You’ve reached your free article limit
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
On the long-time climate funder’s win-loss record, China’s clean energy manufacturing, and sunscreen.

Tom Steyer, the billionaire investor and climate activist, is probably not going to be California’s next governor.
While the Associated Press still hasn’t called the race (and votes are still being counted), outside observers such as Decision Desk HQ have projected the outcome. The likely winners of California’s top-two primary will be Xavier Becerra, a Democrat and former federal health secretary, and Steve Hilton, a British-born Republican and conservative commentator. They’ll face each other in the November election.
That means the country’s most ambitious state-level climate policy will probably wind up in Becerra’s hands. And Becerra, notably, has suggested he will look upon the state’s carbon-cutting goals more skeptically than California’s past two Democratic governors. He has committed neither to California’s goal of ending gas-powered vehicle sales by 2035, nor its goal of phasing out fossil fuels by 2045. And he has suggested the state has ignored affordability in its quest to cut carbon emissions.
“Can we make the 2045 goal? Sure would like to, but I’m not going to hang up our economy and families’ cost of living if we find that we’re not able to meet that goal,” he said in an interview earlier this year. His website lists “Energy and Utilities” but not climate change, as a top priority for his future administration, and adds for clarity: “Bill affordability will be at the center of my energy policy.”
All that will matter in the years to come. Yet the most significant immediate consequence — if Steyer does fail to make the run-off — might be for campaign finance. After Becerra (or an independent committee associated with him) accepted donations from Chevron and an oil and gas trade group, Steyer pounced. “Big Oil,” Steyer said, was betting on Becerra to dismantle California’s climate policy. Becerra retorted that he had sued oil companies as California’s attorney general. Then he kept Chevron’s money.
Subscribe to get Heatmap in your inbox daily.
That was just one episode in a long and complicated race, of course. But ultimately, it’s not clear that voters in one of the country’s most liberal polities cared about the donation or Becerra’s less ambitious approach to climate policy — or perhaps Steyer, a billionaire himself, was not the most persuasive critic of money’s corrosive influence in politics. Either way, Becerra’s successful primary campaign may signal a more conciliatory approach to fossil fuels from Democrats, even those from coastal, progressive states. (Heatmap, I hasten to add, doesn’t accept advertising or any other kind of sponsorship from oil and gas companies.)
What’s more cut and dried is that Steyer has donated an awe-inspiring amount of money to climate, environmental, and other progressive causes over the past 17 years, and now has little to show for it. It’s worth doing a brief tally: He spent $216 million on this run for governor, including more than $195 million on ads. He dropped another $342 million to run for president in 2020. Neither effort succeeded (assuming projections hold).
Then there’s the $90 million he spent on the Trump impeachment effort during the president’s first term, as well as the $58.5 million he gave to the NextGen Climate political action committee for the 2018 cycle. Steyer, in fact, helped found the NextGen Climate organization in 2013; he later gave it and a few other groups $74 million to turn out young voters on climate issues in the 2014 midterm, then donated at least another $25 million in 2016. His political spending from 2009 to 2017 came to $365.6 million, according to his own disclosures.
All in all, Steyer has spent roughly a billion dollars since 2009 to advance causes and issues that he cares about — as well as his own political career. Climate has been one of the biggest beneficiaries of this largesse.
And it hasn’t quite all been a wash. Steyer has seemingly had the most success doing what he knows best: for-profit investment. Galvanize, the climate-aware asset manager he co-founded in 2022 and co-chaired until last year, has closed at least $1 billion in funds, and raised $370 million as recently as March. And even as a political donor, Steyer has pulled off big wins when intervening in California’s referendum elections. He was the biggest donor to the “No on Prop 23” campaign in 2010, which successfully protected the state’s climate policy from a Koch brothers-funded effort to defang it. And he was the biggest single contributor to last year’s Prop 50 referendum, which allowed the state to join the Trump-initiated mid-decade redistricting war.
But it isn’t exactly an inspiring record. I would say Steyer is the New York Knicks of political giving, except the Knicks are good now. While Steyer’s money paid the rent for many climate activists, organizers, and wonks over the years — and played some role in creating the political moment that produced the Inflation Reduction Act — it hasn’t created the kind of durable majority for climate action that he may have once hoped. Perhaps that should invite some introspection: Has the effort to produce a pro-climate-action consensus failed despite its billionaire backers? Or because of them?
