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90 MW Wind operating in Kern, CA — California Independent System Operator
90 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2014
Operating Since
Coordinates
35.0859, -118.3756
County
Kern, CA
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Alta Wind XI, LLC | Terra-Gen | — |
| Owner(s) | NRG Renew | NRG Energy | — |
| Status | Operating | operating | — |
Alta Wind XI is a 90 MW wind power plant located in Kern County, California. The facility, which began operating in 2014, is owned by NRG Energy and operated by Alta Wind XI, LLC. It utilizes a single onshore wind turbine generator. The plant uses GE2.85-103 wind turbines manufactured by GE Wind, with a rotor diameter of 103 meters and a hub height of 85 meters.
In its most recent year of operation, Alta Wind XI generated 269,452 MWh of electricity, achieving a capacity factor of 34.1%. The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Alta Wind XI ranks as the 31st largest wind farm in California out of 116, and 781st nationally out of 1424. Financial data indicates a power purchase agreement (PPA) price of $11 per MWh.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
19.9K MWh
Latest Month
269.5K MWh
Annual Generation
34.1%
Capacity Factor
Alta Wind XI, LLC · Data from 2019–2025
$11.0/MWh
PPA Price
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Shared substation inference
Last updated 2026-03-26
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ask pi about Alta Wind XICalifornia Independent System Operator (CISO)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP