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California ordered rolling power outages for the first time since 2001 as a statewide heat wave strained its electrical system. Photo: Apu Gomes/AFP via Getty Images

California on Monday avoided a repeat of the rolling blackouts imposed last weekend, as the state's grid operator cited lower temperatures and conservation.

Where it stands: The state is nowhere near out of the woods in the near term, and certainly not in the long term as officials scramble to shore up the grid against heat and wildfire threats. The California Independent System Operator's current "flex alert"calls for conservation steps and warns of outages remains in effect through Wednesday.

What's new: Gov. Gavin Newsom on Monday demanded that state power officials conduct an investigation into the outages Friday and Saturday.

  • "These blackouts, which occurred without prior warning or enough time for preparation, are unacceptable and unbefitting of the nation’s largest and most innovative state," he said in a letter to the state's utilities commission, energy commission and grid operator.

The intrigue: The blackouts show the challenges facing the nation's most populous state as it moves away from fossil fuels and expands the use of renewables, notably solar power that wanes late in the day when demand is high.

  • Newsom's letter calls the failure to predict shortages on Aug. 14 and 15 "unacceptable particularly given our state's work to combat climate change." It calls on the grid operator to review its assumptions around solar capacity.
  • "The emergency outages, though brief to date, demonstrate the challenges California faces in making sure its transition to cleaner power doesn’t come at the expense of reliability," the Wall Street Journal reports in a deeper look at the topic.

Go deeper

Invenergy is building the largest U.S. solar farm in Texas

Invenergy solar panels in Bozeman, Montana. Photo: William Campbell/Corbis via Getty Images

Chicago-based Invenergy has announced the green energy generation and storage operator is installing what will be largest solar farm in the United States in five phases over the next three years through a $1.6 billion investment.

Why it matters: The 1,310-megawatt facility based in northeastern Texas aims to help consumer brands like AT&T, Honda, Google and McDonald's meet their clean energy goals while supplying 300,000 homes across three cities with power upon its completion in 2023.

3 hours ago - World

Map: A look at world population density in 3D

This fascinating map is made by Alasdair Rae of Sheffield, England, a former professor of urban studies who is the founder of Automatic Knowledge. It shows world population density in 3D.

Details: "No land is shown on the map, only the locations where people actually live. ... The higher the spike, the more people live in an area. Where there are no spikes, there are no people (e.g. you can clearly identify ... the Sahara Desert)."

Biden's Day 1 challenges: The immigration reset

Illustration: Aïda Amer/Axios

President-elect Biden has an aggressive Day 1 immigration agenda that relies heavily on executive actions to undo President Trump's crackdown.

Why it matters: It's not that easy. Trump issued more than 400 executive actions on immigration. Advocates are fired up. The Supreme Court could threaten the Deferred Action for Childhood Arrivals (DACA) program, and experts warn there could be another surge at the border.