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

Cuba is slowly restoring power to 10 million people after its national electrical grid collapsed March 16, a blackout caused ...

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

Add Yahoo as a preferred source to see more of our stories on Google. STORY: Streetlights and storefronts across Cuba went dark Wednesday, as the national power grid collapsed for the fourth time in ...

Cuba's aging grid has drastically eroded in recent years, but the government also has blamed the outages on a U.S. energy ...

Winter Storm Fern exposed deep structural fragility in the U.S. power grid, with outages affecting up to a million customers despite years of warnings from reliability watchdogs. Industry ...

Cuba restored electricity to much of Havana within 24 hours after a second nationwide outage caused by a major power plant ...

March 21 (Reuters) - Cuba's national electric grid collapsed on Saturday, the country's grid operator said, leaving around 10 ...