Scorching temps threaten California's electrical grid
California's power grid operator has called for a second day of voluntary energy conservation as the state swelters under a heat wave. The California Independent System Operator has issued a Flex Alert for 6 to 9 p.m. Friday. KTVU's Tom Vacar reports.
Top Videos
Scorching temps threaten California's electrical grid
Earthquake swarm strikes South Bay
CHP begins Thanksgiving holiday enforcement
Black Friday deals curbed by tariff-driven costs
Navigating holiday travel as a non-citizen
Laney College to make security upgrades
Officers detain teens with BB gun
Man receives 2 life sentences for brutal beating of "Grandma Huang"
Foster City man arrested in wife's cold case killing
Celebrating Native Culture: Oakland's Intertribal Friendship House
Older drivers' confidence plummets around age 70
Most Watched
Trump-Zelenskyy Oval Office confrontation
Woman sought after kicking dog in Pittsburg
Patient files lawsuit Kaiser Permanente, alleges sexual assault during surgery
Trump marks 30 days in Oval Office | West Coast Wrap
Gas prices climb in California while they fall in other states
Hundreds of NOAA scientists fired
Arrests and guns seized in probe of Oakland carjacking tied to pot dispensaries
Protesters work to disrupt ICE raid | West Coast Wrap
San Jose teen killed by alleged gang members for wearing red
