Stellantis NV and LG Energy Solution Ltd. are reviewing an offer from the Canadian and Ontario governments to salvage an electric-vehicle battery plant in Windsor, across the border from Detroit.

The carmaker and its South Korean partner announced the $4.1-billion plant in 2022 but halted construction last month amid a dispute over subsidies. The companies are seeking public money on par with the incentives in the US Inflation Reduction Act.

Ontario said last week it would pay one-third of the subsidy for the companies. The overall amount is likely to be more than the C$13 billion ($9.7 billion) Canada offered …