Alta Wind Energy Center III
Kern County
Overview
- Reported capacity
- 150 MW
- EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
- Technology
- Onshore Wind Turbine
- Primary generation technology.
- Registry anchor
- Plant 57292
- Alta Wind III, LLC · Kern County · CAISO
- Operating status
- Operating
- Grid connection
- Windhub Substation
- 230 kV · Southern California Edison Company
Infrastructure record
- Alternate name
- Alta Wind Energy Center I, II, III & IV
- Turbines
- 44
- Manufacturers
- Vestas
- In service
- 2011-01
Profile
- Grid role
- CAISO wind generation resource
- Grid connection
- Windhub Substation · 230 kV · Southern California Edison Company.
- Physical build
- Alta Wind Energy Center Phase III comprises 50 Vestas V90-3.0 MW onshore wind turbines.
- Financing
- On July 23, 2010, Terra-Gen closed approximately $1.2 billion of construction financing for the 570 MW Alta Wind II–V projects, including Alta III.
Structured profile
- Reported capacity
- 150 MW
Onshore Wind Turbine
- Operating status
- operating
Alta Wind Energy Center III is operating.
- Interconnection
- Windhub Substation
230 kV · Southern California Edison Company
- Location
- Kern County
CAISO
- Operator
Generation and physical site
EIA plant 57292 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Wind
- 150 MW
Generator records (1)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| AW03 | Onshore Wind Turbine | Operating | 150 | Unknown |
- Physical map location · OpenStreetMap
- 35.01972, -118.30506
- Filed location · EIA
- 35.02389, -118.29530
Registered plants sharing this mapped site
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| AW03 | 150 MW 150 MW summer | Onshore Wind Turbine WT | Feb 2011 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 150 MW
- Onshore Wind Turbine
- National rank
- #451
- of 1,374 operating peers
- CA rank
- #9
- of 110 operating peers
Monthly generation
Download CSVLatest 12 months
363.2 GWh
Reported net generation
Latest report
Dec 2024
EIA-923 monthly filing
2024 capacity factor
27.6%
Using current reported nameplate capacity
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.
Market registration
CAISO resource registryCommercial, 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
Wind-Impact Compensation Agreement
Date not disclosed
Alta III and Alta V entered into a Wake Impact Agreement with Alta VI and Alta VIII compensating them for estimated wind losses from construction of nearby wind facilities. No agreement date or compensation amount disclosed.
Alta Wind III, LLC · Alta Wind V, LLC · Alta Wind VI, LLC · Alta VIII Wind, LLC
Land and environmental record
County Land Use Permits
ZCC #40 (Map 197); ZCC #58 (Map 198); ZCC #24 (Map 214); CUP #6 (Map 197); CUP #41 (Map 198)
Kern County zoning-certificate and conditional-use-permit identifiers for Alta Oak Creek Mojave project including Alta Wind III, covering wind facility, ancillary infrastructure, and temporary construction concrete batch plant.
Environmental Disturbance
170.6 acres permanent facilities; 378.5 acres temporary disturbance; 549.1 acres total impacted habitat
Alta Oak Creek Mojave project-wide construction footprint: 170.6 acres permanent, 378.5 acres temporary, 549.1 acres total impacted habitat. Additional 14.1 acres of Bakersfield-cactus habitat. Figures apply to multi-unit project, not separately allocated to 150 MW Alta III.
Project Site Area
Approximately 9,300 acres
The Alta Oak Creek Mojave project site encompassing Alta Wind III is approximately 9,300 acres total. This is the multi-unit project area, not allocated solely to Alta III.
Streambed Alteration Permit
Streambed Alteration Agreement No. 1600-201
California Streambed Alteration Agreement No. 1600-201 issued for Alta Oak Creek Mojave Wind Project with Alta Wind III, LLC as one of the listed applicants.
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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AssetOwner / operatorFinancierOfftaker
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Alta Wind platform acquisitionTerra-Gen P...
Terra-Gen acquired the Alta Wind Energy Center development platform from Allco Finance, establishing the predecessor development ownership for the later Alta III project.