Justin Olson, a Republican on the state's utility regulation board, announced Wednesday he's running for the U.S. Senate, becoming the fifth major candidate looking to take on Democrat Mark Kelly in one of the nation's top 2022 Senate contests.

The last commission meeting was a troubling example of failed leadership. Márquez Peterson now has a choice. She can double down on her mistake at the expense of Arizona’s future, or she show real leadership by putting the original Rules up for reconsideration in the next few weeks—and take the do over.

Clean energy advocates in Arizona watched four years of work essentially go down the drain as the Arizona Corporation Commission killed its own standards the body had initially approved several months earlier.

Commissioner Márquez Peterson’s energy-smart leadership has the Arizona Corporation Commission going in the right direction, making sure that Arizonans realize the full benefits of current energy market trends. Beyond being good for our wallets, it represents the most prudent, market-oriented, and conservative path forward for Arizona.

The Arizona Department of Environmental Quality is warning that contaminated water around Luke Air Force Base is linked to toxic foam used to put out fires and urging fire fighters to stop using the foam.

Rejecting arguments about economic development, clean air and even constitutional issues, a Senate panel voted along party lines March 31 to strip the Arizona Corporation Commission of its power to set energy policy for utilities.

A controversial bill to prohibit Arizona’s utility regulators from setting state energy policy appears dead after a Republican senator decided he cannot support it.

One can only wonder why the state legislators wish to undo the work of years by the Arizona Corporation Commission with input from citizens like me. Clean energy conserves our precious resources and keeps the air we breathe and the water we drink clean and healthy.

The Arizona Corporation Commission may be the next branch of government that legislators can force the Attorney General to investigate.

Arizona utility regulators approved a deal for EPCOR USA to purchase the beleaguered Johnson Utilities company and for customers to pay for part of the transaction with hikes in their monthly bills. The decision Tuesday split the Arizona Corporation Commission ...