What has long perplexed me about Steyer is that even though he has spent much of his time as a candidate embracing the left — and allying himself with the Democratic Party’s various interest groups — he strikes a far more moderate tone in conversation. As he told me during a Heatmap event at last year’s San Francisco Climate Week, “No one’s going to adopt new technologies to be nice. They’re going to adopt new technologies because they’re better, because they’re a better deal, because they’re cheaper, or in some ways solve a pain point for the customer.” In that sense, at least, he believed the market could work. Whether a similar market exists for political donors is perhaps best left unanswered.
The Iran war — and the energy crisis it ignited — have been a gift to China’s clean energy manufacturing sector.
But they have also helped America’s oil and gas industry. A new round of government statistics, released today, show that America’s crude oil, petroleum product, and fuel oil exports surged by more than $8.7 billion in April. That helped push down the government’s volatile trade deficit to its lowest level in months. The Trump administration has sought to lower the trade deficit since taking office.
Incidentally, a tracker from researchers at Brown University estimates that Americans have paid an extra $56 billion for gasoline and diesel since the Iran war began.
It’s not exactly climate adaptation, but I’ll take it: The U.S. Food and Drug Administration has amended the list of ingredients allowed in American sunscreen for the first time in 20 years, permitting the use of a stable and broad-spectrum chemical long permitted in European and Asian sunscreens.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
The Iran war has been a gift to the country’s vehicle, solar, and battery business.
This is Heatmap Daily, a weekday evening digest written by our executive editor.
Happy Monday and welcome back. For months now, we’ve been talking about how the U.S. and Israel’s war in Iran has been a boon for electric vehicles, clean energy, and (unfortunately) coal.
But today we got data that confirms: This clean energy export boom is not just a side story. It is one of the brighter spots in the overall Chinese economy, which remains the world’s second largest.
According to economic data released on Monday, China grew 4.5% during the summer quarter as compared to the quarter from a year earlier. That means the country will likely hit its growth target this year, albeit on the low end.
The country’s economic expansion wasn’t driven by domestic consumption, however. Consumer confidence remains low, and residential investment has yet to return after the property crash earlier this decade.
Instead, booming exports are now driving China’s economy. Exports were more than 36% higher in September than a year earlier, driven by chips, ships, electric vehicles, and solar panels and batteries. The country will likely record its biggest trade surplus ever this year.
Some of those categories are clearly flourishing thanks to the global AI boom — think chips and even batteries. But the preponderance of vehicle exports suggests surging oil prices aren’t hurting. Sales of ‘new energy vehicles,’ a category that includes 100% electric vehicles and plug-in hybrids, were up more than 13% on a year-over-year basis in September, according to the Chinese car manufacturer’s trade group. But exports of these vehicles are booming. Battery electric vehicles were up 130% last month compared to the same period in 2025, and plug-in hybrid exports were up more than 200%.
It’s interesting to consider how much the Chinese and U.S. economy are mirroring each other at this moment. Americans are dealing with a remarkable investment boom, which is buoying the labor market and stubbornly maintaining high inflationary pressure. China is struggling with deflation, and exports are its quickest path to growth. (Consumer sentiment in both countries, interestingly, seems to be in the doldrums, even though American consumers appear to be in much better shape.)
When thinking about what artificial intelligence could do for the United States over the next decade, some subject-matter prognosticators (and even some Anthropic employees) imagine a world of 4%, 5%, or even 7% GDP growth. Such a growth rate is difficult even to envision in the modern era, of course, and it seems like it could propel the U.S. economy to staggering prosperity.
I know better than to make a prediction about where we’re headed. But amateur economic commentators should keep China in mind, too: a country that dominates along many technological axes, but where the standard economic math of supply, demand, and consumer sentiment still holds. Except if the United States economy were to stumble, no exterior source of demand will come to our rescue.
Endurance Energy hoped its generator would run for a full year, but the team isn’t afraid of the “error” in “trial and error.”
About 300 miles off the Oregon coast, a mile beneath the ocean’s surface, a startup just drilled the world’s first subsea geothermal well. And for a grand total of exactly 8.7 seconds, its prototype power plant generated about 2 kilowatts of net power. It wasn’t quite the result the Seattle-based Endurance Energy was hoping for — the company’s goal was to run its 100-kilowatt generator for a full year. But it’s not nothing.
“We really proved with this mission that a geothermal well could be drilled and completed on the seafloor, and doing that within 21 months of the company existing I think is really a testament to our pace of progress,” Endurance CEO Andrew Redd told me.
A former SpaceX engineer — as so many climate tech founders seem to be — Redd appears quite comfortable with the rapid trial-and-error cycles that hard tech startups often demand. Or as he stated in the company’s press release, which provides a refreshingly frank account of what this first test did and didn’t accomplish, “We follow the adage ‘make it exist, then make it good.’”
