I got a scary electric bill and started digging around the numbers. It seems I've used 4090kWh over 2 months for about 4000 miles of driving. 99% of which was charged at home. Now I need to dig into my old bills to figure how much out of the 4090kWh I should have expected to use without Model S charging. At least in terms of dollars spent, it seems about a 2.5x increase. So $650 instead of $260 I would've expected to pay over two summer months. If that's actually true, this car is costing me a little more to run than what a gas car would do (~10 miles to a dollar). I am paying about 16c per kWh and our usage patterns haven't changed in years. Will update when I do some more digging but I am wondering if this could be a faulty meter issue.