M Street Jet
Suffolk County, Massachusetts · EIA plant ID 10176 · Operator: Massachusetts Bay Trans Auth
Nameplate69MWSummer 50 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate19,656Btu/kWhfossil units, electric fuel, HHV
First online1979Runs as rarely runs
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 | 4.4 | 1.0% | 14,667 |
| 2002 | 2.7 | 0.6% | 13,779 |
| 2003 | 3.5 | 0.8% | 13,591 |
| 2004 | 1.2 | 0.3% | 13,446 |
| 2005 | 2.8 | 0.6% | 13,479 |
| 2006 | 2.2 | 0.5% | 13,880 |
| 2007 | 0 | 0.0% | — |
| 2008 | 3 | 0.7% | 14,763 |
| 2009 | 2.9 | 0.7% | 14,043 |
| 2010 | 3.9 | 0.9% | 13,613 |
| 2011 | 0.8 | 0.2% | 15,057 |
| 2012 | 0.6 | 0.1% | 13,634 |
| 2013 | 0.3 | 0.1% | 13,450 |
| 2014 | 1.9 | 0.4% | 13,558 |
| 2015 | 1.5 | 0.4% | 15,569 |
| 2016 | 0.6 | 0.1% | 16,433 |
| 2017 | 1.4 | 0.3% | 16,121 |
| 2018 | 0.6 | 0.1% | 17,425 |
| 2019 | 0.3 | 0.1% | 28,906 |
| 2020 | 0.3 | 0.1% | 17,118 |
| 2021 | 0.4 | 0.1% | 17,955 |
| 2022 | 0.4 | 0.1% | 19,930 |
| 2023 | 0.3 | 0.1% | 20,302 |
| 2024 | 0.5 | 0.1% | 20,930 |
| 2025 | 0.3 | 0.1% | 19,656 |
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 |
|---|---|---|---|---|---|---|---|---|
| NO.6 | Petroleum Liquids | GT | 69 | 50 | May 1979 | Operating | — | coming soon |
Owner / operator
Operator: Massachusetts Bay Trans Auth. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Massachusetts Bay Trans Auth | 100.0% | 69 MW |
Nearby plants
Within 80 km.
| Gillette SBMC | 14 MW | 2.1 km |
| UMass Boston | 8 MW | 3 km |
| Boston Medical Center CHP Plant | 3 MW | 3.6 km |
| Dorchester Solar Site | 1 MW | 4.5 km |
| Kendall Square Station | 235 MW | 4.7 km |
| Boston Scientific Solar | 1 MW | 5.1 km |