I was concerned before I got my first electric car that the electricity bills would be massive.
That should have been an easy calculation to at least get a ballpark figure of what to expect.
But I use the car every day, charge it at home 70% of the time and I have hardly noticed an increase in my bills.
Any decent charger should be able to tell you, once you tell it how much you pay for electricity, how much you spend each month to charge. For us, it's about $20/month compared to $60 or $70 for ICE. And that car never needs to spend time at a gas station, which once we owned an electric, is more of a hassle than I thought.