Electricity Generation market includes power generation companies that produce electricity using a variety of sources such as hydro, fossil fuels, solar, nuclear wind and biomass. Natural gas and renewable energy sources are increasingly being used For generating electricity to reduce the greenhouse gas emissions. Renewable energy sources include electricity generated from solar, wind, hydropower, geothermal and biomass. The use of natural gas and renewable energy sources help to reduce the environmental damage caused by the earlier methods of using fossil fuels and coal.