Millennium Power — Plant Summary
- EIA Plant ID
- 55079
- Capacity
- 427.5 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Worcester, MA
- Operating Since
- 2001
- Generators
- 2
- Operator
- Millennium Power Company, LLC
- Parent Company
- —
- Annual Generation
- 852,182 MWh
- Capacity Factor
- 22.6%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Millennium Power
OperatingNatural Gas
Ranked #5 of 40 Natural Gas plants in MA#528 of 2009 nationally
427.5 MW Natural Gas operating in Worcester, MA — ISO New England Inc.
EIAWD
427.5 MW
Nameplate Capacity
2
Generators
units
Natural Gas Fired Combined Cycle
Technology
2001
Operating Since
Location
Coordinates
42.1123, -72.0151
County
Worcester, MA
Nearby Plants
- Incom Solar, LLC CSGSolar2 MW · 0.7 km
- Southbridge Landfill Gas-to-EnergyLandfill Gas1.6 MW · 1.7 km
- Southbridge SolarSolar1.9 MW · 2.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Millennium Power Company, LLC | — | — |
| Owner(s) | Millennium Power Company, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Millennium Power Plant is a 360 MW power plant located in Charlton, Massachusetts. It is a natural gas combined-cycle plant currently owned by Talen Energy and operated by Millennium Power Partners LP.
Read more on WikipediaMillennium Power is a 427.5 MW natural gas-fired combined cycle power plant located in Worcester County, Massachusetts. The plant began operating in 2001 and is owned and operated by Millennium Power Company, LLC. It consists of two generators and is interconnected to the ISO New England Inc. balancing authority within the Northeast Power Coordinating Council (NPCC) region.
In the most recent year with available data, Millennium Power generated 852,182 MWh of electricity, achieving a capacity factor of 22.6%. The plant ranks as the 5th largest out of 15 power plants in Massachusetts, and 530th out of 945 plants nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
136.5K MWh
Latest Month
852.2K MWh
Annual Generation
22.6%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Millenium Substation · 115 kV
Substation Distance
< 10 km
Operator
National Grid
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
UN.MILLENUM16 MILN
Pricing Hub
.H.INTERNAL_HUB
Node Source
EIA-860 direct report
News & Articles (9)Beta
General·none
Alexander Schultz Obituary (2014) - Westfield, MA
Alexander Edward Schultz, 23, of Westfield died Wednesday, November 26th 2014 in Westfield. He was born in Westfield on June 30, 1991 to Edward and Maureen (...
MassLive.com·4 years ago
Regulatory·state puc
State DPU issues stay on proposed $100M LNG plant in Charlton
Tuesday's deadline to file for intervenor status in the proposed $100 million liquid natural gas facility on Route 169, near a power plant, has been delayed...
State DPU (regulator)
Worcester Telegram·6 years ago
Industry·corporate
Charlton residents voice concern over proposed LNG facility
The plan to develop a $100 million liquid natural gas plant along the “energy corridor” on Route 169 met resistance from residents at a state public hearing...
Worcester Telegram·6 years ago
Industry·corporate
Charlton $100M LNG plant to present new plan Wednesday
CHARLTON — The plan to develop a $100 million liquid natural gas plant along the “energy corridor” will be presented at a public hearing at...
Worcester Telegram·6 years ago
Last updated 2026-03-14
View all 9 articles