| Term | Definition |
| Fossil Fuels | Combustible materials such as oil, coal and natural gas that are composed of remains of formerly living material. |
| Hydrogen Fuel | Hydrogen gas or the chemical mixture of hydrogen and oxygen used to produce electricity. |
| Biomass Fuel | Disposed material or renewable recourses used to create energy or agricultural products. |
| Hydropower | The use of kenetic energy in moving water such as rivers or tidal currents to generate electricity. |
| Solar power | The use of sunlight to generate electricity. |
| Geothermic Energy | Energy generated from the heat produced beneath the earths mantle; usually in reference to the use of subterranean steam to drive engines that produce electricity. |
| Nuclear Power | Energy that is harnessed from reactions among radioactive isotopes. |
| Renewable Energy | Any source of energy that can be continually produced and is inexhaustible given current conditions. |
| photovoltaic | Capable of producing a voltage when exposed to radiant energy, especially light. |
| OPEC | an organization founded in 1960 of nations that export large amounts of petroleum: formed to establish oil-exporting policies and set prices. |