A modest supply of stored gas, and longer then no generator at all. Yeah, it would be nice to have solar panels and a bank of deep cell batteries...
Propane genny I think would be the ticket for a moderate long term use, say a month or two. It stores forever and you can own your own tank.
I have a 250 gallon one filled, it sits here, don't use it for anything at the moment, but no propane genny yet, just a cheap used gasser. I do have two wall heaters I used to run, but no need for it with wood.
Solar, you can start small for the price of a big screen TV. Or a toy quad, etc. A few panels, charge controller, set of golf cart batts ain't that much today, prices have dropped over the years. Inverter or not depending on what you want to run. DC appliances are out there.
Buddy of mine had a slick solar rig for his cabin, it was several panels on a frame, then a rolling box that held a few batteries and the controller/charger/inverter with the receptacles on it. Takes like 15 minutes to set it up off the trailer, and then plug everything in. Ran his whole whole cabin, or did, he sold the cabin but kept the gear. You'd walk in and couldn't tell he wasn't grid connected, TV, overhead ceiling fans, window fans (no ac, just fans) electric lights, all that. I *think* at the time all complete and built to be easy to set up like that cost him just under ten grand, but I know panels and such dropped in price a lot since then. Batteries though are still spendy. He would roll the cart into the cabin, then just prop up the panels outside, and snake the cord up through the floor. The cart he stashed under the stairwell, then plugged it into the house wiring. To get from the trailer up into the house he just laid out some supported planks like a track, so it rolled easy right from the trailer. The panels, two guys , grab an end, walk it over, prop it up aiming at the south, attach to installed grounding rod right there. It would have been doable with just one guy and a hand truck.