A classic example here of how 3 listed Wind Energy stocks are working together to drive uptake in alternative energy. Repower Systems AG, who make the world's largest commercially available wind turbines at 5 MW, have just signed a contract with Scottish Southern Energy and Talisman for a sale of two 5 MW units, to be located off the coast of Scotland.

In Windpower, size matters because by doubling the size of the windswept area, the amount of power increases by 8 times. This also means that the maintenance cost per megawatt declines significantly. Going offshore is important for the future of the industry too. Virtually no planning constraints, higher windspeeds and when the costs are recouped - admittedly after a longer time than onshore - cheaper and higher availability electricity.