it depends on how much charging you want. all EV's can charge off of a slower 115vac 15amp circuit. At my last place I had a dedicated 40amp 230vac socket much like you'd have installed for a big electric heater in a garage or a pool heater or a dryer. Good recharge times which I actually have only needed once in my life.

At my current place I'm just using an extension cord to my outdoor outlet and I give it the 1500 watt option. You can even cut that in half if you don't want the "my this cord is warm.." effect.

In the end, the slower charge is the better charge, so my laziness has been winning. I don't see installing a 230vac socket any time soon given how well it's been working.

I've got an older phev that originally only got 14 miles of pure electric @ up to 79 mph, it's battery is down to about 9 miles expected. And that isn't a lot, but it is enough for 90% of my trips around town. Where you REALLY see this working well is if you have to go out every day to pick something or someone up locally. The amount of fuel burned on warmup cycles and local trips is not insubstantial.

The gas tank needle just LOVES to move with every small trip otherwise.

I sometimes go months without buying gas using that tiny miniscule range.