Coal-fired power plants (PLTU) dominate Indonesia's electricity generation capacity. According to statistics from PT Perusahaan Listrik Negara (PLN), the capacity of this type of power plant reached 21,000 GW as of December 2015, equivalent to 40 percent of the total installed generation capacity of 52.9 GW.
During 2015, self-generated electricity production (including rentals) totaled 176,472.21 GWh, a 0.67 percent increase compared to the previous year. Of this amount, 61.55 percent was produced by PLN Holding, and 38.45 percent was produced by its subsidiaries: PT Indonesia Power, PT PJB, PT PLN Batam, and PT PLN Tarakan.
Other PLN records show that compared to the previous year, the market share of oil and hydropower plants decreased, while the share of natural gas, coal, and geothermal power plants increased. The increase in coal-fired power plants is in line with the government's program to add power plants through the 10,000 MW Phase I program.
PLN's total production, including purchases from outside PLN, in 2015 amounted to 233,981.99 GWh, an increase of 5,427.08 GWh or 2.37 percent compared to the previous year.