World

America's changing power grid faces a powerful El Niño

A powerful El Niño could bring major shifts in electricity supply and demand across the U.S. this winter, posing new challenges for utilities. Why it matters: The U.S. power grid has far more solar, wind and battery storage than during the last major El Niño, and the ongoing event could reveal whether that changing energy mix has made the grid more resilient or left it vulnerable in new ways. Driving the news: A very strong El Niño is strengthening in the tropical Pacific and is expected to cont