The HVDC light station at Mullumbimby was constructed in 2000, however a fire occurred in 2012 at the Mullumbimby System 1 converter building resulted in the complete destruction of the System 1 Converter.

Powerlines Plus were engaged by ABB to conduct construction of the new System 1 Converter. The installation works includes new Valves, Converter Reactors, Smoothing Reactor, Wall Bushing, Capacitors, Reactors, Resisters, Arrestors, Breakers & Disconnectors, Voltage and Current Measuring Devices, Cables & Valve Cooling Equipment.