“No information furnished to the [Arizona Corporation Commission] by a public service corporation, except matters specifically required to be open to public inspection, shall be open to public inspection or made public except on order of the commission . . . or by the commission or a commissioner in the course of a hearing or proceeding.” A.R.S. § 40-204I. A plan for constructing a new plant in Arizona “is not open to public inspection and shall not be made public if disclosure of the information in the plan could give a material advantage to competitors.” A.R.S. § 40-360.02(D).
Schedules containing rates that are filed with the commission are open for public inspection. A.R.S. §§ 40-365, 40-367(B).
A.R.S. § 27-522(B) provides that records of an oil or gas well drilled in unproven territory shall be confidential for one year after completion of the drilling.