Very EV friendly area. Of the 4 Arlington apartment buildings I’ve lived in, 2 have had EV charging stations that almost never get used.

That said, if you plan on commuting by car tolls will be a bigger problem than charging. 66 uses demand-driven toll pricing during rush hour and 267 is a toll road at all times. It can really add up.

The silver line is a practical option if your office is close to the station. Super early in the AM or late at night can be less so. Long waits and sketchy people (at least in DC proper. Less so in Arlington and probably very rare in FFX/Loudoun since the stations are above ground)