In State v. Tucson Gas, Electric Light & Power Co., 15 Ariz. 294, 138 P. 781 (1914) the court labeled the Commission's powers "extraordinary and unusual," summarizing them as follows: The Corporation Commission, therefore, has been vested by section 3 . . . with full power, with the command to exercise it: (1) To prescribe just and reasonable classifications to be used; (2) just and reasonable rates and charges to be made and collected; (3) reasonable rules, regulations, and orders by which public service corporations "shall be governed in the transaction of business within the state." Id. at 304-05, 138 P. at 785.