7.4% | 10,162 |
| 2011 | 57.2 | 3.5% | 10,276 |
| 2012 | 69.6 | 4.3% | 10,349 |
| 2013 | 69.9 | 4.3% | 10,250 |
| 2014 | 80.5 | 5.0% | 10,164 |
| 2015 | 40.4 | 2.5% | 10,167 |
| 2016 | 58.9 | 3.6% | 10,447 |
| 2017 | 45 | 2.8% | 10,213 |
| 2018 | 46.8 | 2.9% | 10,038 |
| 2019 | 14.9 | 0.9% | 10,960 |
| 2020 | 20.7 | 1.3% | 9,759 |
| 2021 | 22.8 | 1.4% | 9,723 |
| 2022 | 34.8 | 2.2% | 9,673 |
| 2023 | 32.3 | 2.0% | 10,092 |
| 2024 | 23.3 | 2.5% | 9,299 |
| 2025 | 41 | 4.5% | 9,779 |
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 mo207,202 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas105
Net summer MW on oil105
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| WAT1 | Natural Gas Fired Combustion Turbine | GT | 58 | 52.6 | Jul 2009 | Operating | — | coming soon |
| WAT2 | Natural Gas Fired Combustion Turbine | GT | 58 | 52.6 | Jul 2009 | Operating | — | coming soon |
| CC2 | Natural Gas Fired Combined Cycle | CT | 76 | 62.6 | Apr 1977 | Retired Jan 2024 | — | coming soon |
| CC3 | Natural Gas Fired Combined Cycle | CA | 25 | 15.5 | Apr 1977 | Retired Jan 2024 | — | coming soon |
| IC1 | Petroleum Liquids | IC | 2.7 | 2.3 | Jul 1963 | Retired May 2014 | — | coming soon |
| IC2 | Petroleum Liquids | IC | 2.7 | 2.3 | Jul 1963 | Retired Jan 2007 | — | coming soon |
Owner / operator
Operator: Town of Braintree - (MA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Town of Braintree - (MA) | 100.0% | 116 MW |
Nearby plants
Within 80 km.
| Fore River Generating Station | 872 MW | 0.8 km |
| Braintree Landfill Solar | 1 MW | 4 km |
| Station 9 Energy Storage System | 2 MW | 5.3 km |
| Boston Scientific Solar | 1 MW | 8.5 km |
| Hull Wind II | retired | 9.6 km |
| Dorchester Solar Site | 1 MW | 9.8 km |