The next car I buy will almost certainly be an EV but I intend to run my current whip, a 2016 Skoda Oktavia, into the ground before I buy one. Ideally I'll get another 5-10 years out of it and by then we may not even need two cars.
My obsession with minimising our electricity consumption has however clouded my judgement when it comes to using Mrs Don's EV. In the summer we can charge it for free given halfway decent weather but it's a different matter in a Welsh winter. In order to limit our electricity purchases on dark and cloudy days I've been using the Skoda instead.
The stupid thing is that we now have a tariff where we get (for the UK) cheap electricity for 4 hours overnight (9p/kWh vs 28p), the kicker being that we pay a premium (30p/kWh) for the other 20 hours. Even at the expensive rate it costs less than 8p/mile to fuel the EV (as opposed to around 15p/mile). It's under 3p/mile at the cheap rate and - due to our ridiculous electricity supply arrangement at Don Towers - we can get around 60 miles of range into the car during cheap hours.
According to my utility, average electric rates in the US are just a bit over $0.16/kwh and my local rates are $0.1025 per kWh. But we are currently blessed with a lot of renewables in Texas, despite our government trying to stop further development.
I haven’t looked into buy back rates yet at this location but nearby they said buy backs would be at wholesale market rates, so whatever they were paying for electricity on the open market, which I think is close to $0.06 per kWh.