SPP is a special purpose vehicle built to run the 140 km Gas Transmission System project from Gundih, Cepu to Tambak Lorong Power Plant in Semarang, Central Java. SPP purchases gas from PT Pertamina EP at Gundih area and hands over the gas at Tambak Lorok Power Plant that is owned by Indonesia Power (PLN) in Semarang. The distribution of natural gas to Tambak Lorok Plant gate is a way to substitute diesel and in line with the government’s program to push down subsidies for oil.