I know what you're going through. We had a 7 day outage after hurricane Sandy in 2012. We only had a 750 watt Honda genny which we used for charging cell phones, TV, lights & computer. No water A/C, cooking or refrigeration. We had to siphon gas from our 3 vehicles since no nearby stations were pumping. Showered at a relatives place 45 minutes away. It got old very quickly.
After that incident, I bought a 12KW PTO generator powered by my Kubota. I fuel the tractor from my 1000 gal heating oil tank which would last a month if necessary. Only used it twice for short outages since.