Ørsted commissions 500 MWh battery storage project in Texas with Tesla systems

The Danish energy company's Old 300 facility in ERCOT, co-located with 430 MW of solar and featuring Tesla Megapacks, is now operational and storing energy at grid scale.

First covered Aug 5, 2026 · 1:45 PM PT · 2 articles

Ørsted commissions 500 MWh battery storage project in Texas with Tesla systems — Image via electrek.co

Coverage

4h PV Magazine Ørsted turns on 500 MWh battery project with co-located solar in Texas — The Old 300 Storage project has reached commercial operations and is now fully integrated with the ERCOT grid, using made-in-America Tesla battery energy…

19h Electrek Tesla Megapacks power Ørsted’s big new Texas grid battery — Tesla Megapacks are now helping support the Texas grid at Ørsted’s new 250 MW/500 MWh Old 300 battery storage project.

More coverage from around the web

solarpowerworldonline.com Ørsted adds 500 MWh of Tesla BESS to ERCOT grid

us.orsted.com Ørsted Announces New Battery Energy Storage System in Fort Bend County

power-technology.com Ørsted begins commercial operations at Old 300 Storage in US

prnewswire.com Ørsted Announces Commercial Operations of Energy Storage System in Fort Bend County, TX

europesays.com Ørsted puts 500MWh Old 300 Texas BESS into operation - EUROPE SAYS

Appeared in: 2026-08-06 (#6)

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