I bought a 7500W portable diesel generator a couple of years ago, mostly because it was a good deal, and it was more fuel efficient than its gas counterpart.
But the real value came last week after hurricane Ike, where I had the generator and about 100 gallons of bio sitting in drums, when all of the service stations were dark or without fuel of any kind.

The only drawback is that my patio smells like a Burger King....


Go Bio !!!!