Whole house generators are permanently connected to your electric system and, if you buy a big enough unit, can supply all your energy needs Portable generators are available for power outages as well as campsite or jobsite use Home generators are Propane Generators Generac Generators, Guardian Elite Generators, are some types of home generators.

Generators issues are usually engine related and not electrical troubles, Generac is another generator that you can purchase with a lot of wattage output. type and generator's of 10'000 watts or more are not considered portable in my opinion wattage. Power supplier's are great for camping trips if portable enough.

Power plant problems are from non maintenance that lead to problems during operation. troubles.

The usage of fuel will depend on the load that is applied to the generator set..

The wattage of different generator's can be found by doing some internet searches on the topic..