# East River

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/east-river

East River Generating Station is a Con Edison electricity-and-steam cogeneration facility at 701–827 East 14th Street in Manhattan, New York. The station combines legacy natural-gas-fired steam-turbine equipment with two natural-gas-fired combustion turbines, heat-recovery steam generators, and duct-firing equipment installed as part of the 2001–2005 East River Repowering Project. The facility uses natural gas as its primary fuel and low-sulfur distillate as emergency backup. The repowering increased the complex from approximately 300 MW to 660 MW electric capacity and expanded steam generation from 2.7 to 5.7 million pounds per hour. East River is the only generation source located within the lower-Manhattan load pocket and is the largest and most strategically located production resource for Con Edison's steam system, supplying over half of New York City's steam system capacity.

## Key facts

- Technology: Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine
- Power capacity: 716.2 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Identity.owner name: Consolidated Edison Company of New York, Inc. — extapps.dec.ny.gov · confidence: review_required
- Equipment.combustion turbine capacity: 180 MW — ccj-online.com · confidence: review_required
- Equipment.hrsg steam capacity: 1600 Mlb/hr — documents.dps.ny.gov · confidence: review_required
- History.repowering capacity increase: 360 MW — power-eng.com · confidence: review_required
- History.steam capacity expansion: 5.7 Mlb/hr — power-eng.com · confidence: review_required

## Timeline

- 1926-11-23 — Initial construction and commercial operation
  The original East River Generating Station was constructed by New York Edison Company and began operating in 1926.
  Source: en.wikipedia.org (https://en.wikipedia.org/wiki/East_River_Generating_Station)
- 1929-10 — Early expansion with third generator
  A third 160 MW generator entered service at East River in October 1929, together with three new boilers.
  Source: en.wikipedia.org (https://en.wikipedia.org/wiki/East_River_Generating_Station)
- 1946 — Major postwar expansion planning
  Con Edison began planning to nearly double the capacity of the East River Generating Station by adding two new generators and boilers.
  Source: en.wikipedia.org (https://en.wikipedia.org/wiki/East_River_Generating_Station)
- 1951 — Postwar expansion—Units 5 and 6
  Two 125 MW generators, Units 5 and 6, were placed into service at East River in 1951.
  Source: en.wikipedia.org (https://en.wikipedia.org/wiki/East_River_Generating_Station)
- 1999-09-27 — East River Repowering Project announced
  Con Edison announced plans to repower its East River Generating Station to replace steam and electric capacity from the planned closure of Waterside Generating Station.
  Source: investor.conedison.com (https://investor.conedison.com/news-releases/news-release-details/con-edison-files-pre-application-modify-power-plant/)
- 2000 — Article X application filed
  Con Edison filed an Article X application with the New York Public Service Commission for the East River Repowering Project, projected to generate $360 million in total capital costs.
  Source: documents.dps.ny.gov (https://documents.dps.ny.gov/public/MatterManagement/CaseMaster.aspx?MatterCaseNo=99-F-1314)
- 2001 — Repowering project construction commenced
  Con Edison undertook the East River Repowering Project to install two natural-gas-fired combustion turbines, two heat-recovery steam generators, a demineralization facility, and associated process piping.
  Source: power-eng.com (https://www.power-eng.com/environmental-emissions/east-river-repowering-project-design-construction-and-operation/)

## Sources

- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7BC0EB3058-98E9-4632-B5CC-DC1771F089A8%7D) — documents.dps.ny.gov · tier authoritative
- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/MatterManagement/CaseMaster.aspx?MatterCaseNo=99-F-1314) — documents.dps.ny.gov · tier authoritative
- [en.wikipedia.org](https://en.wikipedia.org/wiki/East_River_Generating_Station) — en.wikipedia.org · tier public_source
- [extapps.dec.ny.gov](https://extapps.dec.ny.gov/data/dar/afs/permits/262060001200016_r1.pdf) — extapps.dec.ny.gov · tier authoritative
- [extapps.dec.ny.gov](https://extapps.dec.ny.gov/data/dar/afs/permits/262060001200016_r1_0.pdf) — extapps.dec.ny.gov · tier authoritative
- [investor.conedison.com](https://investor.conedison.com/news-releases/news-release-details/con-edison-files-pre-application-modify-power-plant/) — investor.conedison.com · tier public_source
- [ccj-online.com](https://www.ccj-online.com/combined-cycle-journal-number-50/east-river-generating-station-new-practices-for-resiliency/) — ccj-online.com · tier public_source
- [power-eng.com](https://www.power-eng.com/environmental-emissions/east-river-repowering-project-design-construction-and-operation/) — power-eng.com · tier public_source

## Data quality

- The station was constructed by New York Edison Company and began operating in 1926, but the evidence does not document a specific acquisition or ownership-transfer transaction when the facility later became associated with Consolidated Edison. The 2000 Article X application estimated $360 million in total project capital cost for the East River Repowering Project, including electric and steam interconnections. This is a project-cost estimate provided by the applicant, not a final financing amount, sale price, or portfolio transaction value. The 2005 Con Edison annual report states that the repowering project added 292 MW on a summer rating, while other regulatory materials describe approximately 300 MW summer and 370 MW winter capacity for the repowering section. The supplied anchor capacity of 716.2 MW represents the sum of all four current plant generators (156.2, 200, 180, and 180 MW) and reflects the entire facility, not just the repowering addition. The separate East River Energy Storage Project (100 MW battery storage in Astoria) and East River ESS, LLC financing proceeding are distinct legal entities and projects, not part of this natural-gas generating station, and were excluded from the registry entry. The facility permit identifies the primary configuration as a truncated combined-cycle facility with combustion turbines, HRSGs, and legacy boilers and steam turbines. The repowering project is described as approximately 360 MW of new capacity in some sources and 292 MW summer-rating added capacity in others; these represent different measurement approaches for the same installation. The 2024 plant record reports generation through March 2026, and all four current generators are marked as Operating.

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