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100 MW BESS operating in San Diego, CA — California Independent System Operator
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
32.9400, -117.0319
County
San Diego, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | MN8 Energy LLC | — | — |
| Owner(s) | Pome BESS LLC | — | — |
| Status | Operating | — | — |
Pome BESS is a 100 MW battery energy storage system located in San Diego County, California. The plant is owned and operated by MN8 Energy LLC. It consists of a single generator utilizing batteries as its primary fuel source, designated by the code MWH. The facility operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Pome BESS is ranked as the 105th largest power plant in California out of 112, and nationally it is ranked 500th out of 514. Recent news coverage indicates activity related to deals and regulatory matters concerning the plant.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−1.3K MWh
Net Charging
—
Annual Net Energy
—
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: $136.1M
Market Position
ISO/RTO Market
CAISO
LMP Node
POMERADO_6_N004
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about Pome BESSCalifornia Independent System Operator (CISO)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP