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10 MW BESS operating in Starr, TX — Electric Reliability Council of Texas, Inc.
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2023
Operating Since
Coordinates
26.4085, -98.9375
County
Starr, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | SMT Rio Grande I LLC | — | — |
| Owner(s) | SMT Rio Grande I LLC | — | — |
| Status | Operating | — | — |
SMT Rio Grande I LLC is a 10 MW battery energy storage system (BESS) located in Starr County, Texas. The plant, which began operating in 2023, is owned and operated by SMT Rio Grande I LLC. It consists of a single generator utilizing lithium-ion battery (LIB) technology. The facility has a total storage capacity of 10 MWh, providing a duration of 1 hour at its full power rating.
The plant operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the Texas Reliability Entity (TRE) NERC region. According to available rankings, SMT Rio Grande I LLC is the 253rd largest power plant in Texas out of 313, and the 795th largest in the United States out of 1205. The plant's primary fuel source is listed as "MWH," indicating that it draws power from the grid to charge its batteries.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
−21 MWh
Net Charging
-343 MWh
Annual Net Energy
-0.4%
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: $13.6M
Point of Interconnection
Nearest Substation
Garceno Substation · 138 kV
Substation Distance
0 km
Operator
American Electric Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
RIOG_ESR2_RN
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
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ask pi about SMT Rio Grande I LLCElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
12.47 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP