Samsung SDI Acquires Full Ownership of Indiana Battery Plant from GM

Samsung SDI is taking over General Motors’ entire 49.99% stake in their Indiana battery plant project, making Samsung the sole owner of the planned New Carlisle facility. That means the $3.5 billion project won’t run as a joint venture anymore—Samsung SDI will call all the shots on the site, which is designed to deliver 27 gigawatt-hours of batteries a year, with mass production starting in 2027.

So, why the change? Electric vehicle sales haven’t grown as quickly as expected. With GM out, Samsung will turn the Indiana site into its first battery plant in North America that it owns outright. The company’s shifting gears, aiming to produce batteries for a range of applications—from energy storage systems to electric vehicles—and will tweak its investment plan as needed to fit the market.

Even though the ownership tie ends here, Samsung and GM aren’t walking away from each other. They just signed a deal to work together on next-generation prismatic batteries. These are the kind with higher energy density and faster charging, which could end up powering the next wave of electric cars. The Indiana facility might handle that production, too.

Construction at the site is still rolling along. Samsung SDI says it’ll share more on its plans once everything lines up with regulatory steps. With this move, Samsung gets more freedom to answer the growing demand for energy storage in the U.S., while still keeping its tech partnership with GM alive.

This shift isn’t just about one plant, either—it fits into a bigger trend. Battery makers and car companies everywhere are rethinking how much they produce and where, especially with changing consumer appetite for EVs and new rules reshaping industry incentives.