Energy Saving Potency and Maintenance Costs Reduction in Water Treatment Plant (WTP) Pengok PDAM Tirtamarta Yogyakarta

Electrical energy production and electrical energy consumption in Indonesia increase 6.25% and 12.6 % y.o.y respectively. While the total installed capacity of power plants in Indonesia is 54664.5 MW. The gap between production and demand of electrical energy can be solved by energy conservation. Energy conservation is to find the potential of energy saving. The cost of processing raw water into clean water in water treatment plant (WTP) Pengok is calculated based on energy consumption and material cost. The energy saving potential in WTP Pengok is conducted by energy management and capacitors installation. The result showed that processing cost is lower than predetermined price by PDAM with the profit Rp1,266.44. On the other hand, energy saving by applying energy management is 389.69 kWh/month. While the saving through the installation of capacitors is 679.59 kWh/month.