Windsor, Ontario- NextStar Energy, in partnership with Stellantis and LG Energy Solution, has officially completed the $5 billion EV battery plant in Windsor. With the conclusion of construction, the facility is now positioned to accelerate North American battery supply.
The plant was built on schedule and without major incidents, according to company leadership. Moreover, the joint venture emphasized safety and thorough execution in each phase. With this milestone, the project now transitions into the commissioning and operational stages.
Project Factsheet: NextStar / ANC Battery Plant
Developer / Partners NextStar Energy (Stellantis + LG Energy Solution)
Project Type Large-scale lithium-ion battery manufacturing
Capacity approximately 49.5 GWh annually
Size approx. 4.23 million sq ft of facility footprint
Location Windsor, Ontario, Canada
Construction Duration Began August 2022, Completed September 2025
Workforce 3,200 trades & installation staff
Economic Impact Thousands of jobs; major boost to local EV supply chain
Strategic Significance & Market Context
With this plant complete, Canada secures its first large-scale domestic EV battery manufacturing facility. Indeed, NextStar’s facility will supply around 40 % of Stellantis’s electric vehicle needs in North America.
Furthermore, the project supports the auto industry’s shift toward electrification. As more automakers plan EV lineups, stable local battery supply reduces reliance on distant overseas sources. Hence, NextStar’s plant strengthens resilience in North American supply chains, much like the Louisiana EV battery plant that recently broke ground as a first-of-its-kind facility in the United States.
This momentum parallels Texas’ clean energy expansion, particularly through Eolian’s Padua 2 and 3 battery storage projects, which secured $463 million in financing to bolster grid reliability. Together, these initiatives represent a coordinated push to power the future of transportation and energy independence across North America.
Teams, Timing & Execution
Construction of this facility began in August 2022 with site clearing and foundation work. Over succeeding years, the project advanced steadily, marked by topping-out ceremonies and structural milestones.
Project leadership reports that work proceeded with adherence to safety protocols and schedule benchmarks. As a result, the building envelope, mechanical systems, and installation phases were completed on time. Now, the transition is toward testing and startup.
The plant’s workforce included up to 3,200 trades and installers. Of these, a large share were local and Canadian, reinforcing regional industrial capacity.
Challenges & Mitigations
Although the project achieved completion, it faced typical risks: supply chain constraints, labor availability, and cost inflation. To mitigate these, the joint venture applied rigorous procurement protocols and phased staging. In addition, close coordination among Stellantis, LG, and contractors helped streamline operations.
Moreover, contingency planning allowed flexibility in schedule buffers. The project’s success underscores the value of proactive risk management in big-ticket EV infrastructure builds.
Next Steps & Outlook
With construction now done, the plant enters the commissioning and start-up phase. Over coming months, equipment will be tested, systems calibrated, and production ramped. Once operational, the plant will begin delivering modules and cells to EV assembly lines.
The broader implication is clear: this facility positions Windsor, and Canada, as a strategic hub for EV battery manufacturing. As demand for electric vehicles grows, the NextStar plant becomes a cornerstone for regional energy transition and auto growth.
