# Astoria Energy

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/astoria-energy

Astoria Energy is a natural-gas-fired combined-cycle generating facility located at 17-10 Steinway Street in Queens County, New York.

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 595 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Technical.site acres: 16 acres — documents.dps.ny.gov · confidence: review_required
- Operations.market resource ids: PTID 323581 (CC1), PTID 323582 (CC2) — nyisoviewer.etariff.biz · confidence: review_required

## Timeline

- 1999 — Development commenced
  SCS Energy LLC started development of the Astoria Energy project in 1999 and held an equity interest in the plant.
  Source: power-eng.com (https://www.power-eng.com/gas/nyc-astoria-500-mw-plant-opens/)
- 2020-06-22 — Sale closed
  Astoria Power Partners Holding LLC acquired 100% of the holdings in Astoria Project Partners LLC, the parent of Astoria Energy LLC. The same transaction also transferred approximately 55% of Astoria Project Partners II LLC (the parent of adjacent Astoria Energy II), but that portion relates to a separate facility.
  Source: engie-na.com (https://www.engie-na.com/ny_astoria_sale/)

## Sources

- [blasts.bermangrp.com](http://blasts.bermangrp.com/websites/ejelectric/pages/project-gallery/epc.htm) — blasts.bermangrp.com · tier public_source
- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B00BFC887-0000-CB32-A8B6-705EFD8C1B06%7D) — documents.dps.ny.gov · tier authoritative
- [nyisoviewer.etariff.biz](https://nyisoviewer.etariff.biz/viewerdoclibrary/Filing/Filing5155/Attachments/20240226_NYISOMTICmmnts_ConEdWvrRqst_Cmplt.pdf) — nyisoviewer.etariff.biz · tier public_source
- [engie-na.com](https://www.engie-na.com/ny_astoria_sale/) — engie-na.com · tier public_source
- [power-eng.com](https://www.power-eng.com/gas/nyc-astoria-500-mw-plant-opens/) — power-eng.com · tier public_source

## Data quality

- The exact facility is Astoria Energy I, distinctly identified as Astoria Energy LLC in NYISO and ownership records. Capacity figures are reported in multiple forms by different authoritative sources: the supplied anchor and contemporary reports cite 595 MW; S&P Global cites 582 MW summer / 668 MW winter; and owner transaction materials describe 615 MW. The discrepancy reflects standard industry practice of reporting peak nameplate versus seasonal operating ratings for thermal plants. The detailed generator capacities (170+170+255=595 MW nameplate) support the 595 MW figure as the gross nameplate basis. A 2006 press report described the initial plant as 500 MW and mentioned a proposed second 500 MW phase. No evidence supports construction of the second phase. Later S&P and owner sources report the operating facility at 582-615 MW depending on rating convention. A historical 2013 NRG Astoria repowering proposal concerns a separate oil-fired peaker plant in Astoria and is not included as an expansion or repowering of EIA plant 55375. The proposed NRG 2016-2018 four-unit combined-cycle repowering was identified in the NYISO 2010 Comprehensive Reliability Plan but no confirmation of implementation was found. No confirmed retirement event for Astoria Energy I was identified. The plant's generators are listed as operating in the most recent EIA 860 data. These are two separate operating facilities with different commercial arrangements. Original development began in 1999 with SCS Energy and various investor groups.

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