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This is according to Bernard Oberholzer, a professional landscape architect who shared with delegates at the recently held WindAc Africa conference some guidelines to selecting a suitable site for wind energy farm development while avoiding high visual sensitivity areas.
His insights stem from a 2014 study carried out by the Council for Scientific and Industrial Research (CSIR) which aimed to refine the boundaries of the areas that would be suitable for producing wind energy. Working on eight identified focus areas, Oberholzer's team was responsible for the visual, landscape and scenic resources component of the study. His team was asked to map the scenic resources, who would be the visual receptors, and to assess the visual sensitivity of the eight focus areas, as well as to establish limits to development density.
Contributing factors to consider for visual sensitivity, he explained, include topographic features, water features, and cultural landscapes, while for sensitive receptors (those who will see the wind farms and how they will be affected), protected areas, game farms, private nature reserves, human settlements, scenic and arterial routes, and heritage sites, should be taken into account.
Overlaying all these factors, Oberholzer and his team were able to synthesise a visual sensitivity map that outlined the different levels of sensitivity in each area and prescriptive buffer zones for development.
Oberholzer then went on to provide a number of guidelines to consider when selecting a development site in order to avoid high visual sensitivity areas.