This investment plan outlines four areas of alternative energy development to achieve Thailand's 20 per cent alternative energy target by 2022: 1) increasing the share of power generation from renewable sources by small power producers; (2) increasing the share of thermal power from renewable sources; 3) promoting the use of bio-fuels for transportation; and 4) promoting the use of natural gas for vehicles. The plan proposes separate strategies for advancing clean energy in the public and private sectors.