There are currently two main types of power plants operating in Nigeria: (1) hydro-electric and (2) thermal or fossil fuel power plants. With a total installed capacity of 8457.6MW (81 percent of the total) in early 2014, thermal power plants (gas-fired plants) dominate the Nigerian power supply mix.[1] Electricity production from hydroelectric sources (% of total) in Nigeria was reported at 17.59% in 2014, according to the World Bank collection of development indicators, compiled from officially recognized sources. There have been two main types of fossil fuel/thermal power plants in the country: (i) coal-fired and (ii) natural gas-fired.