My non-techie neighbor decided he wanted to go solar, starting with powering his garage and basement. Told him the problems but he was a true believer (from Internet chatter, like everyone comes out ahead when they go to Vegas). Through experience he found out you need a lot of solar and storage capacity to keep the system up. Like even in sunny South Dakota you need three days reserve in storage at the maximum energy per day. Some days he used a lot, others not so much. Need to design to peak days. What finally killed the project was battery maintenance and the fact that the deep cycle lead-acid batteries loose capacity EVERY charge-discharge cycle.
And this was during the summer when we have a good sun angle. We had fun playing with it anyway. Of course a sophisticated system would do better but would way eclipse the cost of running off the lines.
