Tenn. Code § 66-9-202
The general assembly finds that the use of solar energy can help reduce reliance on depletable energy resources such as oil, natural gas and coal, and that solar energy development should, therefore, be encouraged. Further, that as the use of solar energy systems increases, the possibility of future shading of such systems by buildings or vegetation will also increase. Therefore, the general assembly declares that solar easements may be established to allow the owner of a solar energy system to negotiate for assurance of continued access to sunlight. The general assembly further finds that encouragement and protection of solar energy systems is a valid objective which counties and municipalities may consider in promulgating zoning regulations.
T.C.A. § 66-9-202