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100 MW BESS operating in Williamson, TX — Electric Reliability Council of Texas, Inc.
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2021
Operating Since
Coordinates
30.7528, -97.8787
County
Williamson, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Engie North America | Engie North America | — |
| Owner(s) | Engie North America | ENGIE | — |
| Status | Operating | — | — |
North Fork TX is a 100 MW battery energy storage system located in Williamson County, Texas. The plant began operating in 2021 and has one generator. It is owned by ENGIE, a company based in France, and operated by Engie North America. The facility utilizes lithium-ion batteries (LIB) and has a total storage capacity of 110 MWh, providing a duration of 1.1 hours. The plant's primary fuel source is electricity (MWH).
North Fork TX operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the TRE NERC region. According to available rankings, the plant is the 209th largest in Texas out of 224 facilities, and the 492nd largest 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
−930 MWh
Net Charging
-23.1K MWh
Annual Net Energy
-2.6%
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.
2021
$1,796/kW
Est. Construction Cost
Total estimated cost: $179.6M
Point of Interconnection
Nearest Substation
Andice Substation · 138 kV
Substation Distance
0 km
Operator
Pedernales Electric Cooperative
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
NF_BRP_RN
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
Last updated 2026-03-26
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ask pi about North Fork TXElectric 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