Maple Ridge Wind Farm
EDP - Energias de Portugal, S.A. - Lewis County - NYISO
Maple Ridge Wind Farm is a 321.2 MW onshore wind facility on the Tug Hill Plateau in Lewis County, New York, spanning the towns of Lowville, Martinsburg, Harrisburg, and Watson. It consists of 195 Vestas V82-1.65 MW wind turbines. The project is jointly owned by EDP Renewables North America and Avangrid Renewables (each holding approximately 50%) and operates as an independent power producer in the NYISO balancing area. The facility interconnects at 230 kV to the Niagara Mohawk transmission system. Originally developed by PPM Energy and Zilkha Renewable Energy and announced for construction in April 2005, the project was built in phases with Phase I (231 MW, 140 turbines) commencing operations in January 2006 and Phase II (91 MW, 55 turbines) commencing operations in September 2007. Construction created hundreds of jobs and the facility generates approximately 1.2 TWh annually, sufficient to power approximately 138,000 New York homes. The project spans approximately 21,000 acres, with the turbine footprint occupying less than 1% of total acreage, allowing concurrent agricultural and wildlife use on landowner property.
Overview
Key fields
- Nameplate capacity
- 321.2 MW
Canonical EIA plant baseline.
- Registry anchor
- Plant 56290
plant-56290
Structured profile
- Technology
- Onshore Wind Turbine
- Operator
- Horizon Wind Energy LLC
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 137 MW 137 MW summer | Onshore Wind Turbine Wind · WT | Dec 2005 | Operating |
| 1A | 61.1 MW 61.1 MW summer | Onshore Wind Turbine Wind · WT | Jan 2006 | Operating |
| 2 | 33 MW 33 MW summer | Onshore Wind Turbine Wind · WT | Jun 2006 | Operating |
| 3 | 90.1 MW 91 MW summer | Onshore Wind Turbine Wind · WT | Dec 2006 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 321.2 MW
- National rank
- #47
- NY rank
- #1
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Nearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
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Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Equipment supplier | Turbine manufacturer and supplier | |
| Construction contractor | Wind-turbine foundation contractor | |
| Grid selection | plant:plant-56290 | Canonical asset page /nyiso/assets/plant/maple-ridge-wind-farm. |
Reporting portfolio
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Phase I turbine constructiontethys.pnnl...
120 Vestas V82 wind turbines constructed in Phase I project area.
- Maple Ridge construction announcedavangrid.com
PPM Energy and Zilkha Renewable Energy announced the start of construction of the Maple Ridge Wind Farm (formerly called Flat Rock Wind Power Project). Announcement indicated commercial operation expected by end of 2005.
- Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 1A with this operating date.
- Phase IA and II construction beginstethys.pnnl...
Remaining 75 turbines in Phase IA and Phase II began construction.
- Generator enters operationEIA-860
EIA-860 lists generator 2 with this operating date.
- Maple Ridge Wind Farm dedication ceremonyavangrid.com
Maple Ridge Wind Farm dedicated in Lowville, New York. Project confirmed as New York's largest wind facility built that year. Phase I: 140 turbines (231 MW); Phase II turbines under construction to bring total to 195 turbines and approximately 320 MW.
- Phase IA and II turbine construction completedtethys.pnnl...
Construction of remaining 75 Phase IA and Phase II turbines completed (May–December 2006).
- PPM Energy rebranded to Iberdrola Renewablesavangrid.com
PPM Energy rebranded as Iberdrola Renewables, Inc. as part of Iberdrola corporate structure consolidation.
- Iberdrola USA and UIL Holdings merge to form Avangridavangrid.com
Iberdrola USA and UIL Holdings Corporation merged to form Avangrid, Inc., consolidating Iberdrola's U.S. renewable energy assets under Avangrid Renewables.
Sources
Common questions about Maple Ridge Wind Farm
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
How big is Maple Ridge Wind Farm?
Maple Ridge Wind Farm has a reported capacity of 321.2 MW. Source: EIA Form 860M.
What kind of plant is Maple Ridge Wind Farm?
Maple Ridge Wind Farm is a Onshore Wind Turbine facility in Lewis County, NY, participating in the NYISO market.
Where is Maple Ridge Wind Farm located?
Maple Ridge Wind Farm is in Lewis County, NY, inside the NYISO balancing area.
Who operates Maple Ridge Wind Farm?
Maple Ridge Wind Farm is operated by Flat Rock Windpower, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
How much electricity does Maple Ridge Wind Farm generate?
Maple Ridge Wind Farm reported 588 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
How does Maple Ridge Wind Farm compare to other plants?
By capacity, Maple Ridge Wind Farm ranks #47 of 1,362 operating plants of the same technology nationally. It ranks #1 of 32 in NY.
Co-located assets
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
Related assets
Similar plants ranked by technology, capacity, and distance.