Queensland has nearly 14,000 kilometres of high-voltage transmission network, transporting electricity from the generators to the distribution networks, and directly to large customers such as aluminium smelters.
The existing transmission network is owned and operated by Powerlink Queensland, a Queensland Government owned corporation.
The transmission network is continuing to develop in response to demand growth. Powerlink is expected to invest more than $3.5 billion in capital projects over the 5-year period to 2016-17.
Most of the Queensland power stations in the east coast network are directly connected to the Queensland transmission system. Electricity also flows between Queensland and New South Wales via the large-capacity Queensland - New South Wales Interconnector (QNI) and the smaller Terranora interconnector.