10 MW BESS operating in Bexar, TX — Electric Reliability Council of Texas, Inc.
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2019
Operating Since
Coordinates
29.4355, -98.6185
County
Bexar, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of San Antonio - (TX) | — | — |
| Owner(s) | City of San Antonio - (TX) | — | — |
| Status | Operating | — | — |
Commerce ESS is a 10 MW battery energy storage system located in Bexar County, Texas. The plant began operating in 2019 and has one generator utilizing batteries as its technology. The primary fuel source is listed as MWH, indicating it draws power from the grid to charge. The facility is owned and operated by City of San Antonio - (TX). It has a total storage capacity of 10 MWh, with a duration of 1 hour, and utilizes lithium-ion battery chemistry (LIB).
The Commerce ESS operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the TRE NERC region. It is ranked as the 256th largest power plant in Texas out of 313, and nationally it is ranked 783 out of 1205. Public reporting indicates the plant has been mentioned in 10 news articles, with coverage focusing on industry trends, deals, grid operations, and regulatory matters.
Generated from EIA, GEM, and public data sources
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
34 kV
Regulatory Status
RE
Entity Type
Municipal
Sector
Electric Utility
−78 MWh
Net Charging
-818 MWh
Annual Net Energy
-0.9%
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.
No financial data available for this plant.
Point of Interconnection
Nearest Substation
Southwest Research Institute Substation · 138 kV
Substation Distance
< 10 km
Operator
CPS Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
SWRI
Pricing Hub
HB_SOUTH
Node Source
EIA-860 direct report
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Last updated 2026-03-14
View all 10 articles