427.5 MW Natural Gas operating in Worcester, MA — ISO New England Inc.
427.5 MW
Nameplate Capacity
2
Generators
units
Natural Gas Fired Combined Cycle
Technology
2001
Operating Since
Coordinates
42.1123, -72.0151
County
Worcester, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Millennium Power Company, LLC | — | — |
| Owner(s) | Millennium Power Company, LLC | — | — |
| Status | Operating | — | — |
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
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
136.5K MWh
Latest Month
852.2K MWh
Annual Generation
22.6%
Capacity Factor
No financial data available for this plant.
Point 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
Last updated 2026-03-26
View all 9 articles