Stellantis NextStar Battery JV Exit Signals a New Shift in North American Battery Strategy

NextStar Battery

Stellantis NextStar battery JV exit marks another important shift in North American battery strategy. Stellantis will sell its 49pc stake in NextStar Energy to LG Energy Solution. The joint venture built Canada’s first large-scale lithium-ion battery plant in Windsor, Ontario. As a result, Stellantis NextStar battery JV exit shows that automakers are rethinking how they participate in battery manufacturing.

This move matters because NextStar was a major industrial project. Stellantis and LG Energy Solution invested more than C$5bn in the venture. Yet the ownership structure is now changing even as the plant remains strategically important. Therefore, Stellantis NextStar battery JV exit is not a retreat from batteries. It is a shift in how the company wants to access them.

Stellantis will remain a customer of the facility after the transaction. That means the company still wants battery supply, but no longer wants to own nearly half of the manufacturing platform. Consequently, Stellantis NextStar battery JV exit reflects a broader trend toward supply access without full operating exposure.

EV Battery Joint Ventures Are Moving Into a New Phase

EV battery joint ventures are no longer being treated as fixed long-term ownership models. Automakers are increasingly separating battery access from battery plant ownership. That change is becoming visible across North America. As a result, EV battery joint ventures are entering a more flexible and less traditional phase.

The Stellantis decision fits a wider pattern. Other major automakers have also restructured or exited battery partnerships. General Motors sold its Michigan battery JV stake to LG Energy Solution in 2025. Ford also changed the structure of its BlueOval SK partnership later that year. Therefore, Stellantis NextStar battery JV exit looks less like an isolated deal and more like an industry reset.

This shift likely reflects changing economics and strategy. Battery manufacturing is capital-intensive, operationally complex, and increasingly competitive. Automakers may now prefer to secure output through commercial agreements while leaving plant ownership and operation to battery specialists. Meanwhile, battery makers can broaden their customer base more easily under that structure.

North American Battery Strategy Is Becoming More Specialized

North American battery strategy is now moving toward clearer specialization between automakers and cell producers. After the ownership change, NextStar will serve a broader customer base, including the energy storage system sector. That gives the plant more flexibility than a single-customer automotive model. As a result, the facility may become commercially stronger even as Stellantis reduces direct ownership.

This matters because battery plants are no longer only tied to electric vehicle demand. Energy storage systems are becoming a second major growth market. A battery facility that can sell into both EVs and stationary storage may have better long-term utilization and lower concentration risk. Therefore, North American battery strategy is becoming more diversified at the customer level.

The broader lesson is clear. Automakers still need batteries, but they may not want to carry the same level of manufacturing ownership risk as before. Battery producers, meanwhile, can gain more control and expand into wider end markets. Consequently, Stellantis NextStar battery JV exit may signal a more mature phase in the North American battery buildout.

The Metalnomist Commentary

This deal matters because it shows the battery race is no longer only about building plants. It is now about deciding who should own them, run them, and absorb the risk. Stellantis still wants battery supply, but LGES now looks better positioned to turn NextStar into a broader industrial platform.