Ørsted puts 500MWh Old 300 Texas BESS into operation
energy-storage.news Aug 6, 2026

Ørsted puts 500MWh Old 300 Texas BESS into operation

AI-summarised brief · reviewed before publication

Ørsted has commissioned its 250 MW/500 MWh Old 300 battery energy storage system in Needville, Texas, linking it to the ERCOT grid. The BESS sits beside the 430 MW Old 300 solar farm, which began operating in 2024, but functions independently to deliver rapid power during peak demand and grid disturbances. The storage units are Tesla Megapacks built at the company’s Lathrop, California megafactory, marking a major deployment of the manufacturer’s 13.5 GWh quarterly output. Ørsted expects the combined solar‑storage complex to generate roughly $110 million in local property tax revenue, supporting schools, infrastructure and emergency services. The project follows Ørsted’s shift from oil and gas to renewables and its recent acquisition of a 150 MW BESS in Michigan. The facility enhances Texas’s renewable capacity and grid resilience.

💡 Why It Matters

  • · By pairing large‑scale solar with fast‑response storage, Ørsted demonstrates a viable model for stabilizing Texas’s intermittently‑sourced grid, offering a template for other markets seeking reliable clean‑energy integration.