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70 MW BESS operating in San Bernardino, CA — California Independent System Operator
70 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
34.1377, -117.4160
County
San Bernardino, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Strata Manager, LLC | — | — |
| Owner(s) | Inland Empire Energy Storage | — | — |
| Status | Operating | — | — |
Inland Empire Energy Storage is a 70 MW battery energy storage system (BESS) located in San Bernardino County, California. The facility began operating in 2024 and is owned and operated by Strata Manager, LLC. The plant utilizes lithium-ion (LIB) battery chemistry and has a total storage capacity of 200 MWh, providing a duration of approximately 2.86 hours at full output. The plant's primary fuel type is listed as purchased electricity (MWH), indicating it charges from the grid.
The facility operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Inland Empire Energy Storage is ranked as the 140th largest power plant in California out of 300, and 565th nationally out of 1205. The plant consists of a single generator utilizing battery technology.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
66.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
−971 MWh
Net Charging
-10.4K MWh
Annual Net Energy
-1.7%
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.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $95.3M
Market Position
ISO/RTO Market
CAISO
LMP Node
ETIWANDA_6_N015
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-26
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