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123.3 MW BESS operating in Hill, TX — Electric Reliability Council of Texas, Inc.
123.3 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
31.8645, -97.0145
County
Hill, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Sun Valley Storage LLC | — | — |
| Owner(s) | Sun Valley Storage LLC | — | — |
| Status | Operating | — | — |
Sun Valley Storage is a 123.3 MW battery energy storage system located in Hill County, Texas. The plant began operating in 2024 and is owned and operated by Sun Valley Storage LLC. It consists of a single generator utilizing lithium-ion battery (LIB) technology. The plant's storage capacity is 123 MWh, providing a duration of approximately 1 hour at full power.
The primary fuel source for Sun Valley Storage is electricity (MWH), which it uses to charge its batteries. The plant operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the Texas Reliability Entity (TRE) NERC region. In terms of size, Sun Valley Storage ranks as the 187th largest power plant in Texas out of 224, and 437th nationally out of 514.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
−837 MWh
Net Charging
-6.4K 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: $167.8M
Market Position
ISO/RTO Market
ERCOT
LMP Node
SUNVASLR_ALL
Pricing Hub
HB_NORTH
Alt. Hub / Zone
LZ_NORTH
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 Sun Valley StorageElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
345.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP