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.

Arizona has become the U.S. home of one of the most important high-tech companies in the world. It's going to take some time to process all this.

WASHINGTON – The Trump administration announced a wave of regulatory rollbacks on Wednesday that included a repeal of emissions limits on power plants, reduced protections for waterways and a reversal ...

Houston-based Chevron Corp. (NYSE: CVX) sees Texas as a very attractive place to develop power plant projects for data centers.