Bulyanhulu is an underground trackless operation that uses long-hole and drift-and-fill as its principal stoping methods. Ore reserves are accessed via a surface shaft and an internal ramp system. The processing plant consists of a crushing and grinding circuit, a copper/gold/silver flotation circuit, a tailings thickening/filtration circuit and a tailings storage facility. This major gold mine relies on 15 InteliGen NT with gen-sets organized in 3 groups - 5x 630kW, 5x 630kW, 5x 1300kW, set up to provide a permanent parallel operation with 220kV grid in Import-Export mode due to inadequate grid supply for the whole operation.