Choosing the right generator isn't rocket science, but you’ve got to get it...

https://oliviamaids.com/how-do-i-estimate-total-wattage-for-lights-fridge-and-tools-together/

Choosing the right generator isn't rocket science, but you’ve got to get it right. First, check your total wattage so you don’t overload the unit. Think about your fuel too—diesel is reliable for long days, while petrol handles light jobs easily