Allegany Cogen
Allegany Generating Station LLC - Allegany County - NYISO
A natural-gas-fired combined-cycle cogeneration facility in Hume, Allegany County, New York, owned by Allegany Generating Station LLC and operated under Alliance Energy New York, LLC. The facility uses a General Electric LM6000 gas turbine with a heat-recovery steam generator and duct burners, selective catalytic reduction for emissions control, and a General Electric steam turbine. Nominal gross rating approximately 62–65 MW. The facility was constructed by Ansaldo Industria of America and entered commercial operation in December 1994 as a Kamine/Besicorp project. RG&E acquired it through legal settlement in December 1998 and divested it to Alliance Energy in November 2013.
Overview
Key fields
- Nameplate capacity
- 67 MW
Canonical EIA plant baseline.
- Registry anchor
- Plant 7784
plant-7784
Structured profile
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Alliance Energy New York, LLC
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 42 MW 40 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CT | Jun 1994 | Operating |
| 2 | 25 MW 20 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CA | Jun 1994 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 67 MW
- National rank
- #482
- NY rank
- #28
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Nearby substations
HIFLD infrastructure inventoryRelated parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
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Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Owner | Allegany Generating Station LLC | Current owner and operator entity |
| Operator / parent company | Owner/operator group; listed as owner/operator on official facility page | |
| EPC contractor / construction contractor | Ansaldo Industria of America | EPC contractor and constructor |
| Construction contractor / O&M provider | Commissioning, start-up, testing, and O&M contractor | |
| Grid selection | plant:plant-7784 | Canonical asset page /nyiso/assets/plant/allegany-cogen. |
Reporting portfolio
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generators enter operationEIA-860
EIA-860 lists generator 1, generator 2 with this operating date.
- NYPSC approval of transfer from RG&E to Allegany Generating Station LLCdocuments.d...
The New York Public Service Commission approved transfer of RG&E's ownership interests in the Allegany Generating Station to Allegany Generating Station LLC, a subsidiary of Alliance Energy New York LLC. The estimated purchase price was $1.8 million and the estimated pre-tax sale loss was approximately $3.5 million.
- Sale closing and ownership transfer to Allegany Generating Station LLCnyisoviewer...
RG&E completed the sale of the Allegany generating station to Allegany Generating Station LLC on November 1, 2013. This was the effective date of the Large Generator Interconnection Agreement (NYISO Service Agreement No. 2036) between RG&E and Allegany.
Sources
Common questions about Allegany Cogen
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
How big is Allegany Cogen?
Allegany Cogen has a reported capacity of 67 MW. Source: EIA Form 860M.
What kind of plant is Allegany Cogen?
Allegany Cogen is a Natural Gas Fired Combined Cycle facility in Allegany County, NY, participating in the NYISO market.
Where is Allegany Cogen located?
Allegany Cogen is in Allegany County, NY, inside the NYISO balancing area.
Who operates Allegany Cogen?
Allegany Cogen is operated by Allegany Generating Station, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
How much electricity does Allegany Cogen generate?
Allegany Cogen reported 15.5 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
How does Allegany Cogen compare to other plants?
By capacity, Allegany Cogen ranks #482 of 538 operating plants of the same technology nationally. It ranks #28 of 39 in NY.
Co-located assets
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.
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