Suggestion with generators:
Run it only periodically to get your fridge cooled down and furnace running. Turn it off again. Use deep cycle batteries with solar and/or charger for less power intensive things.
Car chargers and LED lights are cheap.

If you've got even a small solar panel you can keep phones and lights going. Good if your generator dies or gas becomes unavailable. If a little clever you can hook an exercise bike to a DC generator to charge your batteries. A few cloudy days in a row, no gas to be had, you can charge up your batteries with muscle power.