Screening. All large-scale solar energy systems shall have the least visual effect practical, as determined by the Planning Board. Based on site specific conditions, including topography, adjacent structures, and roadways, reasonable efforts shall be made to minimize visual impacts by preserving natural vegetation, and providing landscape screening to abutting residential properties, public roads, and from public sites known to include important views or vistas, but screening should minimize the shading of solar collectors. No more than 15% of the total existing brush, trees, and other perimeter screening vegetation on a parcel of property may be removed in order to accommodate a solar farm. Appurtenant structures such as inverters, batteries, equipment shelters, storage facilities, and transformers shall be screened.