Your news feature ( N C E 2 5 October) regarding wind energy would indicate that turbines on masts are the only form of harvesting wind power.
Unfortunately these wind turbines are unable to utilise all the power available and, like the windmills of old, are restricted by not being able to rotate beyond about 30rpm while pitch control is required to avoid structural failure.
More wind efficient designs are available that are yet to be developed and are based on wind collector arrangements which allow the use of smaller diameter turbines operating at higher speeds of 500-1,000 rpm. This eliminates the need for pitch control and gearing for electricity generation.
The winds that blow over the west of Scotland will not be fully used by the present design of wind turbines.
HD Osborn (M), 15 Cowal View, Gourock, Renfrewshire, PA19 1EX