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9.9 MW BESS operating in Brazoria, TX — Electric Reliability Council of Texas, Inc.
9.9 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2021
Operating Since
Coordinates
29.0504, -95.6854
County
Brazoria, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Engie North America | Engie North America | — |
| Owner(s) | Engie North America | ENGIE | — |
| Status | Operating | — | — |
The Sweeny battery storage facility is located in Brazoria County, Texas. The plant, owned by ENGIE and operated by Engie North America, came online in 2021. It has a total capacity of 9.9 MW from a single battery energy storage system (BESS) generator. The primary fuel source is electricity (MWH).
The facility utilizes lithium-ion batteries (LIB) and has a storage capacity of 9.9 MWh, providing a duration of 1 hour at full output. Sweeny operates within the Electric Reliability Council of Texas (ERCOT) balancing authority. Nationally, the plant ranks 802 out of 1205 facilities, and within Texas, it ranks 265 out of 313.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
−30 MWh
Net Charging
-414 MWh
Annual Net Energy
-0.5%
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: $17.8M
Point of Interconnection
Nearest Substation
Sweeny Substation · 138 kV
Substation Distance
0 km
Operator
Texas-New Mexico Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
BRP_SWNY_RN
Pricing Hub
HB_HOUSTON
Alt. Hub / Zone
LZ_HOUSTON
Location Type
Resource Node
Node Source
Curated node match
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ask pi about SweenyElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
12.5 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP