Tesla Megapacks power Ørsted’s large Old 300 Texas grid battery

Tesla Megapacks supply energy to Ørsted’s Old 300 battery storage project in Texas, with a capacity of 250 MW and 500 MWh. Located in Needville and connected to the ERCOT grid, the system can deliver 250 MW for two hours. Each Megapack, built at Tesla’s Megafactory in California, integrates battery modules, inverters, thermal management, and controls, providing about 1.9 MW and 3.85 MWh per unit. This system helps manage rising demand and grid stability in Texas, operating alongside the 430 MW Old 300 Solar farm, though both operate independently.

• Old 300 Storage has 250 MW power and 500 MWh capacity
• Each Megapack provides 1.9 MW and 3.85 MWh integrated

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