Bexar ESS — Plant Summary
- EIA Plant ID
- 66400
- Capacity
- 100 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Testing
- Location
- Bexar, TX
- Operating Since
- —
- Generators
- 1
- Operator
- Bexar ESS, LLC
- Parent Company
- —
- Balancing Authority
- Electric Reliability Council of Texas, Inc.
- ISO/RTO
- ERCOT
- NERC Region
- TRE
Bexar ESS
TestingBESS
Ranked #146 of 256 BESS plants in TX#324 of 837 nationally
100 MW BESS testing in Bexar, TX — Electric Reliability Council of Texas, Inc.
EIA
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
—
Operating Since
Location
Coordinates
29.2710, -98.4560
County
Bexar, TX
Nearby Plants
- OCI Alamo Solar I HybridSolar40.7 MW · 1.0 km
- SunE CPS2 LLCSolar10 MW · 4.7 km
- SunE CPS1 LLCSolar10 MW · 4.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Bexar ESS, LLC | — | — |
| Owner(s) | Bexar ESS, LLC | — | — |
| Status | Testing | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Bexar ESS is a 100 MW battery energy storage system located in Bexar County, Texas. The plant's primary fuel is electricity (MWH), which it uses to charge its batteries. It consists of a single generator and is operated by Bexar ESS, LLC. The facility is within the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority and the TRE NERC region.
Bexar ESS ranks as the 222nd largest power plant in Texas out of 224 facilities, and 503rd nationally out of 514. The plant has been the subject of 10 news articles, with coverage focusing on grid-related topics (5 articles), industry news (3 articles), and deals (2 articles).
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
Bexar ESS
OperationalBattery102.6 MWERCOT
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
OCI Alamo 1 · 138 kV
Substation Distance
1.097 km
Operator
CPS Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
RN_OCI_ALAMO
Pricing Hub
HB_SOUTH
Secondary Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
News & Articles (10)Beta
Industry·technology
S.Korean solar, battery makers to gain edge as China scales back subsidies
China's decision to scrap export subsidies for key energy products is expected to offer tailwinds for South Korean solar energy and battery...
South Korean (other)China (other)
The Korea Economic Daily Global Edition·2 months ago
Industry·partnership
OCI Holdings signs energy storage agreement with CPS Energy, Vertech
OCI Holdings announced Tuesday that its US subsidiary, OCI Energy, has signed a three-party memorandum of understanding with CPS Energy, a Texas-based energy...
OCI Holdings (other)OCI Energy (other)
The Korea Times·10 months ago
Grid·capacity addition
Texas to receive major power grid boost as massive new battery system takes shape: 'Crucial for meeting peak energy needs'
A new massive battery storage system is coming to San Antonio, Texas, and it will play a crucial role in supporting the grid.
San Antonio (other)
The Cool Down·1 years ago
Deals·other
Texas utility enters tolling agreement with OCI Energy for 120MW/480MWh BESS
San Antonio, Texas, utility CPS Energy and developer OCI Energy have entered into a long-term storage capacity agreement (SCA) for a 120MW/480MWh battery...
CPS Energy (operator)OCI Energy (developer)
Energy-Storage.News·1 years ago
Last updated 2026-03-14
View all 10 articles