A Cardiff man's decades-old vision for a floating nuclear power plant has gained new relevance as the world seeks clean ...

Apache County’s energy future got a nod on the national stage this week, as U.S. Sen. Ruben Gallego spotlighted the Coronado ...

Ariz., warned of "loss of innocent life" and "escalation" in the region as Trump left the door open to strikes on Iran.

The pushback follows Trump’s encroachment on almost every congressional prerogative — from taking control of the power of the ...

EPA's plan to scrap a rule curbing power plant emissions has dimmed the outlook for U.S. carbon capture and storage projects.

In a dramatic policy shift, Tucson Electric Power says it will stop using coal ... submitted to the Arizona Corporation Commission. Called an Integrated Resource Plan, it would reduce TEP ...

Disputes among Republicans about parts of Trump's major tax bill threaten approval in the Senate and past compromises reached ...

Oil Fluctuates as Israel-Iran Conflict Fuels Market Volatility Oil prices were volatile in Asian trading Tuesday, as markets weighed the odds of a resolution to the Israel-Iran conflict against the ...

The decision is the latest chapter in the decadeslong battle over what to do with the waste generated by the nation's nuclear power plants.

Atomic Dreams explores nuclear energy's future in the U.S. through the history of Diablo Canyon, California's last operational nuclear power plant.

The Senate is divided on war powers as Trump weighs military action against Iran's nuclear sites. Some argue the Constitution ...