Investors seem to be buying it. In June, the startup raised a $54 million Series A, led by Peter Thiel’s Founders Fund — Endurance’s second funding round in less than two years of existence. Still, the team certainly has their work cut out for them. The ocean is a notoriously difficult operating environment: Saltwater is corrosive and offshore infrastructure is difficult and expensive to build, maintain, and repair.
Indeed, Endurance spent the first 11 days of its three-week stint at sea debugging its drill, which the team had never operated underwater before. But with a vessel chartered and a locked-in deployment date, the company couldn’t afford to wait for everything to work out perfectly. “We were still working on that generator hours before it got on the seafloor,” Redd told me. He’s used to that sort of thing, though, comparing it to making final tweaks to rockets already sitting on the launchpad. “That’s kind of the name of the game,” he said.
The trial took place at Axial Seamount, an active underwater volcano and the only place in the world with a cluster of hydrothermal vents connected to shore by fiber optic cable, which allows the Endurance team to monitor and control its system in real time from Seattle. While this was the company’s fifth deep-sea mission, it was the team’s first attempt to actually drill their own well.
After lowering their drill about a mile below the surface, the team bored two holes and turned the second into a well about 2 inches wide, lining it with pipe and sealing it with cement. But after losing so much time to debugging, the team only managed to drill about 52 feet deep — far short of its original 200-foot target.
Water then flowed up the well at about 260 degrees Celsius (around 500 degrees Fahrenheit), but the narrow borehole proved too restrictive to deliver enough heat for the generator to operate. So the team pivoted, connecting the generator directly to a naturally flowing, hotter hydrothermal vent instead. The generator then ran for a total of 29 seconds, producing about 2 kilowatts of net power for 8.7 seconds. That represents the total electricity the turbine generated, minus the 7 to 8 kilowatts needed to run its supporting components, such as the refrigerant pump and other onboard equipment.
Then a software glitch triggered the onboard battery safety system, which shut down the plant. When the team tried to restart the system, the power cable feeding the refrigerant pump failed, leaving the pump unable to restart. That was the end of the road. The mission wrapped up after three weeks at sea, a far shorter run than the team had hoped.
“The success criteria would be if we had left with the generator still on the seafloor; that would have been an example of sustained net power, and we didn’t get there,” Redd told me. Instead, the team brought the system back to Endurance’s Seattle headquarters, where it’s fixing the software as well as refurbishing and upgrading the hardware — which includes changing how it builds and tests subsea cables — to prepare for another mission sometime this winter. This time, the goal will be to generate sustained power from a much deeper well.
The team will need to demonstrate progress soon to keep its next major milestone on track: a planned 2-megawatt deployment off the coast of Tonga by the end of 2027. The project aims to supply electricity directly to the Tongan grid, which today is heavily dependent on expensive, imported diesel. Redd expects subsea geothermal to be cost-competitive with that fuel in this first pilot.
Getting there, however, is a formidable engineering challenge. While it’s long been a subject of academic curiosity, no one prior to Endurance had ever drilled an offshore geothermal well before, meaning the team can’t simply transplant existing land-based technology to the seafloor. “Every component that you would use terrestrially now needs to be either modified or built completely from scratch,” Redd explained. “And so you multiply that across every component required to make these kinds of infrastructure projects happen, and it’s a lot of work.”
No kidding. But if Endurance can pull it off, Redd sees this resource as “the perfect energy source for the future.” A conference paper presented by the geoscience company Viridien last year estimates that offshore geothermal resources worldwide could yield about 6 terawatts of recoverable electric power — nearly twice the world’s current continuous electricity output.
“We can access terawatts of power. There’s no fuel. We can site next to extremely large cities around the Pacific. We have no surface presence,” Redd said, ticking off the advantages. Plus, the three necessary ingredients for a high-quality geothermal well — permeable rock, high heat, and water — are widely accessible offshore, he added. Eventually, he expects subsea geothermal to undercut natural gas in Endurance’s target markets: electricity grids, industrial facilities, and data centers across the Pacific Islands, the U.S. West Coast, and Northeast Asia, all of which sit along the undersea volcanic zone known as the “Ring of Fire.”
The way Redd sees it, advances in subsea technology pioneered by the offshore wind, oil, and gas industries have cleared much of the technological path to making underwater geothermal a viable clean energy resource. In his view, what’s been missing is simply the ambition to chase the opportunity in the private market. SpaceX, he said, really proved what’s possible for a scrappy startup to achieve.
