Millennium Power is a 427.5 MW natural-gas-fired combined-cycle generating facility at 10 Sherwood Lane, Charlton, Worcester County, Massachusetts. The plant consists of combustion-turbine generator CT01 (295.2 MW nameplate) and steam-turbine generator ST01 (132.3 MW nameplate), both operating since April 2001.
Canonical EIA plant baseline.
plant-55079
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| CT01 | 295.2 MW 222.1 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Apr 2001 | Operating |
| ST01 | 132.3 MW 108 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Apr 2001 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Project milestones and public references behind the asset profile.
EIA-860 lists generator CT01, generator ST01 with this operating date.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
PG&E National Energy Group closed the first tranche of a $1.075 billion loan facility covering the Athens, Harquahala, and Millennium projects. Millennium had already entered commercial operation in April 2001; proceeds could reimburse prior expenditures and finance completion of the covered projects. Joint lead arrangers were Société Générale and Salomon Smith Barney/Citibank, with additional arrangers and lenders including JPMorgan Chase, ABN-AMRO, Royal Bank of Scotland, Export Development Corporation of Canada, Crédit Lyonnais, Barclays Bank, and DZ Bank.
PG&E National Energy Group's indirect subsidiary Millennium Power Partners, L.P. and MACH Gen, LLC filed with FERC regarding additional flexibility in implementing a previously authorized transfer of jurisdictional facilities. The record describes this as a framework for proposed transfer rather than documenting a completed plant-specific sale.
Talen Energy Supply, LLC completed its approximately $1.175 billion acquisition of 100% of MACH Gen, LLC. MACH Gen's structure included Millennium Power Partners, L.P., which owned and operated the Millennium Project; this was an indirect acquisition of Millennium as part of a three-plant portfolio deal covering plants in New York, Massachusetts, and Arizona.
Ara Partners announced that Ara Energy would acquire Gate City Power and related businesses from HF Capital for approximately $875 million. Gate City Power is described as a portfolio of thermal generation assets across NYISO and ISO-NE totaling approximately 2.2 GW. The announcement does not disclose a Millennium Power-specific purchase price. The closing was expected in early 2026, subject to regulatory approvals and customary conditions.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Millennium Power has a reported capacity of 427.5 MW. Source: EIA Form 860M.
Millennium Power is a Natural Gas Fired Combined Cycle facility in Worcester County, MA, participating in the ISO-NE market.
Millennium Power is in Worcester County, MA, inside the ISO-NE balancing area.
Millennium Power is operated by Millennium Power Company, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Millennium Power reported 1,007.4 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
By capacity, Millennium Power ranks #322 of 538 operating plants of the same technology nationally. It ranks #5 of 15 in MA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
