Where?! Austin?! Haha. Just stop. Our lows are in the high 80’s on a good day in the summer! Usually, that low happens at 4 am and is only that temp for an hour or two. At midnight, the temp is usually about 90. Also, humidity is extremely high, making our temps much more deadly. So, just stop. You definitely, definitely do not know what you are talking about.
Also, you can’t just turn off your AC when there’s cloud cover and easily get your house cooled back down when the sun comes back out, as you are implying. It takes a great deal of energy and an over-powered HVAC system (which no one has) to cool a house quickly when the sun is out.
I’m not sure what you are doing right now. Is your goal to try to convince me, a resident of this place who has tried for years to afford a solar system, to embrace a solar solution? I already want one. If you know of a vendor in south Texas that can install what’s needed to keep me and my family alive when the power goes out for the low prices you claim, please let me know who they are and I will call them!
Until then, I will just have to make do with my Generac natural gas generator that can run everything when the power goes out. That solution only costs $15k installed. There’s a reason people get whole-home generators instead of off-grid solar here. That reason is very obviously price. One day I hope to afford a solar solution (panels/batteries/installation) that can keep everything running when we lose power for several days at a time, but as of today, that is at least a $100k investment for a 1500-2000 sqft home.