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100 MW BESS operating in Pecos, TX — Electric Reliability Council of Texas, Inc.
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
30.9247, -102.9533
County
Pecos, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | St Gall Energy Storage II LLC | — | — |
| Owner(s) | St Gall Energy Storage II LLC | — | — |
| Status | Operating | — | — |
St Gall Energy Storage II is a 100 MW battery energy storage system located in Pecos County, Texas. The plant, identified by the EIA plant code 68423, is owned and operated by St Gall Energy Storage II LLC. It consists of a single generator utilizing battery technology and is interconnected with the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority. The plant resides within the Texas Reliability Entity (TRE) NERC region.
St Gall Energy Storage II is ranked 224th out of 224 plants in Texas and 514th nationally. The plant's primary fuel is electricity (MWH), indicating it charges from the grid. News coverage of the plant includes 4 articles related to the industry and 2 related to the grid.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
−692 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
ERCOT
LMP Node
SG_BES_BESS1
Pricing Hub
HB_WEST
Alt. Hub / Zone
LZ_WEST
Location Type
Resource Node
Node Source
Curated node match
Last updated 2026-03-26
View all articlesNo ask pi reports yet for this entity.
ask pi about St Gall Energy Storage IIElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP