Power generation refers to the use of power generating equipment will be water, fossil fuels (coal, oil, natural gas) heat, nuclear energy and so on the raw energy into electrical energy production process. Used to supply all sectors of the national economy and people's living needs. Now power generation is still using fossil fuels as the main form of power generation, but not many fossil fuel resources, increasingly depleted, mankind has gradually more began to use solar energy, wind energy, geothermal energy, ocean energy and other sources of energy to generate electricity.