INDONESIA is blessed with various energy sources. Aside from the conventional non-renewable energy source (oil, coal, and gas), it also has abundant geothermal energy potential, thanks to its location which lies right along the so-called Pacific Ring of Fire. Geothermal power plants (PLTP) are projected to be the new energy backbone as the world’s supply of oil and gas continues to dwindle.

According to an estimate by PT PLN (State Electricit