Estimasi Penghematan Biaya Operasi PLTU Dengan Cara Penggantian Bahan Bakar

Abstract

Per capita electricity consumption is a living standard index in a country. In Indonesia, as number of people and industries are increasing, the need of electricity is also increasing. As a result of the rising world's price of fossil fuel, PT. PLN (Persero), a local state utility, needs to find a better way to reduce its operational cost, 75% of which is the price of plant's fuel. One possible solution is to replace liquid fuel (HSD and MFO) with LNG or coals. This research aimed at fuel cost comparison between the use of LNG, coals and the liquid fuel in a steam power plant. The research focus on the cost reduction but neglects the actual operational implementation. The results of analysis, based on 51465 kW power and 85% boiler efficiency assumption, showed that the mass rate flow of HSD, MFO, LNG and coal are 13446,95 kg/h, 14328,98 kg/h, 1156,7 kg/h and 29032,52 kg/h respectively. Furthermore, annual fuel cost of HSD, MFO, LNG and coal are 890.73, 530.61, 154.63 and 87,61 billions respectively. The fuel cost saving from the replacement of HSD with LNG and coals are 736.1 and 803.12 billion/year respectively. As comparison, the fuel cost saving from the replacement of MFO with LNG and coals are 375.98 and 443.0 billion/year respectively