One of the things I enjoy about camping is catching up on my sleep. Do your activities while it's daylight, sleep at night.
I don't even have a fire when I'm camping alone.

For home I have a couple of Krill lights- AA powered chem-lite simulators which are quite economical on batteries.
And other lights and candles.

When my wife visits her parents they seem to have coincidental power outages from hours to days. She wears a flashlight around her neck for those times. Her brother and parents have dead batteries in their flashlights..... which they don't look for until it gets too dark to find them....