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Climate

San Francisco Recorded its Hottest Day of the Year

On autumn heat waves, the VP debate, and solar tariffs

San Francisco Recorded its Hottest Day of the Year

Current conditions: Thousands of people in Taiwan have been evacuated ahead of Super Typhoon Krathon • Hurricane Kirk could veer toward Ireland • Forecasters are monitoring the warm Gulf of Mexico for signs of another potential storm expected to form later this week.

THE TOP FIVE

1. JD Vance and Tim Walz talk climate and energy at debate

Vice presidential hopefuls Republican JD Vance and Democrat Tim Walz discussed energy and climate change during last night’s VP debate. The topics were all but unavoidable after one of the costliest hurricanes in recent U.S. history devastated communities far from the coast the weekend before the debate. Vance refused to say with certainty that the climate crisis was caused by fossil fuel emissions, but said that if it were, the U.S. president would want to “reshore as much American manufacturing as possible, and produce as much energy as possible in the United States of America, because we’re the cleanest economy in the entire world.” What Vance is describing sounds suspiciously like the rationale behind the Inflation Reduction Act, which explicitly aims to build a green economy at home in the U.S. Walz more or less pointed that out in his response: “We’ve seen massive investments — the biggest in global history,” he said. “We’ve seen that the Inflation Reduction Act has created jobs all across the country,” including in manufacturing electric cars and solar panels. “It goes to show: Climate jobs and domestic manufacturing are popular ideas with the American public,” wrote Heatmap’s Jeva Lange. “Just don’t tell your boss, JD.”

2. Biden and Harris head to states hit hard by Helene

President Biden and Vice President Harris today will visit states ravaged by Hurricane Helene. Biden will travel to North Carolina, with plans to head to Georgia and Florida “as soon as possible,” according to the White House. Harris heads to Augusta, Georgia, today and will visit North Carolina “in the coming days.” Biden approved a declaration for a major disaster in South Carolina yesterday. He has directed FEMA administrator Deanne Criswell to remain on the ground in Asheville, North Carolina, to help identify ways to speed up recovery efforts in communities cut off by road closures and debris. CNN reported that in some areas, supplies are being delivered by mules. As of this morning, more than 1.3 million people are still without power across five states, with most of the outages in the Carolinas and Georgia. The storm’s death toll has risen to more than 160.

3. San Francisco records hottest day of the year

On the other side of the country, intense heat is breaking records. San Francisco recorded its hottest day of 2024 yesterday, with temperatures hitting 93 degrees Fahrenheit. The Sonoma County Airport hit 106 degrees. Other parts of the Bay Area were “as much as 35 degrees above normal” overnight, according to the San Francisco Chronicle. An excessive heat warning remains in place until 11 p.m. tonight. Here’s a look at some of the daily records set or tied:

X/NWSBayArea

Meanwhile, in Arizona, Phoenix recorded its hottest October day ever (of 113 degrees), breaking the previous 1980 record by a stunning 6 degrees Fahrenheit.

4. U.S. imposes tariffs on solar panels from Southeast Asia

The Commerce Department yesterday announced new tariffs on solar panel imports from Cambodia, Malaysia, Thailand, and Vietnam. Some U.S. manufacturers say Chinese companies are operating in those countries to get around U.S. duties on solar imports from China, and that the cheap imports hurt domestic solar panel producers. But others in the industry argue that low-priced imports are essential to ramping up clean-energy projects. “The targeted nations provide the bulk of U.S. solar cell and module imports,” Bloomberg reported, “and the swift imposition of countervailing duties means renewable developers will face higher prices for that equipment right away.”

5. Climate scientist Claudia Sheinbaum sworn in as president of Mexico

Mexico swore in its first-ever female president yesterday. Claudia Sheinbaum’s election has raised the hopes of environmentalists because she’s a climate scientist with a Ph.d. in energy engineering. She has vowed to boost the country’s renewable energy infrastructure and put forward a $14 billion plan for new energy generation that focuses on renewables. But, as The Washington Post noted, her ideas are “incompatible” with her other promise, which is to carry on the policies of her predecessor López Obrador and rescue the country’s indebted state oil company.

THE KICKER

A company called DairyX claims to have created a type of protein that can make plant-based cheeses stretchy, potentially solving the consistency problem that has long stumped makers of dairy-free cheeses.

Yellow

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Politics

Exclusive: Over 530 Local Laws Now Seek to Ban or Restrict Data Centers

The overwhelming majority of the ordinances were enacted this year, a Heatmap Pro review shows. They’re helping to drive an unprecedented surge of data center cancellations.

