Arizona regulators opened a prehearing conference on a 4% general rate increase request by UNS Gas Inc., the UniSource Energy Corp. natural gas distribution utility in parts of Arizona. The Arizona Corporation Commission has scheduled evidentiary hearings to run through Feb. 17. UNS is asking for an annual revenue increase of $5.6 million, increasing its rate base to $254 million, effective May 1. Tucson, AZ-based UniSource Energy is the holding company for UniSource Energy Services, which provides gas and electric services to about 237,000 customers, along with Tucson Electric Power, which provides electricity to more than 400,000 customers in southern Arizona.

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