# Streator Cayuga Ridge South

PJM Onshore Wind Turbine · https://askthegrid.com/assets/facilities/streator-cayuga-ridge-south

Streator Cayuga Ridge South is a wind power facility with 300 MW of EIA-reported operating capacity in Livingston County, Illinois, registered as EIA Plant ID 57094. Avangrid Power LLC is the registered plant entity or operator. When it began operation in March 2010, the 300 MW Streator Cayuga Ridge South Wind Farm became Illinois’s largest wind project.
COMED load zone · 34 kV · Commonwealth Edison Co.

## Key facts

- Technology: Onshore Wind Turbine
- Power capacity: 300 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM Interconnection, LLC

## Source-backed facts

- Canonical name: Streator Cayuga Ridge South — MBR | Index · confidence: high
- Identifiers.0: {"value":"57094","system":"EIA plant ID"} — MBR | Index · confidence: high
- Identifiers.2: {"value":"1","system":"EIA generator ID"} — MBR | Index · confidence: high
- Identifiers.7: {"value":"CAYUGA RIDGE WF","system":"PJM RPM capacity resource name"} — Sheet1 · confidence: medium
- Parties.2: {"relationship":"Developer and historical owner; successor to Iberdrola Renewables","name":"Avangrid Renewables, LLC","official_url":"https://www.avangrid.com/"} — Source · confidence: medium
- Parties.4: {"relationship":"VPPA / REC counterparty","name":"Statkraft","official_url":"https://www.statkraft.com/"} — Avangrid and Statkraft Establish U.S. Relationship with VPPA · confidence: high
- Product url: https://assets.siemens-energy.com/dam/468e4bf3-2c20-435d-a838-b36f00aa86c0/siemens-gamesa-on-aftermarket-product-catalogue-pdf_Original%20file.pdf — Source · confidence: medium
- Description: Streator Cayuga Ridge South is a 300 MW onshore wind farm in Livingston County near Odell, Illinois, operating within PJM and interconnected through Commonwealth Edison. Iberdrola Renewables developed the project, while Avangrid Renewables and Avangrid Power LLC are identified in subsequent ownership and operating records. Construction began in October 2008 and continued through March 2010, when the plant began commercial operation. The plant record reports no uprate or derate and continues to classify the facility as operating. — Source · confidence: medium
- Quality notes: ["EIA-based plant records identify one operating generator with 300 MW of nameplate capacity, 150 Gamesa G87-2.0 turbines, and no completed uprate or derate.","The December 2015 creation of AVANGRID was a corporate merger between Iberdrola USA and UIL Holdings, not a documented project-level asset sale.","The April 2024 Statkraft arrangement was a short-term VPPA for renewable-energy certificates and is not an acquisition or sale of the wind farm.","No expansion, retirement, or repowering milestone is identified in the plant and project records."] — Avangrid and Statkraft Establish U.S. Relationship with VPPA · confidence: medium
- Timeline.1: {"event":"Output marketing / reverse RFP","date":"2008-05-28","detail":"Iberdrola Renewables announced a reverse RFP for the output, RECs, and applicable capacity of the planned 300 MW Streator Cayuga Ridge South project."} — Iberdrola Renewables Announces Reverse RFP for 593 MW of Wind Farm Renewable Energy Proposals - Avangrid · confidence: high
- Timeline.2: {"event":"Construction start","date":"2008-10","detail":"Construction began in October 2008 and continued with winter breaks through March 2010."} — Source · confidence: high
- Timeline.4: {"event":"TVA offtake contract","date":"2010-01-14","detail":"TVA announced a contract with Iberdrola Renewables for delivery of up to 300 MW from the Streator Cayuga Ridge project, beginning in mid-2010."} — TVA Contracts For More Renewable Wind Power · confidence: high
- Timeline.5: {"event":"Commercial operation","date":"2010-03","detail":"The 300 MW facility began generating power and entered commercial operation in March 2010."} — Source · confidence: high
- Timeline.7: {"event":"VPPA / REC transaction","date":"2024-04-08","detail":"Avangrid and Statkraft announced a short-term VPPA under which Statkraft would receive RECs from the 300 MW wind farm."} — Avangrid and Statkraft Establish U.S. Relationship with VPPA · confidence: high
- Commercial parties.2: {"relationship":"Developer and historical owner","name":"Avangrid Renewables, LLC","detail":"Identified as the project developer or sponsor in later asset records and as the successor renewables business to Iberdrola Renewables.","official_url":"https://www.avangrid.com/"} — Iberdrola Renewables Announces Reverse RFP for 593 MW of Wind Farm Renewable Energy Proposals - Avangrid · confidence: medium
- Commercial parties.3: {"relationship":"Predecessor developer and owner/operator","name":"Iberdrola Renewables","detail":"Developed and operated the project during its construction and initial commercial period and marketed its output through the 2008 reverse RFP and 2010 TVA contract.","official_url":"https://www.iberdrola.com/"} — Iberdrola Renewables Announces Reverse RFP for 593 MW of Wind Farm Renewable Energy Proposals - Avangrid · confidence: high
- Commercial parties.5: {"relationship":"Construction and turbine-installation contractor","name":"Mortenson Construction","detail":"The project publication identifies Mortenson Construction for road, foundation, and turbine-installation work.","official_url":"https://www.mortenson.com/"} — Source · confidence: high
- Commercial parties.6: {"relationship":"Turbine and component supplier","name":"Gamesa USA","detail":"The project publication identifies Gamesa USA for hub and nacelle assembly; plant records identify Gamesa G87-2.0 as the predominant turbine model.","official_url":"https://www.siemensgamesa.com/"} — TVA Contracts For More Renewable Wind Power · confidence: high
- Commercial parties.7: {"relationship":"Power offtaker","name":"Tennessee Valley Authority","detail":"TVA contracted for delivery of up to 300 MW from the project beginning in mid-2010.","official_url":"https://www.tva.com/"} — Avangrid and Statkraft Establish U.S. Relationship with VPPA · confidence: high
- Prior owner: Iberdrola Renewables — Iberdrola Renewables Announces Reverse RFP for 593 MW of Wind Farm Renewable Energy Proposals - Avangrid · confidence: medium

