President Trump and Taiwan Semiconductor plan a huge expansion of the company's complex in Phoenix. How will the firm and ...

An anti-nuclear group is planning a protest at Tucson Electric Power, following word that three utilities might pursue a new reactor in Arizona.

Power was out around Arizona on Friday due to the rainy weather. The Arizona Public Service Co., on its website, reported seven outages in metro Phoenix with 468 customers affected, four outages ...

It is affordable, reliable, and increasingly environmentally benign. For all the talk of desired diversity in energy sources, shutting down Arizona’s few remaining coal power plants is antithetical to ...