Some of these, along with their advantages and disadvantages, are listed below. Oil provides a high quality source of energy. Refined into gasoline, diesel, and other fuels which can be easily transported and used where they are needed. For this reason these fuels are used primarily for transportation, but are excellent for heating, industrial processes and generation of electricity. From domestic and Canadian wells, mostly.
Natural gas is the primary raw material for nitrogen fertilizer.
California's mountain reservoirs provides us with an excellent source of electricity. This is produced by turbine generators driven by the force of falling water. This source of electricity is derived through the controlled breakdown of fissionable materials such as uranium. Heat generated from this process drives steam turbines which in turn produce electricity. Solar energy is captured and used locally.