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GM Energy Launches V2G Support and Sodium-Ion Grid Batteries

Ars Technica •
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GM Energy unveiled vehicle-to-grid (V2G) capabilities for its electric vehicles, enabling owners to feed power back to electrical infrastructure. The company announced partnerships with PG&E and DTE Energy to integrate bidirectional charging systems. Over 250,000 GM EVs already support this technology, with plans to expand grid support significantly by 2030.

The automaker also introduced sodium-ion batteries built specifically for grid energy storage through its collaboration with Peak Energy. These sodium pyrophosphate (NFPP) batteries operate between -40°C and 60°C while targeting 10,000 to 20,000 charge cycles. GM claims the new chemistry will be 20 percent less expensive to maintain than existing ESS batteries, with production expected in 2028.

Additionally, GM partnered with Redwood Materials to deploy 100 repurposed battery packs at a Michigan facility, generating 1.5–7.2 MWh of energy and saving approximately $3 million in utility costs over the batteries' lifetime. This initiative supports GM's broader strategy of developing application-specific battery technologies.

PG&E CEO Patty Poppe emphasized that bidirectional EVs could help alleviate grid pressure from growing AI data center demand. The utility projects that 52,000 V2G-capable vehicles in its service area could power every San Francisco home for half a day, demonstrating how electric vehicles can contribute to grid stability rather than strain it.