Cogeneration simply means generating your own electrical power that is used to supplement power from the electric utility. Almost any type of energy can be used locally to cogenerate power. Chemical energy in the form of diesel fuel, gasoline, natural gas, and others. Waste heat from an industrial process such as heat-treating or waste material from a manufacturing process such as wood chips can be burned and the heat used to run a steam turbine. wind power solar energy - photovoltaic power geothermal hydroelectric And many others.
Gasoline or diesel fuel
Geothermal energy utilization does not cause air pollution as fossil fuelsGeothermal energy is renewable source of energy while fossil fuel is not.
food
After it's been pumped down into hot rock, the resulting steam and hot water can be used as a source of heat. The steam and hot water also serve as a source of power to drive turbines, which generate electricity. These are all substitutes for fossil fuels. energy from earth are not pollutant and provides sufficient substitute energy. some examples are energy from waves, volcanoes, solar, and wind.
Hydraulic (water) and Nuclear.
They have been the most efficient energy source available.
hydroelectric energy is free to the fuel fossil
wind is not friendly to the environment ,as fossil fuels are not burnt to generate electricity.
Most countries burn fossil fuels to generate electricity.If they used solar power to generate electricity, thenThey would not have to use so much fossil fuel.Solar Energy itself does not reduce the use of fossil fuels. But the use of solar energy should hopefully reduce the need of fossil fuels to create energy, so therefore the more we can use solar power as an energy source instead of fossil fuels, the more we reduce the use of fossil fuels.
Oil
fossil fuels can be used as an energy source to power all vehicles and most machinery
Mechanical energy
Nuclear energy that is the source of sun energy which in turn is the source of fossil and renewable energies.
Chemical energy
No it is its own source of energy
Fossil fuels.
Fossil fuels are exhaustible. Electric energy is an alternative.
Currently, human's conventional source of energy is fossil fuel.