 Mark Diesendorf has suggested that the Australian Government has tried to stop the development of wind power, the lowest-cost, new, renewable electricity source, until such time as coal-fired power stations with CO2 capture and sequestration and possibly nuclear power stations are available.However, "clean coal" technologies may not be commercially available for at least 20 years.Furthermore, to bring down the high cost of nuclear power to a level where it could compete with wind power would require a new generation of nuclear power stations that is still on the drawing board, which could take at least 15 years.