Don't be too quick to dismiss the gasoline generator. I agree that storing a lot of gas can be dangerous and expensive. I don't know your situation in power outages, but where I live, when my house and neighborhood is without power, I can drive 2 miles and have always found operational gas stations. They are on a different, and clearly more reliable part of the grid. Thus, I just have to make "gas runs" to keep the generators going. I store just enough gas (5-10 gallons) to get thru 24-36 hours until I can resupply.

So, maybe it is worth thinking about how much you want to prepare for a large scale, wide spread power outage where there is no gas to be had anywhere close, or, like my situation, where you are just at the far end of a circuit that goes down whenever the wind blows a branch off a tree.

On one memorable occasion, we were without power for 7 days while I could see homes with power from my front porch. Everyone else was up except us.

Frankly, I would put more thought into what you want to power, how much power you need and consider a supplemental panel to power these circuits from a single point where you can plug in the generator. The alternative is running extension cords from the generator to the things you want to power.