Where is Old 300 Storage Center?

In Fort Bend County, Texas (TX). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is Old 300 Storage Center?

250 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

Who owns Old 300 Storage Center?

EIA-860M names Old 300 Storage Center, LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as Old 300 Storage Center LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Old 300 Storage Center, LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Old 300 Storage Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Old 300 Storage Center still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Old 300 Storage Center

Old 300 Storage Center is a 250 MW battery storage project in Fort Bend County, Texas, operated by Old 300 Storage Center, LLC. EIA-860M lists 1 generating unit here, inside ERCOT. Its unit entered service in 2026.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 250 MW; 250 MW net summer
Generating units: 1
In service: 2026
EIA plant ID: 68365

Where it is

Loading map…

County: Fort Bend County, Texas
Coordinates: 29.3266, -95.8118
Balancing authority: ERCO
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Old 300 Storage Center, LLC
Primary energy source: Battery
Technologies: Batteries
Status: Operating

Every plant Old 300 Storage Center, LLC reports to EIA →

Old 300 Storage Center: FAQ

Where is Old 300 Storage Center?: In Fort Bend County, Texas (TX). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Old 300 Storage Center?: 250 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Old 300 Storage Center?: EIA-860M names Old 300 Storage Center, LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Old 300 Storage Center LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Old 300 Storage Center, LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Old 300 Storage Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Old 300 Storage Center still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.