GM Deploys Vehicle-to-Grid Firmware for 250,000 EVs, Announces Grid-Scale Sodium-Ion Batteries
General Motors has begun rolling out a firmware update to over 250,000 electric vehicles (EVs) in the U.S., enabling vehicle-to-grid (V2G) capabilities that allow cars to send electricity back to the power grid. Concurrently, GM unveiled plans to develop grid-scale sodium-ion batteries, aiming to provide a more cost-effective and domestically sourced alternative for energy storage. These initiatives are part of GM's strategy to address increasing electricity demands, partly driven by the expansion of AI infrastructure, and to enhance grid resilience.
General Motors is enhancing its electric vehicle (EV) ecosystem and energy storage solutions by implementing a new firmware update for a quarter-million EVs and developing grid-scale sodium-ion batteries.
More than 250,000 GM EVs currently on U.S. roads are capable of bidirectional charging, meaning they can both draw and supply electricity to the grid. A firmware update is being distributed to customers who possess GM Energy's vehicle-to-home hardware. This update will convert these existing systems into full vehicle-to-grid (V2G) assets without requiring new hardware, allowing home backup systems to function as grid resources when needed by utilities.
GM is piloting this V2G concept in Michigan with DTE Energy at 30 employee homes. The company has also outlined a 2030 vision with Pacific Gas & Electric, in which over 52,000 GM EVs are projected to help balance the grid out of an estimated 130,000 vehicles in the service area. GM is also actively seeking partnerships with utility companies nationwide to facilitate the offering of V2G services to customers, a move intended to help address rising energy costs.
In addition to V2G capabilities, GM announced its intention to advance battery technology with grid-scale sodium-ion batteries. The company aims to move beyond lithium-iron phosphate (LFP) technology. Sodium batteries are presented as a more economical option than LFP due to their reduced need for cooling systems. They are also projected to have a 20-year usable life and can be produced from materials sourced within the U.S., according to a company briefing in San Francisco.
Kurt Kelty, GM's vice president of battery and sustainability, stated that GM's version of sodium-ion chemistry is superior for energy storage applications. He noted promising results from prototypes, even at temperatures reaching 55 Celsius (131 Fahrenheit), highlighting that the ability to operate without active cooling and with less system complexity is a significant advantage for large energy storage systems, potentially reducing both upfront and operating costs.
GM has partnered with the energy-storage startup Peak Energy to develop its sodium-ion battery chemistry for grid-scale deployment. The company has committed $900 million to commercialize new battery chemistries, an investment that includes a new battery-development center. The first GM sodium-ion cells are anticipated to enter trial production at the company's Battery Cell Development Center in 2028.
GM also announced an "Energy Pass" within its applications, designed to simplify the charging experience. This pass will offer seamless access to major charging networks, including Tesla Supercharger, IONNA, Electrify America, and soon, ChargePoint and EVgo. The goal is to provide access to nearly 70% of all DC fast chargers in the United States, plus many Level 2 chargers, all through a single application.
(Source: Slashdot)
