GM Pivots Toward Grid-Scale Energy Storage

GM’s strategy centers on the development of sodium-ion cells, a chemistry that offers lower costs and reduced overheating risks compared to standard lithium-ion counterparts. While sodium-ion batteries are heavier, their performance characteristics align with the demands of grid-scale energy storage. The company expects trial production to begin at its dedicated Battery Cell Development Center by 2028, a timeline GM believes it can accelerate by a year due to new internal infrastructure.

To bridge the gap until sodium-ion production matures, the automaker is supplying lithium iron phosphate cells to LG Energy Solution for existing storage projects. Simultaneously, GM is deepening its relationship with Redwood Materials, the recycling firm led by former Tesla executive J.B. Straubel. This collaboration includes a 7.2 megawatt-hour storage installation at a Michigan facility, designed to mitigate power demand spikes and provide backup capacity. Kurt Kelty, GM’s vice president of battery and sustainability, noted that the company intends to deploy similar storage systems across its manufacturing footprint to improve operational reliability and long-term cost efficiency.