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9.9 MW BESS operating in Galveston, TX — Electric Reliability Council of Texas, Inc.
9.9 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
29.3959, -95.0408
County
Galveston, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | HEN Infrastructure, L.L.C. | — | — |
| Owner(s) | HEN Infrastructure, L.L.C., John Hancock Funding Company, Manulife Infrastructure II Holdings A, L.P. | — | — |
| Status | Operating | — | — |
The Mainland energy storage plant is located in Galveston County, Texas. The facility, owned and operated by HEN Infrastructure, L.L.C., came online in 2024. It has a total capacity of 9.9 MW provided by a single battery energy storage system (BESS) generator. The primary fuel type is listed as MWH, indicating electricity used for charging the batteries.
The Mainland plant utilizes lithium-ion batteries (LIB) to provide 9.9 MWh of energy storage with a duration of 1 hour. It operates within the Electric Reliability Council of Texas (ERCOT) balancing authority, and the NERC region designated as TRE. In terms of size, the plant ranks 305th out of 313 power plants in Texas, and 844th out of 1205 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
−24 MWh
Net Charging
-183 MWh
Annual Net Energy
-0.2%
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: $13.5M
Market Position
ISO/RTO Market
ERCOT
LMP Node
MAINLAND_BESS
Pricing Hub
HB_HOUSTON
Node Source
EIA-860 direct report
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ask pi about MainlandElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
12.47 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP