In about 1997 I had a 5 day power failure. Really, really BIG storm! Fortunately, it was May, and the weather was nice. But my Maglites sure didn't cut it. I had a $4 headlamp I had bought at Target.
It used 4 AA's, and a PR base lamp. I quickly discovered that even a crappy headlamp is far better than a good flashlight for everyday tasks during a power failure. I had several sets of nicads, and I brought all of my chargers and batteries to work every day, and charged them up.
I also learned how hard it is to read by candlelight. I was lucky to have some candles on hand; most stores were without power also, and were closed, and those that weren't sold out of flashlights, batteries, and candles in the first day. For the first day or 2, there were hundreds of thousands of homes without power. I remember having to go to about a dozen gas stations before I found one with power
Five days without electricity...it got pretty boring. I was just happy to have hot water, and a gas stove. And free dry ice from work, which kept my food from spoiling.
Now I have a Photon Fusion, which is ideal as a power failure light. And lots of other LED lights, as well. My EternaLight Elite Xray got a fair amount of use, uring the last power failure. During a power failure, it would be nice to have enough CMG Infinities to have 1 or 2 lit in every room.