# Sithe Independence Station

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/sithe-independence-station

Sithe Independence Station is a natural-gas-fired combined-cycle cogeneration facility located at 76 Independence Way in Oswego County, New York. The facility comprises six operating generators configured in two combined-cycle blocks, each with four GE Frame 7FA gas-turbine/heat-recovery steam-generator units with duct burners, plus two auxiliary boilers and one emergency diesel generator. The facility provides wholesale electric power to the NYISO market, retail power to specified customers and utilities, and thermal energy to a host facility. The plant operates at 345 kV transmission voltage and is interconnected via the Scriba and Clay substations.

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 1157.8 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Technical.site acres: 78 acres — documents.dps.ny.gov · confidence: review_required
- Operations.grid role: Wholesale electric-power generator and cogeneration facility — extapps.dec.ny.gov · confidence: review_required
- Operations.resource type: Natural gas-fired combined-cycle cogeneration facility — extapps.dec.ny.gov · confidence: review_required

## Sources

- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B359270D0-79A9-4BB0-B562-4B5A8A1E7944%7D) — documents.dps.ny.gov · tier authoritative
- [extapps.dec.ny.gov](https://extapps.dec.ny.gov/data/dar/afs/permits/735560004000026.pdf) — extapps.dec.ny.gov · tier authoritative
- [investors.exeloncorp.com](https://investors.exeloncorp.com/static-files/7be9796d-6676-4077-9efd-381bb9a992a8) — investors.exeloncorp.com · tier public_source
- [mbrweb.ferc.gov](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=205) — mbrweb.ferc.gov · tier authoritative
- [gevernova.com](https://www.gevernova.com/gas-power/products/gas-turbines/7f) — gevernova.com · tier public_source
- [power-eng.com](https://www.power-eng.com/operations-maintenance/dynegy-completes-sithe-energies-acquisition/) — power-eng.com · tier public_source

## Data quality

- The exact EIA plant is EIA plant code 54547 at 76 Independence Way in Oswego County, New York; similarly named Oswego-area facilities were excluded. The facility's structure includes four GE Frame 7FA gas-turbine/HRSG units as described in the official New York DEC permit. The plant records identify six operating generators, consistent with four gas turbines plus two steam turbines across the two combined-cycle blocks, plus auxiliary boilers and emergency equipment. All sources confirm the facility commenced operation in 1994. The facility's expansion from approximately 1,000 MW to approximately 1,080 MW appears to have been planned but the evidence distinguishes planned expansion from proven completion; current operating records show six generators consistent with post-expansion configuration. No retirement or repowering event was identified; current operating records show all six generators in operation through 2026. The 750 MW firm capacity sales agreement with Con Edison is documented through 2014; no later agreements were identified in the evidence.

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Canonical page: https://askthegrid.com/nyiso/assets/plant/sithe-independence-station

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