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40 MW Batteries (20 MW) + Solar Photovoltaic (20 MW) operating in Cochise, AZ
40 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2017
Operating Since
Coordinates
32.0681, -109.8904
County
Cochise, AZ
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Electric Pwr Coop Inc | Arizona Electric Power Cooperative | — |
| Owner(s) | Sierra Southwest Cooperative | Sierra Southwest Cooperative Services INC (SIERRA) | — |
| Status | Operating | operating | — |
GEM identifies the owner as Sierra Southwest Cooperative Services INC (SIERRA)
This entity is not yet in the GEM ownership database — chain unavailable.
Apache Solar I is a 40 MW hybrid power plant located in Cochise County, Arizona. The plant, which began operating in 2017, is owned and operated by Arizona Electric Power Cooperative Inc. It utilizes both solar photovoltaic technology with single-axis tracking and battery energy storage. The facility has three generators and is fueled by electricity (MWH). The battery energy storage system (BESS) has a capacity of 40 MWh, providing a duration of 4 hours and employing lithium-ion battery (LIB) chemistry.
The plant's latest annual generation was 55,502 MWh, resulting in a capacity factor of 15.8%. Apache Solar I operates within the Western Electricity Coordinating Council (WECC) NERC region and is under the balancing authority of the Western Area Power Administration - Desert Southwest Region. Financial data is available for the plant from LBNL, though specific metrics are not provided. Apache Solar I is ranked 57th out of 68 power plants in Arizona and 626th out of 1205 nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Western Area Power Administration - Desert Southwest Region (WALC)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Cooperative
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
3.2K MWh
Net Discharge
55.5K MWh
Annual Net Energy
15.8%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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Historic financial signal for this asset — PPA, LCOE, market value where reported. The base for forward bankability and insurance analytics on the InfraSure platform.
Data from 2017–2024
$12.3/MWh
Energy Value
$23.7/MWh
Capacity Value
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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