A new study identifies a minimum $4.5 billion in necessary transmission investment in the next 10 to 20 years in Colorado.

Amazon’s power bill has been soaring lately as it adds data centers to deal with rising demand for AI and cloud services.

Solar generators are trending, but what happens when the sky turns gray? This device keeps your power running.

A massive coronal hole on the Sun is sending solar wind toward Earth, increasing aurora visibility in higher latitudes.

Read more about these maps. Please be aware that wind gusts can be 40 percent stronger than the average wind speeds presented here, and stronger still in thunderstorms and squalls.

PHOENIX — The first workweek of February is starting off feeling more like April! On Tuesday, highs will continue to run 10-15 degrees above average across Arizona and will reach for records in ...