> Maybe, but if everyone starts using heat pumps we have a problem in getting enough copper in the ground everywhere on time. In New Zealand everyone uses heat

> Maybe, but if everyone starts using heat pumps we have a problem in getting enough copper in the ground everywhere on time. In New Zealand everyone uses heatpumps and there is no problem with everyone running them. Heatpumps don't use a huge amount of power even on cold days. If the grid can handle everyone cooking dinner at 6pm, it can handle heatpumps running throughout the day keeping the house warm. Fast electric car charging on the other hand draws a lot of current.