The utilities area consists of an electricity supplier and a cooling water (water storage, water pump, and cooling tower) system. Cooling water used to condense the hot pyrolysis vapor goes to a cooling tower before being recycled. 5% of the water flow (4000 kg/hr) is assumed to be lost in the cooling tower and the loss is about 200 kg/hr for the 1 kton-dry EFB/yr plant. The temperatures of hot and recycled water are about 42 °C and 32 °C, respectively. These assumptions are used to calculate the TCI and operating cost of the utilities area.