I do see reduced range in the summer from running the A/C. Not enough to be a problem (on trips my wife wants to stop every 200 miles anyway to walk around for 10-15 minutes, which is conducive to how often and how quickly our EV charges). But as a data hog I like to watch the numbers and can see a difference. That one aspect alone would add a significant amount to my power bill if I didn't have lots of solar (which gives me plenty of free power in the summer anyway). And even in the winter when it's really cold (really cold to us in Alabama LOL) those tend to be sunny days too (free solar to help warm the home and do the extra charging the EV needs to compensate having to keep the cabin warm). Plus solar panels have a weird feature in that they operate more efficiently in cold weather (assuming everything else being equal).
For what it's worth, this past December we had a horrible cold snap in which for one day the high never got out of the teens. That's bitter cold to us. LOL I had the EV sit outside in the cold all day (it was Christmas holidays) so I could experiment with the charge loss from cold. It lost about 10% doing nothing but sitting in the cold. That's not enough to be a show stopper (maybe my newish EV can handle the cold better than others). But it'd be enough so that if I lived up north I might rethink the math on how much having an EV adds to the power bill for it to be worth the gas savings. I didn't drive the EV during those cold days and I didn't try to charge it at a fast charger (to see if the cold reduced my charging speed as much as the EV forums were complaining about). So I can't say from experience if trying to road-side charge an EV in bitter cold is as bad as the EV forums make it out to be.
We installed solar with battery back up and also purchased a couple mini split heat pumps. The Mini-splits saved us a lot of electricity this summer which is usually when I use the most electricity but I think this summer I banked electricity every month so far.
I won’t make as much electricity in the winter but the low temperatures make my solar cells much more efficient so that it won’t be horrible. Since having solar I have never had to use a backup generator and can’t even tell when the neighbors don’t have electricity until night time when we notice all the lights off around us.
If you depend on government you are unwise. Rolling blackouts will become more and more frequent in coming years. Even without a generator or solar a battery backup (large one) would keep you running during the rolling blackouts that are bound to come to more than just California.
Don’t let the government get involved in your preparations else they might decide to make you share what you have with those who were too foolish to prepare.
Prepare.