Southwest Gas agreed to pay a $2 million penalty to the Arizona Corporation Commission and upgrade plastic piping of the type ...

Some of the votes Americans cast on Tuesday that may have mattered most for the climate were quite a bit downballot from the presidential ticket.

Some races, such as the 6th Congressional District battle between incumbent Juan Ciscomani and challenger Kirsten Engel, remain exceptionally close.

Arizona regulators' decision in 2021 to cut Pinnacle West's allowed return on equity to 8.7% from 10% contributed to a $200 million rate cut in 2022. It appeared earnings wouldn't reach 2021 levels ...

The Arizona Corporation Commission announced Friday that it reached a consent agreement with Southwest Gas that includes the civil penalty and requires more inspections. At issue is piping that can ...

Arizona will require much more energy ahead, and the vote for Corporation Commissioners will help determine how we get the ...

The Arizona Corporation Commission imposed a penalty on Southwest Gas for two pipe incidents in the East Valley in 2021, one ...

The Arizona Corporation Commission will have at least two new commissioners, and with the change, there is hope that the ...

The Arizona Corporation Commission will have at least two new commissioners, and with the change, there is hope that the ...

But two of three Democratic candidates for the three ACC seats being contested say they're not ready to concede because more ...

The Trump victory alters the outlook for many companies with a sizable Arizona footprint, including banks, supermarkets and solar-energy suppliers.