- Two interconnected battery energy storage system projects are now online in South Texas.
- Each of the two sites is greater than 250 MWh.
Two interconnected battery energy storage system projects totalling more than 500 MWh in capacity are now online in South Texas and connected to the Electric Reliability Council of Texas grid.
Battery supplier Wärtsilä Energy and projects owner Eolian L.P., a Global Infrastructure Partners portfolio company, say the combined projects make up the “world’s largest (in MWh) fully-merchant and market-facing energy storage facility built to date.”
A Wärtsilä spokesperson told Power Engineering that the exact MWh capacity per project site was confidential. She said each of the two sites is greater than 250 MWh and longer than 2 hours, so the project is above 500 MWh in total.
The Madero and Ignacio lithium-ion battery projects have a combined power capacity of 200 MW and will be operated using Eolian software.