“It is quite new at industrial scale for a small company with a bunch of fairly young people to go after something like this,” he told me. “Before SpaceX went to launch a rocket as a private company, no one thought you could get to orbit as a private company. And so that has really seeded this ambition.”
On Greenland’s deepsea mining ban, Indonesia floating nuclear, and a solar boom
Current conditions: Hurricane Trudy has weakened from its peak as a Category 2 storm but still threatens up to 8 inches of rain as it swirls off Baja California • A nor’easter is howling through the Mid-Atlantic this week, hammering the coast with winds of up to 70 miles per hour • A humid overcast has settled over Paris this week as French authorities struggle to regain control after protests over living costs gave way to anarchic riots.
At least 47 major data center projects have been delayed, withdrawn, or blocked so far this year, according to data the regulatory intelligence service RegLayer shared with the Financial Times — and that may be a “conservative estimate.” Just 35% of planned data centers are “credible,” analysts told the newspaper, as more than 1,000 communities across the United States now have restrictions on artificial intelligence infrastructure. The data comes as investors look increasingly jittery about AI following ChatGPT-maker OpenAI’s missing a key revenue metric this year.
Those findings stand in contrast with the numbers from our data service, Heatmap Pro. Based on our research, at least 107 projects faced cancellation so far this year, putting 2026 on track to beat last year, which saw 108 proposals nixed.
Unless you’re living off the grid and away from any social media (if so, I’m jealous), then you can probably surmise that not-in-my-backyard opposition prevails in many such cases against proposed data centers. That makes selling would-be neighbors on the projects critical. New polling by the advocacy group GoodPower found that a binding promise to protect local electricity rates boosts support for the projects upward by as much as 14 points. Such a pledge worked primarily on the 78% of voters who distrust data centers. Another potential winner: Pair a data center with renewables. At least 46% of respondents to the poll said their support would increase if a project were powered by renewables. The survey spoke to 2,610 registered voters last month and oversampled in states with at least 200 data centers completed: Arizona, Georgia, Indiana, Pennsylvania, Texas, and Virginia.
Greenland wants to find ways to exploit its mineral riches in hopes of generating enough income from industries other than fishing and tourism to eventually wean off subsidies from the governments of Denmark and the European Union. Earlier this month, as you may recall, the self-governing Danish island gave a project the green light. But the government in Nuuk doesn’t want miners harvesting metals from the seabed surrounding the Arctic island, which are fertile fishing grounds and could, in theory, lead to mineral production without meaningful infrastructure to create jobs for Greenlandic people. Last week, the Greenlandic Parliament adopted a resolution requiring the government to draft legislation banning deep-sea mining. All members present voted to approve the proposal, according to Sermitsiaq, a leading newspaper in Nuuk. The ban would, if adopted, last until the end of 2029, with the possibility of an extension for two years at a time.
Sign up to receive Heatmap AM in your inbox every morning:
Long before the race for small modular reactors kicked off, Russia launched a floating nuclear power station and sailed the vessel up to the Arctic to power a small town. Now, as you may recall, the state-owned Russian nuclear company Rosatom is making plans to build more floating nuclear plants, and it has a major nuclear newcomer nation as an offtaker. Last week, NucNet reported, Rosatom announced a deal with Indonesia’s state-owned PT Pembangkit Listrik Nuklir to supply electricity to northern Indonesia from at least two floating nuclear plants with a capacity of 200 megawatts each.

Over the past decade, small-scale and rooftop solar systems increased from 18,812 gigawatt-hours to 92,979 gigawatt-hours, an increase of over 394%. That’s according to a new analysis from the Energy Information Administration, which found that California, Arizona, Texas, Florida are the regions with the most abundant solar resources. Even though the state has worse solar resources in general, New York ranked fifth as a result of growing capacity. Still, the rate of growth in generation has slowed over the past three years. l
The Trump administration is pulling out all the stops for Alaskans who want to drill and transport fossil fuels, mine minerals, and log trees. Now he’s easing rules on hunters. A new final rule from the National Park Service has revived a hunting method the Biden administration banned in 2024: Baiting bears with doughnuts soaked in bacon grease. Hunters use the baits to lure bears to close range before shooting them. “Some hunters prefer to use strong-smelling, high-calorie foods like pastries, doughnuts, meat scraps or fish remains to lure bears from miles away,” The New York Times reported. “But some conservationists say the practice is unethical and risks making the bears accustomed to human food, which could endanger people.”