Continuing the theme of efficient energy sources, in this case at Fremantle WA.
"The CETO process consists of hundreds of underwater buoys, each attached to a pump. Movement of the buoys sends pressurised water to shore for use in generators or desalination plants. Tim Sawyer estimates 35% of Australia's energy needs is practically and economically extractable now."
http://www.abc.net.au/rn/scienceshow...08/2378304.htm
http://www.carnegiecorp.com.au/index...o/what-is-ceto