What type of electrical energy is used in homes and businesses in California and is produced from the heat energy of magma close to the earth's surface?

The type of energy your looking for is geothermal energy.

Explanation:

Geothermal energy is energy that comes from deep within the earth, From such things as magma or heat. In California at the Geysers there is a Dry Steam Power Station which uses geothermal energy in order to make energy. The way that works is Steam rises to a turbine which spins a generator that produces energy.

geothermal