Because of the existing shortage of conventional energy sources, it has been determined to be in the public interest to encourage the use of solar energy for the heating and cooling of buildings and providing hot water for use in buildings or swimming pools. As a general rule existing zoning regulations for height, setback, and lot density limitations in residential areas are sufficient to permit adequate access to sunlight by each lot without obstruction by adjacent structures. Trees should be planted in such a manner as to prevent the casting of shadows upon solar collectors. However, where existing zoning is insufficient to provide adequate protection from interference by structures, trees or topography, it is the intent of this chapter to provide adequate protection for the use of solar collectors without at the same time causing undue hardships on the rights of property owners. [Ord. 817 § 8-3J.810, 2006.]