Specifications include, but are not limited to: Consistent with Ind. Code § 8-1-2.5-6.5, the PBR study must include the following: a. Multi-year rate plans with incremental rate increases. b. Index-driven revenue formulas. c. Performance incentive mechanisms, including both rewards and penalties, for meeting, or failing to meet, metrics related to service or infrastructure investments. d. The use of performance incentive mechanisms in conjunction with traditional cost-of-service ratemaking, to provide regulatory oversight and ensure that rewards and penalties are equitably balanced and do not: (i) over-compensate electricity suppliers for benefits provided; or (ii) under-compensate electricity suppliers for costs and risks incurred; as applicable. e. Best practices for allocating the costs, benefits, and risks associated with performance incentive mechanisms between: (i) customers and customer classes; and (ii) shareholders; with affordability of service prioritized. f. Best practices for establishing quantifiable, verifiable, and clearly defined performance metrics in connection with performance incentive mechanisms. g. Best practices for the collection and protection of data from electricity suppliers as needed to justify or evaluate proposed or approved performance incentive mechanisms. h. Any other aspect of PBR that the IURC determines to be appropriate to incentivize electricity suppliers to provide value to ratepayers.