Alta Wind Energy Center I is a wind power facility with 150 MW of EIA-reported operating capacity in Kern County, California, registered as EIA Plant ID 57282. Alta Wind I, LLC is the registered plant entity or operator. Commercial operation began in January 2011.
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
Alta Wind I, LLC · Kern County · CAISO
220 kV · Southern California Edison Co.
Best-supported operating milestone.
Onshore Wind Turbine
Alta Wind Energy Center I is currently operating; a closure or retirement is listed for August 2, 2026.
Alta Wind Energy Center I is currently operating; a closure or retirement is listed for August 2, 2026.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| AW01 | 150 MW 150 MW summer | Onshore Wind Turbine Wind · WT | Jan 2011 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
Terra-Gen acquired the Alta Wind Energy Center development platform from Allco Finance.
220 kV · Southern California Edison Co.
CAISO
CAISO · Kern County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Alta Project I had closed financing and commenced construction.
Alta Project I was anticipated to begin commercial operations in January 2011, and the plant record identifies AW01 as operating from January 2011.
Terra-Gen announced an agreement to sell its 947 MW Alta Wind I-V, X, XI, and Realty projects to NRG Yield.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Alta Wind Energy Center I has a reported capacity of 150 MW. Source: EIA Form 860.
Alta Wind Energy Center I is a Onshore Wind Turbine facility in Kern County, CA, participating in the CAISO market.
Alta Wind Energy Center I is in Kern County, CA, inside the CAISO balancing area.
Alta Wind Energy Center I is operated by Alta Wind I, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Alta Wind Energy Center I reported 434.7 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
Alta Wind Energy Center I interconnects at Windhub Substation, on the Southern California Edison Co. system.
By capacity, Alta Wind Energy Center I ranks #444 of 1,362 operating plants of the same technology nationally. It ranks #9 of 110 in CA.
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.
