 Supply was also fed from the tramway 550-volt DC mains to a number of establishments along the tramway routes, such as butcher shops, sawmills and factories.By 1918, the whole of the tramways public power supply equipment in South Brisbane was sold to the City Electric Light Company, which developed a supply for South Brisbane from its power station in William Street.At the conclusion of World War I there was general support for the notion that the tramway system should be owned and operated by a public authority rather than a private company.