Hydropower has been recognised as one of the important sources for electricity generation under the Four-Fuel Diversification Policy (1981). The contribution of large hydropower plants to the electricity generation mix has grown from five percent (5,408.75 GWh) in 2010 to nine percent (13,937.63 GWh) in 2015. Of these, 9,864.51 GWh were from large hydropower plants commissioned from 2005 onwards. By 2020, 15% of the total electricity generation is targeted to come from large hydropower (Eleventh Malaysia Plan). The increase in the usage of hydroelectric power reduced a total of 5,034.53 Gg COeq and 4,152.96 Gg COeq of GHG emissions in 2014 and 2015 respectively from large hydropower plants commissioned from 2005 onwards. Details of this mitigation action are presented in Table A3.9.