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9.9 MW BESS operating in Brazoria, TX
9.9 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2020
Operating Since
Coordinates
29.4338, -95.2504
County
Brazoria, TX
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Engie North America | Engie North America | — |
| Owner(s) | Engie North America | ENGIE | — |
| Status | Operating | — | — |
The Alvin battery storage plant is located in Brazoria County, Texas. The plant has a total capacity of 9.9 MW and is owned by ENGIE, a company based in France. Engie North America is the listed operator. The plant began operating in 2020 and consists of a single generator utilizing battery storage technology. The battery energy storage system (BESS) has a storage capacity of 9.9 MWh, providing a duration of 1 hour. The battery chemistry is lithium-ion (LIB).
Alvin operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the TRE NERC region. In terms of size, the plant is ranked 301 out of 313 facilities in Texas, and 839 out of 1205 nationally. The primary fuel type is listed as MWH, indicating that the plant draws power from the grid to charge its batteries.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
Electric 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
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
−40 MWh
Net Charging
-521 MWh
Annual Net Energy
-0.6%
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.
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2020
$758/kW
Est. Construction Cost
Total estimated cost: $7.5M
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Point of Interconnection
Nearest Substation
Alvin Substation · 138 kV
Substation Distance
0 km
Operator
Texas-New Mexico Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
ALVIN_RN
Pricing Hub
HB_HOUSTON
Alt. Hub / Zone
LZ_HOUSTON
Location Type
Resource Node
Node Source
Curated node match
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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