The fact that CAISO has to ask customers not to charge their EVs during the current heatwave implies the grid is fragile. So much for the green energy transition to unreliable renewable solar and wind. A surge in EV charging at home could bring down parts of the state’s grid.

https://www.zerohedge.com/weather/avoid-charging-evs-california-grid-operator-warns-blackouts-urges-energy-conservation