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On global emissions, Bill Gates on Chinese nuclear, and a geothermal breakthrough

Current conditions: Hurricane Melissa made landfall over Jamaica as one of the strongest Category 5 storms on record before barreling north toward Cuba • A cold front will send temperatures plunging as far as 15 degrees below average across the mid-Atlantic and the Northeast • The Colombian Andes are bracing for flooding amid up to 8 inches of rain forecast for Wednesday.

The Trump administration’s all-of-government approach to thwarting construction of offshore wind turbines has included the Department of the Interior de-designating federal waters to turbine development and the Department of Transportation yanking funding, in addition to various steps taken by other agencies. Now the Department of Health and Human Services is taking its swing at the industry. On Tuesday, Bloomberg reported that Secretary of Health and Human Services Robert F. Kennedy, Jr. directed the Centers for Disease Control and Prevention to open an investigation into the potential harms offshore wind farms pose. In late summer, the agency instructed the CDC’s National Institute for Occupational Safety and Health to prepare research about wind farms’ impact on fishing businesses. The effort included Kennedy personally meeting with NIOSH director Josh Howard, in the course of which he gave Howard — a career physician and lawyer who previously oversaw federal efforts on September 11 victims’ health — specific experts to contact, according to the newswire report. The U.S. Surgeon General’s office has also been involved in the initiative.
It’s part of what Heatmap’s Jael Holzman called “Trump’s total war on wind,” an assault that started on President Donald Trump’s first day back in office. Earlier this month, oil major Shell’s top executive in the United States warned that the precedents the administration was setting risked being weaponized against fossil fuel companies once Trump exited power.
In the first real decline ever forecast by the United Nations, global emissions are now expected to fall by 10% below 1990 levels by 2035, according to a report issued Tuesday. But the world remains far off from the 60% reduction goal scientists say is necessary to keep warming below 1.5 degrees Celsius, the target leaders committed to when they signed the Paris Agreement a decade ago. “Humanity is now clearly bending the emissions curve downwards for the first time, although still not nearly fast enough,” Simon Stiell, executive secretary at the UN Framework Convention on Climate Change, told Bloomberg on Tuesday. “We have a serious need for more speed.”
The latest assessment comes as the U.S. is withdrawing from the Paris climate negotiations and other countries are paring back spending on decarbonization ahead of the UN climate talks in Belem, Brazil, next month.
On Tuesday, Bill Gates released a provocative new treatise on climate change in which he laid out what he sees as necessary ahead of November’s climate summit. Before that, on Friday afternoon, the billionaire philanthropist gathered with half a dozen journalists in a conference room in Manhattan to discuss his latest ideas over lunch. Heatmap’s Robinson Meyer, who was in attendance, has a good breakdown of some of what Gates discussed. I also attended the lunch and wanted to highlight another point Gates made: The West is losing the race for new nuclear power. When it comes to fission, China is building more reactors than anyone else, and helped perfect the Westinghouse AP1000 before its successful construction in the U.S. Gates’ own reactor developer, TerraPower, had plans to build its debut plant in China prior to the souring in relations between Washington and Beijing nearly a decade ago. When it comes to fusion, he said, there’s no topping how much funding China has directed toward the technology.
“The amount of money they’re putting into fusion is more than the rest of the world put together, times two,” Gates told us. “There is a substantial amount of Chinese capital going into that, and in fission, they built the most reactors.”
Chemical giant Honeywell has announced a new technology that converts agricultural and forestry waste into ready-to-use renewable fuels that can directly replace the carbon-intensive fuel used by large ships and airplanes. The so-called “Biocrude Upgrading” processing hardware can be provided in modular form and equipped to ships at a moment when global regulators are seeking to slash the roughly 3% of planet-heating emissions that come from cargo vessels. “The maritime industry has a real need for renewable fuels that are immediately available and cost effective,” Ken West, Honeywell’s energy and sustainability solutions president, said in a statement. The news comes nearly two weeks after Trump “torpedoed” — as Heatmap’s Katie Brigham put it — efforts at the International Maritime Organization to slash emissions from regulated ships.
The geothermal startup Eavor said Tuesday that its breakthroughs in drilling had slashed the time it takes to drill its wells underground. The Canadian company said that the results of two years of drilling at its flagship project in Geretsried, Germany, showed its efforts to dig to hotter and deeper locations are working. “Much like wind and solar have come down the cost curve, much like unconventional shale [oil and gas] have come down the cost curve, we now have a technical proof-point that we’ve done that in Europe,” Jeanine Vany, a cofounder and executive vice president of corporate affairs at Eavor, told Canary Media’s Maria Gallucci.
The breakup of the ancient supercontinent 1.5 billion years ago transformed the Earth’s surface environments and laid the groundwork for the emergence of complex life. That’s according to new research by Australian scientists at the University of Sydney and the University of Adelaide. The findings challenge what has long been called the “boring billion,” a time when biological and geological changes effectively stalled. The plate tectonics that reshaped the planet triggered conditions that supported oxygen-rich oceans and fostered the appearance of the first eukaryotes, the ancestors of all complex life. “Our work reveals that deep Earth processes, specifically the breakup of the ancient supercontinent Nuna, set off a chain of events that reduced volcanic carbon dioxide emissions and expanded the shallow marine habitats where early eukaryotes evolved,” Dietmar Müller, a University of Sydney professor and the study’s lead author, said in a press release.
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On ravenous data centers, treasured aluminum trash, and the drilling slump
Current conditions: The West Coast’s parade of storms continues with downpours along the California shoreline, threatening mudslides • Up to 10 inches of rain is headed for the Ozarks • Temperatures climbed beyond 50 degrees Fahrenheit in Greenland this week before beginning a downward slide.
The Department of Energy’s Loan Programs Office just announced a $1 billion loan to finance Microsoft’s restart of the functional Unit 1 reactor at the Three Mile Island nuclear plant. The funding will go to Constellation, the station’s owner, and cover the majority of the estimated $1.6 billion restart cost. If successful, it’ll likely be the nation’s second-ever reactor restart, assuming Holtec International’s revival of the Palisades nuclear plant goes as planned in the next few months. While the Trump administration has rebranded several loans brokered under its predecessor, this marks the first completely new deal sanctioned by the Trump-era LPO, a sign of Energy Secretary Chris Wright’s recent pledge to focus funding on nuclear projects. It’s also the first-ever LPO loan to reach conditional commitment and financial close on the same day.
“Constellation’s restart of a nuclear power plant in Pennsylvania will provide affordable, reliable, and secure energy to Americans across the Mid-Atlantic region,” Wright said in a statement. “It will also help ensure America has the energy it needs to grow its domestic manufacturing base and win the AI race.” Constellation’s stock soared in after-hours trading in response to the news. Holtec’s historic first restart in Michigan got the green light from regulators to come back online in July, as I reported in this newsletter at the time. But already another company is lining up to turn its defunct reactor back on: As I reported here in August, utility giant NextEra wants to revive its Duane Arnold nuclear station in Iowa. The push to restart older reactors reflects a growing need for electricity long before new reactors can come online. Meanwhile, next-generation reactors are plowing ahead. The nuclear startup Valar Atomics claimed this week to achieve criticality long before the July 4 deadline set in an Energy Department competition.
Over the next five years, American demand for electricity is set to grow by the equivalent of 15 times the peak demand of the entirety of New York City. That’s according to the latest annual forecast from the consultancy Grid Strategies. The growth — roughly sixfold what was forecast in 2022 — comes overwhelmingly from data centers, as shown by which regions expect the largest growth:

