A federal judge sided with 22 Republican state attorneys general to block New York's first-in-the-nation climate superfund fee, ruling the Clean Air Act preempts states from making polluters pay for storm and flood damage.

A stationary turbine on a windy day usually isn't broken. It's hit a safety limit, a grid order, or a maintenance window.

The White House set a 15% tariff on polysilicon and, separately, a hard minimum price. The two tools do very different jobs, and the gap between them explains why solar makers are watching closely.

AI data centers are on track to use as much power as Japan by 2030. Here is why the chips draw so much electricity, how much water cooling takes, and what it means for your bill.

With 67 million people's power on the line, PJM leaned on paid demand cuts and data-center curtailments to keep the lights on through the heat.