SECTION 1.  Section 5 of chapter 59 of the General Laws, as appearing in the 2016 Official Edition, is hereby amended by adding the following clause:-

Fifty-ninth, Any solar or wind powered system or device, and all supporting structures and devices, which is being utilized as a primary or auxiliary power system for the purpose of heating or otherwise supplying the energy needs of any entity that is otherwise found to be taxable under this chapter, shall be deemed personal property and shall only be valued as seventy-five percent (75%) of its actual cost and shall be allowed an additional five (5%) reduction in value for the purposes of all taxation under this chapter for every year from the date of its first assessment until the fifteenth (15th) year following its first assessment at which point such property shall be valued at zero ($0) dollars, as a reasonable allowance for the exhaustion, wear and tear, and obsolescence.

SECTION 2.  Section 5 of chapter 59 of the General Laws, as appearing in the 2016 Official Edition, is hereby amended by adding the following clause:-

Sixtieth,  Any solar or wind powered system or device, and all supporting structures and devices, which is being utilized as a primary or auxiliary power system for the purpose of heating or otherwise supplying the energy needs of any entity that is otherwise found to be taxable under this chapter, shall not be deemed a fixture of the real property upon which it resides and shall not be included in the value of the real property upon which it resides.