In 2015, the New York Tax Law was amended to provide exemptions from sales and use tax for certain sales of electricity generated by residential or commercial solar energy systems and sold under a written solar power purchase agreement (“PPA”) (See N.Y. Tax Law §§ 1115(ee)(2), 1115(ii)(2); see also TSB-M-15(5)S). These exemptions were in addition to the already existing sales tax exemptions for the sale and installation of residential and commercial solar energy systems equipment (See Tax Law §§ 1115(ee)(1), 1115(ii)(1); see also TSB-M-05(11)S and TSB-M-12(14)S).