1) I was just quoting the manufacturer (I think it was VW now that I think about it), that their "logics" of 800V charging will save money is to reduce the capacity and therefore range, but since you can fast charge then it is ok. So, sure, if you take it with a grain of salt.1) It allows no such thing, nor does it affect charge rates of modestly sized battery packs. Note: Battery capacity is unchanged, despite the operational voltage chosen. Huge battery packs, such as might be found in a pickup or larger vehicle can take advantage of higher voltage to reduce charging wire size.
2) TX has a 70% increase in electrical cost. We have a 44% increase. Any way you slice it, that will be passed on to the charger costs. No question charging at home is cheaper. Guys like me are never home, so things like this matter. A LOT.
2) TX cost increase is due to the "winterization" and not connecting to the grid. They enjoyed the saving and they ended up having to pay for those emergency measure to keep power up. Also in oil country why would you care about EV? The whole "toll instead of fuel tax" thing is really stacked against fuel economy and in favor of larger less fuel efficient vehicle. If I were in Texas I wouldn't own an EV ever. Places are far apart as well, so the range gets eat up. The best place to drive EV is short range, high density, high traffic area like a city state. Singapore? London? Paris? LA? San Francisco? NYC? Phoenix?