Since starting its operations more than four decades ago, PT Vale Indonesia Tbk’s (PT Vale) vision has been to be a mining company caring for nature’s future. One way to achieve this has been to produce nickel using environmentally-friendly technology, which includes the operation of three hydroelectric plants: Larona, Balambano and Karebbe.
The plants supply the electricity needed to operate the smelting and nickel ore processing furnace at the process plant in Sorowako. The energy running Vale Indonesia’s three hydroelectric plants come from three lakes: Matano, Mahalona and Towuti. Water flows down Larona River into the turbines.
To control water levels at Lake Matano, 6 sluice gates in Petea operated manually depending on the height of water levels at lakes Matano and Towuti.