You’re likely to be doing this mostly overnight at home while you’re asleep. This is the period of least energy usage for other activities, particularly between midnight and 6am. In fact, energy is so out of demand at this time that one energy supplier in the UK has actually paid its customers to use electricity for short periods overnight. Most EVs already have the ability to set times when they charge, so you can plug them in before going to bed, but they only start consuming energy at the time you configured.

Source: EVs Are Not A Problem For The Electric Grid, They Are The Solution