Most modern electrical panels can support an EV charger without major upgrades. But about 20% of homes need additional electrical work beyond basic charger installation.
I have a home w/ a 100amp panel. When I was installing an EV charger I thought I'd need to upgrade to 200 amps but it turns out, no, I don't! I installed a whole-house battery instead which reduced my grid usage and split the circuit so the car charges on-grid (60amp) while the house is on-battery.