Local laws restricting or banning data centers.
Heatmap Illustration | Unsplash

America’s data center backlash is gaining steam.

Anti-data-center protesters briefly interrupted President Trump’s speech at a General Motors facility in Michigan earlier this week. A day later, the country music legend Willie Nelson called on Americans to “fight against data centers invading our land.”

Washington has yet to pass major data center regulation. But the backlash is already reshaping local zoning and land use codes across the country, according to an extensive review of public records conducted by Heatmap Pro. A surge of new restrictions and bans have killed dozens of proposed data centers this year.

More than 500 counties or municipalities now actively restrict or block new data centers, according to the review. This tally includes only the most severe constraints — such as steep setback requirements, impossible noise limits, or outright bans on permit approvals — that all but forbid the construction of a data center.

The overwhelming majority of these restrictions have been enacted since the beginning of the year. Nearly 190 have been passed since June 1.

The pace of moratoriums is “accelerating,” Peter Freed, a founding partner at the Near Horizon Group and the former director of energy strategy at Meta, told me.

Broadly, these new local restrictions seem to be succeeding. More than 50 data centers have been canceled so far this year after facing local pushback of some kind, according to a Heatmap Pro review of press accounts, public records, and project cancellations.

That’s more than twice as many projects as were canceled under similar circumstances in all of 2025, according to our data. Eight projects were canceled in July alone.

Ominously for developers, the rate of projects facing cancellations seems to be increasing over time.

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Uncommon Wealth

On ‘precariously low’ oil stockpiles, China’s ammonia milestone, and a PFAS destroyer

Hundred dollar bills.
Heatmap Illustration | Unsplash

Current conditions: The wildfires in France and Europe are slowing, but three firefighters have died and the looming heat wave could bring yet more disaster • New York and New Jersey are facing flash floods as a storm system makes its way across the Northeast United States • Days of thunderstorms are causing floods across Vientiane, Laos’ sprawling capital.

THE TOP FIVE

1. Commonwealth Fusion Systems raises another $1 billion

Last month, I toured Commonwealth Fusion Systems’ headquarters in small-town central Massachusetts. The place was abuzz in activity. On the factory floor side, workers were assembling the magnets needed to ultimately form the torus-shaped reactor — think a giant doughnut with an interior that curves like the core of an apple — called the tokamak. On the actual reactor side, SPARC — the prototype that CFS expects will make history next year as the first private enterprise and only tokamak to ever generate more energy that it took to start the fusion reaction — was starting to look like a functional machine from my view on a second-story walkway overlooking the sterile assembly room. The old joke that fusion is the energy source of tomorrow — and always will be — certainly didn’t ring as funny now. I’ll tell you who isn’t laughing: All the new investors that just poured another $1 billion into CFS. The company announced its latest funding round early this morning, which brings the startup’s total fundraising since its launch as a spinout from the Massachusetts Institute of Technology in 2018 to $4 billion. CFS now accounts for 30% of all the private capital that has flowed into fusion. What distinguishes this round, my colleague Katie Brigham wrote, is that the money is coming from a bunch of institutional investors, such as pension funds and sovereign wealth funds, rather than venture capitalists. On a call with reporters this week, CFS’s newly-named chief financial officer, Lorence Kim, said it’s the first-time institutional investors comprised the majority of the new funding. When I asked the company’s spokeswoman for a percentage estimate breaking down the new versus old investors in this round, she declined to comment. Kim cautioned that the funding isn’t the kind of capital you raise before launching on a stock market. But his hire is notable. The former Goldman Sachs banker famously helped take the pharmaceutical giant Moderna public and held the top financial role through the start of the Covid-19 pandemic.

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Energy

Commonwealth Fusion Systems Wins Over New Class of Investors With $1 Billion Raise

Risk-averse but deep-pocked institutional investors join the party.

Commonwealth Fusion Systems Wins Over New Class of Investors With $1 Billion Raise

When the Fusion Industry Association surveyed the sector earlier this month, it found that the industry’s 56 active companies had collectively raised more than $14.2 billion over the past five years. But an ever-larger share of that money is ending up in the hands of one startup: Commonwealth Fusion Systems.

With its latest $1 billion funding round, announced today, the MIT spinout now accounts for nearly 30% of all capital in the industry. The new financing, led by a wave of institutional investors entering the sector for the first time, will support construction of the company’s first commercial power plant in Chesterfield County, Virginia, which CEO Bob Mumgaard says is on track to come online in the early 2030s.

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