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73.2 MW BESS operating in Brewster, TX — Electric Reliability Council of Texas, Inc.
73.2 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
30.4957, -103.4510
County
Brewster, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | House Mountain | — | — |
| Owner(s) | House Mountain | — | — |
| Status | Operating | — | — |
House Mountain is a 73.2 MW battery energy storage system (BESS) located in Brewster County, Texas. The plant, which began operating in 2024, is owned and operated by House Mountain. It consists of a single generator utilizing batteries as its primary fuel source (MWH). The BESS has a total storage capacity of 120 MWh, providing a duration of approximately 1.64 hours. The battery chemistry is lithium-ion (LIB).
House Mountain operates within the Electric Reliability Council of Texas (ERCOT) balancing authority, and the NERC region is TRE. The plant is ranked 225th out of 313 power plants in Texas, and 557th nationally out of 1205 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
−443 MWh
Net Charging
-5.7K 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.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $99.6M
Market Position
ISO/RTO Market
ERCOT
LMP Node
HOUSEMTN_RN
Pricing Hub
HB_WEST
Alt. Hub / Zone
LZ_WEST
Location Type
Resource Node
Node Source
Curated node match
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about House MountainElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
69.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP