Section 75.15. Treatment of stranded costs

If a net metering small commercial, commercial or industrial customer’s self-generation results in a 10% or more reduction in the customer’s purchase of electricity through the EDC’s transmission and distribution network for an annualized period when compared to the prior annualized period, the net metering small commercial, commercial or industrial customer shall be responsible for its share of stranded costs to prevent interclass or intraclass cost shifting under 66 Pa.C.S. § 2808(a) (relating to competitive transition charge). The net metering small commercial, commercial or industrial customer’s stranded cost obligation shall be calculated based upon the applicable ‘‘base year’’ as defined in this chapter.