AP: “California on Friday ordered rolling power outages for the first time since 2001 as a statewide heat wave strained its electrical system. The California Independent System Operator (California ISO), which manages the power grid, declared an emergency shortly after 6:30 p.m. and directed utilities around the state to shed their power loads. Pacific Gas & Electric, the state’s largest utility, tweeted that it would turn off power to about 200,000 to 250,000 customers in rotating outages for about an hour at a time. Other utilities were told to do the same. The emergency declaration ended just before 10 p.m. and California ISO said power had been restored statewide. ‘Extreme heat is really the driver behind this,’ said Anne Gonzales, spokeswoman for the power grid operator. The move came as temperatures around the state hit triple digits in many areas, and air conditioning use soared. Temperatures were 10 to 20 degrees above normal in some areas, Gonzales said.”