The Arizona Corporation Commission announced Sept. 12 that it approved applications by Tucson Electric Power Co. and UNS Electric Inc. to adjust compensation to customers exporting electricity onto the grid, wrapping up the agency’s years-long bid to develop a replacement of its net metering program. Export rates for Tucson Electric customers who connected solar power rooftop systems after Feb. 24, 2017, was set at $0.0964, while rates for UNS Electric customers who linked systems to the grid after Aug. 18, 2016, was set at $0.115. The rates apply to new distributed generation customers who will have the option of selecting from existing time-of-use rate schedules. The rates for the excess energy is determined by a “Resource Comparison Proxy” with a five-year rolling average of a utility’s solar power purchase agreements and utility-owned solar generating facilities. Both companies are units of Fortis Inc.