Renewable energy in the Cook Islands is primarily provided by solar energy and biomass. Since 2011 the Cook Islands has embarked on a programme of renewable energy development to improve its energy security and reduce greenhouse gas emissions,[1] with an initial goal of reaching 50% renewable electricity by 2015, and 100% by 2020.[2] The programme has been assisted by the governments of Japan, Australia, and New Zealand, and the Asian Development Bank.[2][3]