# Oswego Harbor Power

NYISO asset profile · https://askthegrid.com/assets/facilities/oswego-harbor-power

Oswego Harbor Power LLC - Oswego County - NYISO

Oswego Harbor Power is a 1,803.6 MW oil-fired steam-turbine generating station located at 261 Washington Boulevard in Oswego, New York, on the south shore of Lake Ontario. The facility consists of two operating units: Unit 5 (built 1975, 901.8 MW) and Unit 6 (built 1979, 901.8 MW), both primarily fueled by residual fuel oil. Unit 6 is also capable of limited operation on natural gas.

## Metrics

- **Nameplate capacity:** 1803.6 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 2594 — plant-2594

## Facts

- **Technology:** Petroleum Liquids
- **Operator:** Alpha Generation, LLC

## Related parties

- **Owner:** Oswego Harbor Power LLC — Legal facility owner ([source](https://stage.energy.gov/oe/ea-528-oswego-harbor-power-llc))
- **Owner:** ArcLight Energy Partners Fund VII, L.P. — Ultimate fund owner managed by ArcLight Capital Partners ([source](https://arclight.com/))
- **Investor:** ArcLight Capital Partners, LLC — Fund manager and portfolio owner ([source](https://arclight.com/))
- **Operator / asset manager:** Alpha Generation, LLC — Owner, operator, and manager of Oswego and broader portfolio ([source](https://www.alphagen.com/))
- **O&M provider / asset manager:** Eastern Generation LLC — Operations and maintenance provider and asset manager ([source](https://www.easterngeneration.com/))
- **Former owner:** NRG Energy, Inc. — 2021 seller and predecessor upstream owner (1999–2021) ([source](https://www.nrg.com/))
- **Former owner / interconnection counterparty / transmission owner:** Niagara Mohawk Power Corporation — 1999 predecessor co-owner and seller; current transmission interconnection and LDC counterparty ([source](https://www.nationalgrid.com/))
- **Former owner:** Rochester Gas & Electric Corporation — 1999 predecessor co-owner and seller ([source](https://www.rge.com/))
- **Equipment supplier:** Foster Wheeler — Boiler manufacturer
- **Equipment supplier:** Westinghouse — Steam turbine and generator manufacturer ([source](https://westinghousenuclear.com/))

## Sources

- [alphagen.com](http://alphagen.com/newsroom/press-releases/arclight-creates-alphagen-to-manage-one-of-the-largest-power-infrastructure-portfolios-in-the-united-states) — alphagen.com · public_source — Source retained for exact-record publication review.
- [documents.dps.ny.gov](http://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId={B59C3749-BA15-4960-BC0B-BBE5B8660165}&DocTitle=Order Approving Financing and Ruling on Transfer) — documents.dps.ny.gov · authoritative — Source retained for exact-record publication review.
- [documents.dps.ny.gov](http://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId={F0206090-0000-CF37-933C-D14C3BCE082A}) — documents.dps.ny.gov · authoritative — Source retained for exact-record publication review.
- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B5F1B2E46-F4DC-4C29-B761-99E0DCF8B23A%7D) — documents.dps.ny.gov · authoritative — Source retained for exact-record publication review.
- [investors.nrg.com](https://investors.nrg.com/news-releases/news-release-details/nrg-energy-completes-acquisition-oswego-generating-station) — investors.nrg.com · public_source — Source retained for exact-record publication review.
- [alphagen.com](https://www.alphagen.com/compliance/plant/oswego/) — alphagen.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/oswego-harbor-power
Website: [Oswego Harbor Power LLC](https://stage.energy.gov/oe/ea-528-oswego-harbor-power-llc)

Source: Ask the Grid — https://askthegrid.com/