Looks like the ChargePoint app. I have it because my home EVSE is a ChargePoint Home Flex.
One problem with that app is that it has a canned estimate for mi/kWh based on the car you specify that it uses for the mileage calculation. I have never found a way to put my actual measured mi/kWh into the app to give me more accurate mileage numbers.
So I have a spreadsheet that I update each month with my actual miles driven, the kWh put into the car, and the money spent on charging for the month. One thing pulling the cost number down is the free EA charging on road trips.
@cmwade77
Personally, I'd trust Chargepoint for accurate information on saving me money charging an EV about as little as I'd trust an Exxon app telling me how much I'd save driving an ICE car. They're vested in giving you inflated numbers to make their product look totally awesome dude. And don't get me started on the LSD-induced MPGe metric and how that calculation can never be realized in the universe we call reality. LOL
I, too, keep detailed spreadsheets on my EV miles, EV charging elsewhere besides home, power bills, what my natural gas bills would be if I didn't convert them to electric ones, and my cost at the pump would be like if we were still driving an ICE those miles. I also export data from my solar inverters into a SQL Server database and run numbers on it too when I get my power bill to see how much kWh I consumed that month, how little of that was pulled from the grid, how much the true cost per kWh the grid charged me for (after subtracting flat monthly rate, fees and riders to derive the true cost per kWh with many riders and tax). For the cost of gas I look at the cheapest near me on the day I get my power bill and assume that cost was for the entire month. I promise you, nobody gives us the real numbers. If you want real numbers you'll have to calculate them yourself.
Then you get into things like my car insurance is $70/month more than it was when our main car was an old used ICE crossover --- but that extra $70 also means full coverage instead of liability only (why have full coverage when you're driving an old used car anyway?). Plus paying interest on a car loan: it's a low fixed interest but it's a new concept to my wife and me since the I5 is the first new car in our marriage. Then there's the installation costs for two 240V circuits (it's a trick to charge the car cheaper with free solar power if it's available, but if necessary charge it with constant power though that might involve pulling power from the grid). That's a one-time cost, but still relevant. Then there's the tax credits that will be nice when I get them soon --- except that they artificially inflated my costs to begin with.
Yet with all of that I'm still very happy I chose the I5 and went solar both as a fun riding experience and as a relief from not worrying nearly as much when the political class keeps bigly raising energy costs like they keep promising to do.
. With a blend of home and fast charging though I'm averaging ~$20 a month and have traveled roughly 7,000 miles since February.
