It was one of five statutes of the National Energy Act which was aimed at reducing our Nation's dependence on foreign oil. The waste heat or steam exhausted from the turbine is then used as a source of heat for an industrial or commercial process. A renewable resource is an energy source that is regenerative or virtually inexhaustible. Solar thermal technology converts solar energy through high concentration and heat absorption into electricity or process energy.
Wind turbines use wind flows to generate electricity.
Biomass energy is derived from hundreds of plant species, various agricultural and industrial residues, and processing wastes. Industrial wood and wood waste are the most prevalent form of biomass energy used by nonutilities. Geothermal technologies convert heat naturally present in the earth into heat energy and electricity. Hydroelectric power is derived by converting the potential energy of water to electrical energy by using a hydraulic turbine connected to a generator. In addition, renewable resources must provide at least 75 percent of the total energy input.