I just attended a 9,000-person medieval camping event, where most camps are lit with individual solar power. The only power grid usage by most of us was that site water was pumped by electricity. Due to high mineral content, few of us drink straight from the tap, and every camp has stored water, soft drinks, and so on.

The entire county lost power for about 8 hours. From the social media posts, you would have thought people were undergoing severe hardship, because they had to wait 1/3 of a day for their propane-heated showers. Also, some were angry that the county hadn't done more to plan for these situations... which happen maybe once every decade or so.