Developers have announced plans for a major battery storage expansion in Texas and California, with projects totaling 4.8 gigawatts of capacity and about $2.7 billion in private investment. If completed on schedule, the facilities are expected to begin coming online by 2028.

The new buildout reflects continued demand for grid-scale storage as power systems add more renewable generation and seek faster ways to balance supply and demand. Battery projects can help shift electricity to peak hours, support reliability, and reduce strain on the grid during periods of high usage.

Texas and California have become two of the country’s most active markets for large-scale storage, driven by rapid growth in solar and wind power as well as recurring grid stress. The latest announcements add to a broader wave of energy infrastructure investment across both states.

While developers have outlined the size and funding of the projects, the timeline still depends on permitting, construction, and equipment delivery. If the facilities are completed as planned, they would represent one of the largest recent additions to U.S. battery storage capacity.