Denmark-based energy company Ørsted has brought its Old 300 Storage project in Needville, Texas, into commercial operations, adding 250 MW and 500 MWh of battery energy storage capacity to the Electric Reliability Council of Texas grid.

Project Details and Location

The Old 300 Storage facility is located in Needville, Texas, and is now fully integrated into the ERCOT grid. The battery energy storage systems powering the project were manufactured by Tesla and qualify as made-in-America hardware. The project sits alongside a 430 MW solar installation at the same site that reached commercial operations in 2024, making Old 300 a co-located solar-plus-storage development. The storage project represents a significant addition to grid resources in a market that has faced scrutiny over reliability during periods of high demand.

Role in ERCOT and Grid Reliability

Melissa Peterson, President of Ørsted Americas Onshore, noted the role that battery storage has played in supporting ERCOT during periods when supply and demand margins are tight, citing the Old 300 project's commercial operations milestone as a contribution to that ongoing need. ERCOT serves the majority of Texas and operates as an isolated grid, making in-state generation and storage resources particularly important for managing reliability.

Broader Ørsted U.S. Portfolio

The Old 300 Storage project is part of a larger onshore energy portfolio Ørsted has assembled in the United States, which sources indicate spans approximately 6 GW in total capacity. The company, headquartered in Denmark, has positioned its Americas onshore division as a key growth area, with projects spanning solar, wind, and battery storage technologies across multiple U.S. markets.