Here in BC, I'm paying 13.6 cents all in (2nd tier) per kWh at home right now, so pretty cheap. It's a lot harder to justify a home solar system. I looked at it a couple years ago, and was a 10+ year payback. Don't think we will be in our house that long. But at the cabin, no hydro service, so off-grid solar is our only choice.
My charger there does keep stats but haven't really looked at them, and not sure if they are lost if I disconnect it. Will have a closer look next summer. Am upgrading my system to handle the Solterra charging. It can suck 1.76 kW per hour, and current panels are only 1000 watts. But I just bought additional panels ($189 per 300W panel) and will be upgrading to a 2.5 kW system. My current avg usage last summer was 2.4 kWh per day (TV, Starlink and lights, sometimes an X-Box with the kids). I have a 16.8 kWh battery bank right now upgrading to 21.6 kWh for next year, so lots of capacity there, too. 1000W per day was good enough for last few years.