(1) The commission may approve a cost-tracking adjustment for a public utility regulated under this part consistent with its regulation of public utilities under Title 69, chapter 3.
(2) Notwithstanding any service options that the commission may require, a public utility shall offer its customers the option of purchasing a product composed of or supporting power from certified environmentally preferred resources that include but are not limited to wind, solar, geothermal, and biomass, subject to review and approval by the commission. The commission shall ensure that these resources have been certified as meeting industry-accepted standards.