In Québec (where those batteries would be recharged), if we need more dams we build more dams. The only limiting factor is the demand and the amount of legal ni

In Québec (where those batteries would be recharged), if we need more dams we build more dams. The only limiting factor is the demand and the amount of legal nightmare we are ready to unleash by flooding the first nation land. In both case, money is usually the answer. A single river can support tens of dams as long as the flow is correctly regulated. Moving that power to the states (2000km) is wasting 70% of the power in losses. Better build more smelters in the north and ship the energy as battery instead.