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Mainland

Battery storage power plant · Galveston County, Texas

Nameplate capacity
9.9 MW
Rank in Texas
#786
of 1,071 plants
In service since
2024
June 2024

Details

Primary fuel
Battery storage
Technology
Batteries
Operator
HEN Infrastructure, L.L.C.
County
Galveston County
Generating units
1
Share of state capacity
0.00%
Rank among battery storage plants in Texas
#163 of 211
EIA plant code
67494

Generating units

Individual generating units at Mainland
UnitTechnologyNameplateSummerOnlineStatus
MLNDBBatteries9.9 MW9.9 MW2024Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

Similarly sized plants in Texas

Lufkin South BESSBattery storage9.9 MW
Magnolia TXBattery storage9.9 MW
Meadow Park Energy CenterBattery storage9.9 MW
Mineral Wells East BESSBattery storage9.9 MW

About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 9.9 MW solar plant and a 9.9 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Texas power plants · What Texas actually generates