The top ten countries for total geothermal plant capacity remained (in descending order) the US, Indonesia, the Philippines, Turkey, New Zealand, Mexico, Italy, Kenya, Japan and Costa Rica, which together represented almost 86% of global geothermal installed capacity at the end of 2018. The US is the biggest market, with more than 25% of the installed capacity, followed by Indonesia and the Philippines with 13% market share, respectively.
Among the top ten largest geothermal power projects, four are located in Indonesia, representing almost 47% of the total capacity of these projects. The country, which is rich in geothermal resources, has over five gigawatts (GW) of project pipeline under various stages of development. GlobalData estimates that Indonesia will become the largest market by 2027, overtaking the US. Indonesia's Gunung Salak Geothermal Power Plant has remained the unchallenged leader in the list of top geothermal projects, with a capacity of 375 megawatts (MW).
