On August 13, 2003, a single transmission line near Cleveland, Ohio, sags into an overgrown tree limb and short circuits.

The U.S. power grid is under strain. Aging infrastructure, rising demand and extreme weather are testing reliability.

Add Yahoo as a preferred source to see more of our stories on Google. The winter storm that stretched across half the country knocked out electricity to more than a million customers on Sunday, ...

BOSTON, Jan 24 — U.S. electric grid operators on Saturday stepped up precautions to avoid rotating blackouts as frigid weather hitting half of the country’s population stressed their operations. The ...

Jan 30 (Reuters) - Power demand ‌on the largest U.S. electric grid is ‌expected to peak just shy of the all-time winter record on Friday, as the PJM Interconnection region covering one in five ...

By Laila Kearney NEW YORK, March 26 (Reuters) - The U.S. technology industry is being pushed to shrink its power use in times ...

Electricity demand in the United States is increasing while the infrastructure needed to serve that demand is taking longer ...

It’s not just red tape that’s limiting the supply of electricity in America. Grids are physical machines, and they’re short ...