California grid operator calls for voluntary conservation
By JOHN ANTCZAK
Associated Press
LOS ANGELES (AP) — Operators of California’s power grid called for statewide voluntary conservation of electricity Wednesday as a heat wave spread over the West and they warned that there could be energy shortages if conditions worsen.
The call for conservation between 4 p.m. and 9 p.m. came as excessive-heat warnings expanded to all of Southern California and up into the Central Valley, and were predicted to spread into Northern California later in the week and get hotter over the weekend.
The California Independent System Operator said in issuing the “Flex Alert” that high temperatures were pushing up energy demand, primarily from air conditioning use, and tightening available power supplies. More of the alerts are possible through the Labor Day weekend.
Gov. Gavin Newsom emphasized the role climate change was playing in the heat wave as he urged residents to curb power use.
“All of us have been trying to outrun Mother Nature but it’s pretty clear Mother Nature has outrun us,” Newsom said. “The reality is we’re living in an era of extremes: extreme heat, extreme drought — and with the flooding we’re experiencing around the globe.”
The grid operator had said Tuesday that the need for voluntary conservation would be likely through the holiday weekend. It said it was taking measures to bring all available energy resources online, including issuing an order restricting maintenance from noon to 10 p.m. daily through Sept. 6.
The peak load for electricity demand in California is projected to exceed 48,000 megawatts on Monday, the highest of the year, the grid operator said.
The afternoon and evening time period for voluntary conservation is when there is most stress on the grid and solar energy production is declining. The primary ways to reduce household energy use are to raise thermostat temperatures, avoid using major appliances and electric car chargers, and turning off lights.
“If weather or grid conditions worsen, the ISO may issue a series of emergency notifications to access additional resources and prepare market participants and the public for potential energy shortages and the need to conserve,” Cal ISO said Tuesday.
The heat wave arrived amid concern about California’s power grid. In August 2020, a record heat wave caused a surge in power use for air conditioning that overtaxed the grid. That caused two consecutive nights of rolling blackouts, affecting hundreds of thousands of residential and business customers.
Gov. Gavin Newsom has proposed extending the life of the state’s last operating nuclear power plant by five years to maintain reliable power supplies in the climate change era. The proposal would keep Pacific Gas & Electric’s Diablo Canyon Nuclear Power Plant running beyond a scheduled closing by 2025.
Forecasters, meanwhile, warned of triple-digit temperatures with little overnight relief, as well as elevated risk of wildfires in much of the West.
“The big weather story this week will be a prolonged and possibly record heat wave building across much of the Western U.S. associated with a strong upper level ridge,” the National Weather Service wrote.
