# Marble River Wind Farm

NYISO wind_power_plant · https://askthegrid.com/nyiso/assets/plant/marble-river-wind-farm

A 215.25 MW onshore wind farm in Clinton County, New York, near Churubusco, Clinton, and Ellenburg. The facility is located on approximately 17,000 acres of leased land and generated approximately 145.8 GWh during December 2025 through March 2026.

## Key facts

- Technology: Onshore Wind Turbine
- Power capacity: 215.3 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Asset.capacity mw: 215.25 MW — documents.dps.ny.gov · confidence: review_required
- Asset.turbine unit capacity mw: 3.075 MW per turbine — nerc.com · confidence: review_required
- Asset.commercial operation date: November 2012 — documents.dps.ny.gov · confidence: review_required
- Asset.site acres: 17000 acres — edp.com · confidence: review_required
- Asset.generator count original authorization: 109 turbines — documents.dps.ny.gov · confidence: review_required
- Project.construction jobs: 307 jobs — edp.com · confidence: review_required
- Project.permanent jobs: 13 jobs — edp.com · confidence: review_required
- Project.economic impact: 52800000 USD — edp.com · confidence: review_required
- Project.annual water savings: 382 million gallons — edp.com · confidence: review_required

## Timeline

- 2012-08-31 — Construction Progress Report
  August 2012 construction status update reported 93% project completion, with foundations and HV work complete. Turbine delivery at 85%, installation at 75%, mechanical completion at 56%, and commissioning at 31%.
  Source: documents.dps.ny.gov (https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B6F4511F1-BE94-4AE5-AA9E-8872BB6D3ED8%7D)
- 2012-11-30 — Commercial Operation Date
  Marble River Wind Farm began commercial operation in November 2012. Project capacity reported as 215.25 MW and subsequently 215.2 MW in NYISO records.
  Source: documents.dps.ny.gov (https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7BB621428E-B52B-45E7-ADC9-8700E6166D7E%7D)

## Sources

- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B06827E3A-5CEA-4978-984F-FEAFDA54A56C%7D) — documents.dps.ny.gov · tier authoritative
- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B22928EEC-D2F0-4B60-A8C0-8E7A8CF7D2B6%7D) — documents.dps.ny.gov · tier authoritative
- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7B6F4511F1-BE94-4AE5-AA9E-8872BB6D3ED8%7D) — documents.dps.ny.gov · tier authoritative
- [documents.dps.ny.gov](https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId=%7BB621428E-B52B-45E7-ADC9-8700E6166D7E%7D) — documents.dps.ny.gov · tier authoritative
- [edp.com](https://edp.com/en/investors/investor-information/market-notifications/acquisition-horizon-wind-energy) — edp.com · tier public_source
- [edp.com](https://edp.com/en/north-america/na/projects/marble-river-wind-farm) — edp.com · tier public_source
- [edp.com](https://www.edp.com/sites/default/files/document/2025-04/01Marble%2520River%2520Cover%2520Page%2520and%2520Cover%2520Letter.pdf) — edp.com · tier public_source
- [nerc.com](https://www.nerc.com/globalassets/our-work/reports/regional-audit-reports-of-registered-entities/npcc/2016/2015_public_npcc_mr.pdf) — nerc.com · tier public_source
- [vestas.com](https://www.vestas.com/content/dam/vestas-com/global/en/sustainability/reports-and-ratings/lcas/LCA_V112_Study_Report_2011.pdf.coredownload.inline.pdf) — vestas.com · tier public_source

## Data quality

- Asset identity is unambiguous: EIA plant ID 56857, owned and operated by Marble River, LLC per multiple official sources (PSC, NYISO, EIA, FERC). The original 2008 authorization contemplated 229 MW with 109 turbines. The 2011 modified project design reduced this to approximately 215 MW. The final built facility is documented in the NERC audit (2015) as 70 Vestas V112 turbines at 3.075 MW each, not the 103 × 2.1 MW configuration described in the pre-construction NYISO interconnection filing. EDP Renewables has controlled the project since 2007. No project-specific construction-loan amount, debt lender, tax-equity provider, EPC contract value, or acquisition price is identified in the candidate research. A 2018 Citigroup tax-equity transaction for $400 million relates to a 399 MW multi-state EDPR portfolio; Marble River is listed only as a related PPA asset and is not separately financed or valued in that record. The decommissioning plan (EDP-hosted, 2025) is prospective and describes lifecycle procedures, not an actual retirement or repowering event. Commercial operation date is confirmed as November 2012 by multiple sources (PSC filing, NYISO record). The project sold renewable energy attributes/RECs to NYSERDA under a long-term agreement. The April 2010 award was to Horizon Wind Energy LLC for a ten-year REC contract; Marble River, LLC continued this arrangement post-acquisition. No material exact-asset conflicts remain unresolved. Turbine count and configuration differences reflect design changes between pre-construction filing and built facility; the built asset (70 × 3.075 MW Vestas units) is well-documented by the NERC audit and regulatory records.

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