While it can feel like the world is in the midst of an energy transition—where one source of energy is replaced by another—that’s not what’s happening. Instead of transition, we’re in a period of addition. The growing use of wind and solar power is actually coming on top of increased consumption of coal, natural gas, and oil.

Utilities are now required to enter into long-term contracts to buy power from solar and renewable energy generating stations under new policy established by the Arizona Corporation Commission.

Public utility commissioners and policymakers need to think very carefully about passing the costs of these mandates onto consumers. Trading reliable, affordable power for less reliable, more costly alternatives deserves serious scrutiny.

Undoubtedly, natural gas and renewables are gaining prominence in Arizona and the nation. But it makes sense to keep all options on the table. In Arizona, coal and nuclear power have proven reliable for decades. They should continue to be part of an all-of-the-above energy mix alongside natural gas and solar for years to come.

Democrat Sandra Kennedy said Thursday there would be no need for voters to impose a renewable energy mandate if state utility regulators would do their job.

The state Court of Appeals last May upheld a trial judge's ruling that state Department of Revenue was wrong when it determined in 2013 the leased rooftop solar systems should be subject to property tax as electricity generating systems.

States that generate large amounts of renewable energy, such as California with its abundant supply of solar power, have to “sell” power to neighboring states at negative prices, meaning California is effectively paying Arizona to take energy from their systems.

Rooftop solar companies that lease panels to customers shouldn’t be charged property taxes for the solar arrays, an Arizona appellate court ruled Thursday.

Arizona saw a 6 percent increase in solar jobs in 2016, bouncing back from a sharp drop the year before but still trailing well behind the national average growth of 25 percent in solar jobs.

The state's largest electric utility may have outmaneuvered a utility regulator in the fight over its records about its campaign spending.