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116.6 MW BESS operating in Riverside, CA — California Independent System Operator
116.6 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
33.9244, -116.9876
County
Riverside, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Terra-Gen Operating Co-BESS 2 | — | — |
| Owner(s) | Terra-Gen Operating Co-BESS 2 | — | — |
| Status | Operating | — | — |
Beaumont BESS is a battery energy storage system located in Riverside County, California. The plant, owned and operated by Terra-Gen Operating Co-BESS 2, has a total capacity of 116.6 MW. It began operating in 2024 and utilizes batteries as its primary fuel source, specifically lithium-ion (LIB) chemistry. The facility consists of a single generator.
The Beaumont BESS has a total storage capacity of 400 MWh, providing a duration of approximately 3.43 hours at full output. It operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In terms of size, Beaumont BESS ranks 98th out of 112 battery storage plants in California and 444th nationally out of 514 such facilities.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−852 MWh
Net Charging
-14.9K MWh
Annual Net Energy
-1.5%
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: $158.7M
Point of Interconnection
Nearest Substation
Edison Dylan Substation · 115 kV
Substation Distance
< 10 km
Operator
Southern California Edison
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
Last updated 2026-03-26
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ask pi about Beaumont BESSCalifornia Independent System Operator (CISO)
Grid Voltage
115.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP