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 already has one of the largest nuclear power plants in the nation and more might be coming — though possibly in smaller form and years down the road. In an unusual joint announcement on ...

A Republican measure that would waive certain state regulations to allow data centers and other large industrial energy users to build small nuclear reactors in rural Arizona inched closer to ...

TVA is dealing with unplanned outages at all three of its nuclear plants, which are typically stable. The necessary upgrades will cost TVA millions on top of the billions it's spending to build new ...

A law passed in 1982 was supposed to have created a permanent dumping ground for nuclear power plant waste − considered dangerous for thousands of years after its produced. Four decades later, no ...

The Trump administration rescinded firings of hundreds of employees at the agency that oversees the nation's arsenal of nuclear weapons.