The majority of electricity produced in the United States today comes from a steam turbine generator. Most steam generators are fueled by coal or nuclear power. A home steam generator is usually powered by gas or concentrated solar power.
A steam turbine generator for your home can be a great backup source of electricity during power grid failures. A gas steam generator is usually used in this case because they are ready to be used at any time of day. Most backup electric systems in homes, hotels, schools, and other buildings are steam turbine generators that are powered by gas. If a household is using a gas turbine generate to supply all of the electricity needed to the home it is probably because the home is not connected a the main power grid supply.
A home steam turbine generator that is fueled by the heat of a concentrated solar power system can be used as the main supplier of electricity to a home or can supply electricity to only a portion of the home. This system uses the amplified and reflected heat of the sun to heat water into high pressure steam that will rotate a steam turbine generator. These systems are used less as backup power systems because they require consistent sunlight to operate.