## Timeline

- 2008-05-28 — Output marketing / reverse RFP
  Iberdrola Renewables announced a reverse RFP for the output, RECs, and applicable capacity of the planned 300 MW Streator Cayuga Ridge South project.
  Source: Iberdrola Renewables Announces Reverse RFP for 593 MW of Wind Farm Renewable Energy Proposals - Avangrid (https://www.avangrid.com/w/iberdrola-renewables-announces-reverse-rfp-for-593-mw-of-wind-farm-renewable-energy-proposals)
- 2008-10 — Construction start
  Construction began in October 2008 and continued with winter breaks through March 2010.
  Source: Source (https://www.avangrid.com/documents/453723/3564182/Landowner-News-August2010.pdf/fee3b8b2-e0ff-c6d0-e620-61a31530e9f5)
- 2010-03 — Commercial operation
  The 300 MW facility began generating power and entered commercial operation in March 2010.
  Source: Source (https://www.nrdc.org/sites/default/files/wind-communities-ib.pdf)
- 2024-04-08 — VPPA / REC transaction
  Avangrid and Statkraft announced a short-term VPPA under which Statkraft would receive RECs from the 300 MW wind farm.
  Source: Avangrid and Statkraft Establish U.S. Relationship with VPPA (https://www.statkraft.com/newsroom/news-and-stories/2024/avangrid-and-statkraft-establish-u.s.-relationship-with-vppa)

## Sources

- [Avangrid and Statkraft Establish U.S. Relationship with VPPA](https://www.statkraft.com/newsroom/news-and-stories/2024/avangrid-and-statkraft-establish-u.s.-relationship-with-vppa) — statkraft.com · tier other
- [MBR | Index](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=328) — mbrweb.ferc.gov · tier regulatory
- [Sheet1](https://www.pjm.com/-/media/DotCom/markets-ops/rpm/rpm-auction-info/2025-2026/2025-2026-rpm-existing-resource-list-post.xlsx) — pjm.com · tier other
- [Iberdrola Renewables Announces Reverse RFP for 593 MW of Wind Farm Renewable Energy Proposals - Avangrid](https://www.avangrid.com/w/iberdrola-renewables-announces-reverse-rfp-for-593-mw-of-wind-farm-renewable-energy-proposals) — avangrid.com · tier other
- [Source](https://www.avangrid.com/documents/5400118/5398970/iri-solar-development-factsheet.pdf/e0925c73-1088-addb-6d56-47a43979d938?t=1664222447947) — avangrid.com · tier other
- [Source](https://avangrid.com/w/avangrid-in-the-western-u.s.-copy-) — avangrid.com · tier other
- [Source](https://www.avangrid.com/documents/453723/3564182/Landowner-News-August2010.pdf/fee3b8b2-e0ff-c6d0-e620-61a31530e9f5) — avangrid.com · tier other
- [Source](https://assets.siemens-energy.com/dam/468e4bf3-2c20-435d-a838-b36f00aa86c0/siemens-gamesa-on-aftermarket-product-catalogue-pdf_Original%20file.pdf) — assets.siemens-energy.com · tier other
- [Source](https://www.nrdc.org/sites/default/files/wind-communities-ib.pdf) — nrdc.org · tier other
- [TVA Contracts For More Renewable Wind Power](https://invenergy.com/news/tva-contracts-for-more-renewable-wind-power) — invenergy.com · tier other
- [Iberdrola Factbook 2026](https://www.iberdrola.com/documents/20125/41740/Iberdrola_factbook_2026.pdf) — iberdrola.com · tier other
- [Company Extends Operations of 1,185-MW Power Plant in Illinois | American Public Power Association](https://www.publicpower.org/periodical/article/company-extends-operations-1185-mw-power-plant-illinois) — publicpower.org · tier other
- [Avangrid Announces Construction of its Fifth Wind Farm in ...](https://www.avangrid.com/w/avangrid-announces-construction-of-its-fifth-wind-farm-in-illinois) — avangrid.com · tier other

## Data quality

- EIA-based plant records identify one operating generator with 300 MW of nameplate capacity, 150 Gamesa G87-2.0 turbines, and no completed uprate or derate. The December 2015 creation of AVANGRID was a corporate merger between Iberdrola USA and UIL Holdings, not a documented project-level asset sale. The April 2024 Statkraft arrangement was a short-term VPPA for renewable-energy certificates and is not an acquisition or sale of the wind farm. No expansion, retirement, or repowering milestone is identified in the plant and project records.

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