Kern County · CAISO
Alta Wind Energy Center III is a wind power facility with 150 MW of EIA-reported operating capacity in Kern County, California, registered as EIA Plant ID 57292. Clearway Energy, Inc. is the public owner or developer; Alta Wind III, LLC is the registered plant entity or operator. The facility interconnects at Windhub Substation at 230 kV.
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EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
Alta Wind III, LLC · Kern County · CAISO
230 kV · Southern California Edison Company
Onshore Wind Turbine
Alta Wind Energy Center III is operating.
230 kV · Southern California Edison Company
CAISO
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| AW03 | 150 MW 150 MW summer | Onshore Wind Turbine Wind · WT | Feb 2011 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
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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, establishing the predecessor development ownership for the later Alta III project.
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.
Terra-Gen closed a $1.2 billion financing package for Alta Wind II–V, the four-project 570 MW phase that included Alta III. Proceeds were designated to fund construction, which was expected to begin immediately.
Delivery and commissioning of the Vestas turbines for Alta Projects II–V were scheduled to begin in October 2010.
EIA-860 lists generator AW03 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Alta Wind Energy Center III has a reported capacity of 150 MW. Source: EIA Form 860.
Alta Wind Energy Center III is a Onshore Wind Turbine facility in Kern County, CA, participating in the CAISO market.
Alta Wind Energy Center III is in Kern County, CA, inside the CAISO balancing area.
Alta Wind Energy Center III is operated by Alta Wind III, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Alta Wind Energy Center III reported 363.2 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
Alta Wind Energy Center III interconnects at Windhub Substation, on the Southern California Edison Company system.
By capacity, Alta Wind Energy Center III 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.
Similar plants ranked by technology, capacity, and distance.
Wind · 150 MW
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Wind · 150 MW
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