# Ravenswood

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/ravenswood

Ravenswood Generating Station is a 2,050 MW fossil-fueled power plant in Long Island City, Queens, owned by Rise Light & Power (a wholly owned affiliate of LS Power acquired by NRG Energy on January 30, 2026). The station comprises three steam-turbine generator units (Units 10, 20, and 30) totaling approximately 1,800 MW dating from 1963–1965, plus one 2004 combined-cycle natural-gas unit (Unit 40) rated approximately 250 MW. The 17 simple-cycle peaking units were permanently retired by 2024. All units are dual-fuel capable, primarily using natural gas with #2 fuel oil backup capability. The facility is interconnected to NYISO transmission through the 345 kV Rainey Substation (Unit 30) and 138 kV Vernon Substation (Units 10, 20, and 40). Ravenswood provides more than 20% of New York City's local generation capacity and serves as a critical dispatchable resource for grid reliability. Rise Light & Power has proposed the Renewable Ravenswood vision, which includes offshore-wind repowering, upstate renewable interconnections, energy storage, and clean thermal-energy initiatives to transition the site away from fossil generation.

## Key facts

- Technology: Natural Gas Steam Turbine, Natural Gas Fired Combined Cycle
- Power capacity: 2095.5 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Location.county: Queens — nyserda.ny.gov · confidence: review_required
- Location.city: Long Island City — nyserda.ny.gov · confidence: review_required
- Capacity.current mw: 2050 MW — riselight.com · confidence: review_required
- Capacity.historical maximum: 2500 MW — nyserda.ny.gov · confidence: review_required
- Site.acres: 28 acres — riselight.com · confidence: review_required
- Transmission.interconnection voltage: 345 kV — nyserda.ny.gov · confidence: review_required
- Unit 30.historical significance: world's largest electric generating unit when placed in service in 1965 — investor.conedison.com · confidence: review_required

## Timeline

- 1999-01-27 — Sale from Con Edison to KeySpan
  Con Edison sold the 1,753-MW Ravenswood Generating Station and 415-MW Ravenswood Gas Turbines to KeySpan Energy for $597 million
  Source: investor.conedison.com (https://investor.conedison.com/news-releases/news-release-details/con-edison-completes-sale-ravenswood-power-plant-queens/)
- 2008-08-26 — Sale from National Grid to TransCanada
  National Grid (KeySpan successor) sold Ravenswood (2,480 MW) to TransCanada Corporation for US$2.9 billion
  Source: sec.gov (https://www.sec.gov/Archives/edgar/data/1004315/000130901408000492/exhibit1.htm)
- 2017-06-05 — Acquisition by LS Power
  TransCanada sold Ravenswood to LS Power (via Helix Generation, LLC affiliate) for approximately US$2.1 billion as part of broader sale of 3,950 MW Northeast portfolio
  Source: tcenergy.com (https://www.tcenergy.com/announcements/2017/2017-06-05transcanada-completes-sale-of-u.s.-northeast-power-assets)
- 2024 — Completion of permanent peaker retirement
  Rise Light & Power completed permanent retirement of all 17 fossil-fueled peaking generators; station maximum capacity reduced from approximately 2,500 MW to 2,000 MW
  Source: nyserda.ny.gov (https://www.nyserda.ny.gov/About/Publications/Featured-Case-Studies/Ravenswood-Generating-Station)

## Sources

- [investor.conedison.com](https://investor.conedison.com/news-releases/news-release-details/con-edison-completes-sale-ravenswood-power-plant-queens/) — investor.conedison.com · tier public_source
- [investors.nrg.com](https://investors.nrg.com/news-releases/news-release-details/nrg-energy-completes-acquisition-13-gw-power-generation-and-ci) — investors.nrg.com · tier public_source
- [portal.ct.gov](https://portal.ct.gov/deep/public-notices/public-notices-proposed-actions---opportunity-for-comment/proposed-permits-or-actions-from-adjacent-states/ravenswood-operations-llc-ravenswood-generating-station) — portal.ct.gov · tier authoritative
- [riselight.com](https://riselight.com/about-rise-light-power/) — riselight.com · tier public_source
- [riselight.com](https://riselight.com/ravenswood-generating-station/) — riselight.com · tier public_source
- [mizuhogroup.com](https://www.mizuhogroup.com/beyond-the-obvious/mizuho-recognized-for-funding-essential-energy-projects-in-the-americas) — mizuhogroup.com · tier public_source
- [nyserda.ny.gov](https://www.nyserda.ny.gov/-/media/Project/Nyserda/Files/Programs/Offshore-Wind/ATT_Public-Interconnection-and-Deliverability-Plan.pdf) — nyserda.ny.gov · tier authoritative
- [nyserda.ny.gov](https://www.nyserda.ny.gov/About/Publications/Featured-Case-Studies/Ravenswood-Generating-Station) — nyserda.ny.gov · tier authoritative
- [sec.gov](https://www.sec.gov/Archives/edgar/data/1004315/000130901408000492/exhibit1.htm) — sec.gov · tier authoritative
- [tcenergy.com](https://www.tcenergy.com/announcements/2017/2017-06-05transcanada-completes-sale-of-u.s.-northeast-power-assets) — tcenergy.com · tier public_source

## Data quality

- Capacity discrepancy resolved: The anchor EIA record lists 2,095.5 MW, but NYSERDA describes post-2024-retirement capacity as approximately 2,000 MW, and Rise Light & Power's official site states 2,050 MW. The 2,050 MW figure from Rise's official public statement is selected as the current operating rating. The historical pre-retirement maximum was approximately 2,500 MW (three ~1,800 MW steam units plus ~250 MW combined cycle plus ~500 MW peakers). Operator entity names vary between sources: NYISO 2025 Gold Book lists 'Ravenswood Operations, LLC' while earlier NYISO records referenced 'Helix Ravenswood, LLC'. Ravenswood Operations, LLC is the regulatory/operating entity name, while Helix Ravenswood, LLC is the parent holding company. Equipment nomenclature: The candidate research identifies units as Units 10, 20, 30, and 40 in some sources and as ST 01, ST 02, ST 03, and CC 04 in NYISO regulatory records. These are identical units with dual naming conventions. Ownership timeline: The NRG acquisition closed January 30, 2026 as a portfolio transaction covering 18 generation facilities totaling ~13 GW and CPower; Ravenswood was one asset in that broader acquisition. The preliminary total portfolio consideration was ~$10.579 billion; no Ravenswood-specific allocation has been published. Refinancing transaction: The Mizuho-arranged $850 million Ravenswood refinancing is confirmed as a debt refinancing, not a sale transaction. No closing date or full lender syndicate is disclosed in the available sources. Unit 40 nameplate capacity: The state permit notice lists Unit 40 as a combined-cycle configuration but does not specify a gas-turbine-only nameplate. NYISO records list the entire CC unit at 250 MW plate rating. The GE 7FA product page indicates 201–239 MW simple-cycle output, but combined-cycle efficiency is >60%, so the integrated unit rating is ~250 MW. Site acreage: Multiple sources cite 28 waterfront acres; one regulatory exhibit cites 27 acres with 7 acres dedicated to peaker units (which were later retired). Big Allis nameplate: The record states one million kilowatts (1,000 MW) as the power output capacity; the NYISO and industry records list the unit as 1,027 MW rated capacity. The designation 'one million kilowatts' in historical sources is a historical descriptor matching the 1960s nameplate announcement.

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Canonical page: https://askthegrid.com/nyiso/assets/plant/ravenswood

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