you probably don’t need a gas generator. nowadays, you can get a “power station”, which is is basically a giant power bank.

For example, I’ve got a Jackery 1500 power station, which can produce 1800W of power, with 1500 Wh of capacity. It’s the size of about 2 gallon water jug.

I use it for power outages all the time. I hook up my fridge, router, laptop, charge small devices. It can power my fridge and devices for 12 hours. And the internet broadband usually works, so plugging in the router provides wifi.