Here is some math that shows that the Alberta grid should have the capacity to charge the vast majority of cars currently on the road.
Data gathered May 2nd 3:30pm 2019
Of course, the grid won’t have to charge a million EVs tomorrow, but this gives comfort that when a million+ EVs are on our roads, the grid will have had plenty of time to prepare. We recognize that there is work to be done – community transformers may need to be upgraded as they age, etc. No different than has been occurring over the decades as electricity usage has grown.