Last week we got hit with an ice storm. We lost power for about 2 and half days and my parents were out for over 4 days. I have a 750w old generator. It has never worked until in a fit of desperation I figured out the problem and fixed it. In the process of fixing it I noticed it was very rusty in the tank. It survived. It was enough to run a space heater and keep us at 50 degrees inside, but not enough to run the fridge. But we used buckets of snow to keep the food cold. I was fortunate enough to that my brother in law got power and we borrowed his 6500w generator. That baby did everything we needed and more. So I decided to go and get new generator. But I noticed they have inverter generators too. But not sure what the difference is other then twice the price and they burn way less gas. Can anyone enlighten me on the difference?