A utility trade group says Arizona Public Service should not be forced to disclose if it's responsible for millions in campaign contributions in the last Arizona Corporation Commission election. 

Gary Yaquinto with the Arizona Investment Council said said he recognizes the commission has broad powers to request information and data from public service companies. So long as that directly relates to rate-making.

“But the object of subpoenaing information about alleged campaign contributions has absolutely nothing to do with utility rates of APS or any other utility,” said Yaquinto. 

Yaquinto’s organization includes companies like APS and has filed letters arguing against Commissioner Bob Burns’ proposal to open the APS books and reveal if it funneled money into the campaigns of Commissioners Doug Little and Tom Forese. All of this takes places amid the ongoing fight over the future of rooftop solar and how APS should charge such customers.

The commission plans to hold a workshop on the issue later this month.