Wind Landscape Scale
The term ‘scale’ does not refer to a definite dimension, but describes the perception of relative size between elements, for example a large-scale, open moorland or mountainous landscape and a small-scale, sheltered glen. To perceive scale, we rely on elements whose size and extent are recognisable to us – common features such as trees and houses. We use these as scale indicators to gauge the size and distance of other elements and make spatial judgements.
Landscape scale and openness are particularly important characteristics in relation to wind turbines because large wind turbines can easily seem to dominate some landscapes. For this reason, landscape scale can dictate the ability of an area to accommodate wind farm development, both horizontally and vertically.
A key design objective will be finding an appropriate scale for the wind farm that is in keeping with that of the landscape. The wind farm should be:
– of minor vertical scale in relation to the key features of the landscape (typically less than one third);
– of minor horizontal scale in relation to the key features of the landscape (where the wind farm is surrounded by a much larger proportion of open space than occupied by the development);
– of minor size compared to other key features and foci within the landscape; or separated from these by a sufficiently large area of open space (either horizontally or vertically) so that direct scale comparison does not occur.
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