Arizona regulators decided Thursday to delay a decision on whether to increase fees and reduce payments for rooftop solar customers of Fortis Inc.’s UNS Electric utility.

The Arizona Corporation Commission voted 4-1 to preserve so-called net metering payments to UNS residential solar users until the conclusion of a separate case that will determine the value of local solar power, said Angie Holdsworth, a commission spokeswoman, in an e-mail statement.

UNS Electric, which serves about 93,000 customers in Arizona, had proposed cutting credits and imposing demand charges for those who install rooftop systems. The closely-watched decision was seen as a bellwether for how regulators would rule on home solar proposals from other utilities in the state.

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