1. Hydro energy or hydro Electric power plant
2. Nuclear energy or nuclear Power Plant
3. Fossil fuels: i) Thermal energy (by combustion of coal) or Thermal Power Plant ii) Natural gas energy or Gas Power Plant iii) Diesel energy or Diesel Power Plant
4. Solar Energy: Solar Power plant i) Photovoltaic Systems (Direct conversion to electricity) ii) Solar Thermal Power plant (In direct conversion to electricity)
5. Geothermal Energy or Geo thermal Power Plant
6. Bioenergy: Bio-Mass Power Plant i) Biofuels(e.g. Bio-diesel, Ethanol) ii) Biomass (e.g. sugar cane bagasse, farming waste, forestry waste etc.) iii)Biogas (it is produced from any organic waste materials. It contains mixture of methane(50-65 % in volume) and carbon dioxide