Spark Infrastructure Group Ltd. engages in the investment in regulated utility infrastructure. It operates through the following segments: Victoria Power Networks, SA Power Networks, TransGrid, and Other. The Victoria Power Networks segment holds interest in electricity distribution businesses in Victoria namely, CitiPower and Powercor. The SA Power Networks segment covers its electricity distribution business in South Australia. The TransGrid holds interests in electricity transmission business in New South Wales (NSW) Electricity Networks Assets Holdings Trust and NSW Electricity Networks Operations Holdings Trust. The Others segment represents the economic interest in DUET Group. The company was founded in 2005 and is headquartered in Sydney, Australia.