A member of the Arizona Corporation Commission wants the state's largest electric utility to disclose whether it spent money in the 2014 elections.
Commissioner Bob Burns said in a letter to the top executive at Arizona Public Service Co.'s parent company that the utility should disclose its political spending in the interest of transparency. He expects a response in 30 days.
APS has been the subject of ongoing speculation that it spent $3.2 million backing the 2014 elections of commissioners Tom Forese and Doug Little.
The company won't confirm or deny that it contributed to groups that backed the candidates.
Burns said the alleged campaign contributions make the public look at the commission "with suspicion and mistrust."
APS spokesman Jim McDonald says the utility is evaluating the letter.