I lived for nine years somewhere with quite regular power outages. They came without warning but after a few years living there you could kind of guess when they'd be likely to come. We lived in a flat, so no electricity meant no water, which was more annoying. We had even more regular water outages than we did power, actually.
We stored containers of water for flushing the toilet, but we'd buy cheap bottles of mineral water for washing with, since the stored water went a bit manky sitting there for months waiting to be used.
For the power, we just had candles, mostly tealights. We had gas for cooking anyway. I have a kindle so could keep occupied, but we also had a few power banks for other devices.
The hardest was last year when we had a huge ice storm that took out the power (and consequently the water) and the 4G. No heating, no washing, almost no connectivity at all. The shopping malls had generators so everyone was huddled in them, staying warm and charging their phones. They got everything back online in less than 24 hours, but it was a bit grim.