Wheelabrator Millbury Facility
Municipal solid waste power plant in Worcester County, Massachusetts. 47.6 MW of nameplate capacity across 1 generator, operated by Wheelabrator Environmental Systems.
Also known as EIA plant 50878
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Key facts
- Capacity
- 47.6 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- September 1987First generator online
- Operator
- Wheelabrator Environmental SystemsEIA operator ID 20541
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Worcester County, MA42.2214, −71.7669
- EIA plant ID
- 50878EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Wheelabrator Millbury Facility produces
Free · EIA-923Net generation, 2025
319 GWh
319,206 MWh, final
Capacity factor, 2025
76.6%
2024: 76.1%
January to July 2026
152 GWh
Provisional
Range, 2015 to 2025
293.5–325.2
GWh a year. Low 2017, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 324,963 | Not reported | 12 of 12 |
| 2002 | 328,436 | Not reported | 12 of 12 |
| 2003 | 190,488 | Not reported | 7 of 12 |
| 2004 | 328,383 | Not reported | 12 of 12 |
| 2005 | 329,422 | Not reported | 12 of 12 |
| 2006 | 328,529 | Not reported | 12 of 12 |
| 2007 | 317,136 | Not reported | 12 of 12 |
| 2008 | 321,045 | Not reported | 12 of 12 |
| 2009 | 316,229 | Not reported | 12 of 12 |
| 2010 | 318,748 | 76.4% | 12 of 12 |
| 2011 | 314,726 | 75.5% | 12 of 12 |
| 2012 | 322,594 | 77.2% | 12 of 12 |
| 2013 | 324,272 | 77.8% | 12 of 12 |
| 2014 | 321,892 | 77.2% | 12 of 12 |
| 2015 | 325,167 | 78.0% | 12 of 12 |
| 2016 | 314,988 | 75.3% | 12 of 12 |
| 2017 | 293,543 | Not reported | 12 of 12 |
| 2018 | 319,457 | 76.6% | 12 of 12 |
| 2019 | 310,381 | 74.4% | 12 of 12 |
| 2020 | 313,217 | 74.9% | 12 of 12 |
| 2021 | 320,576 | 76.9% | 12 of 12 |
| 2022 | 318,641 | 76.4% | 12 of 12 |
| 2023 | 313,982 | 75.3% | 12 of 12 |
| 2024 | 318,029 | 76.1% | 12 of 12 |
| 2025 | 319,206 | 76.6% | 12 of 12 |
| 2026 (provisional, partial year) | 152,451 | 62.9% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Municipal Solid Waste | 47.6 | September 1987 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Wheelabrator Environmental Systems as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Wheelabrator Millbury Facility
More plants operated by Wheelabrator Environmental Systems
Questions about Wheelabrator Millbury Facility
How much power does Wheelabrator Millbury Facility produce?
Wheelabrator Millbury Facility reported 319,206 MWh (319 GWh) of net generation in 2025, a 76.6% capacity factor on 47.6 MW of nameplate capacity. From January to July 2026 it reported 152 GWh, which is provisional.
Where is Wheelabrator Millbury Facility?
Wheelabrator Millbury Facility is in Worcester County, Massachusetts, at 42.2214, −71.7669. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Wheelabrator Millbury Facility?
EIA-860M for August 2026 lists Wheelabrator Environmental Systems as the operator (EIA operator ID 20541). The operator is not always the owner.
When did Wheelabrator Millbury Facility start operating?
Its first generator began operating in September 1987, according to EIA-860M.
Does InfraMap have power prices for Wheelabrator Millbury Facility?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Wheelabrator Millbury Facility, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page