“The fact that these facilities are city-sized is a huge deal,” John Wilson, Grid Strategies’ vice president and the report’s lead author, told Canary Media. “That has huge implications if these facilities get canceled, or they get built and don’t have long service lives.” Mounting political opposition to data centers could make deals less certain. A Heatmap Pro survey in September found just 44% of Americans would welcome a data center opening nearby. And last week I wrote about how progressives in Congress are rallying around a crackdown on data centers.
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The contrast couldn’t be starker. In Washington, President Donald Trump rolled out the red carpet for Saudi Crown Prince Mohammed bin Salman, offering an opulent welcome to the White House and lashing out at reporters who asked about September 11 or the killing of journalist Jamal Khashoggi. In Belém, Brazil, meanwhile, former Vice President Al Gore tore into the team of delegates Saudi Arabia sent to the United Nations climate summit for “flexing its muscles” in negotiations about how to shift away from oil and gas. “Saudi Arabia appears to be determined to veto the effort to solve the climate crisis, only to protect their lavish income from selling the fossil fuels that are the principal cause of the climate crisis,” Gore told the Financial Times. “I hope that the rest of the world will stand up to this obscene greed and recklessness on the part of the kingdom.”
But the Trump meeting could yield some progress on clean energy. Among the top issues the White House listed in its read-out of the summit was the push to export American atomic energy technology to Saudi Arabia as the country looks to follow the United Arab Emirates in embracing nuclear power.
Facing growing needs for domestic sources of metal for the energy transition, the European Union is seeing its trash as treasure. On Tuesday, the European Commission proposed restricting exports of aluminum scrap amid what The Wall Street Journal called “concerns that rising outflows of the resource could leave Europe short of a critical input for its decarbonization efforts.” Speaking at the European Aluminum Summit, EU trade chief Maros Sefcovic referred to the exports as “leakage.” The proposal wouldn’t fully block sales of aluminum scrap overseas, but would adopt a “balanced” measure that ensures sufficient supplies and competitive prices in the single market. “Scrap is a strategic commodity given its important contribution to circularity and decarbonization, as production from secondary materials releases less emissions and is less energy intensive, as well as to our strategic autonomy,” Sefcovic said. The measure is set to be adopted by spring 2026.
In the U.S., the Biden administration made what Heatmap’s Matthew Zeitlin last year called a “big bet” on aluminum. The Trump administration slapped steep new tariffs on imported aluminum, though as our colleague Katie Brigham wrote, “aluminum producers rely on imports of these same materials to build their own plants. Tariffs on these vital construction materials — plus exorbitant levies on all goods from China — will make building new production facilities significantly costlier.”

The average number of active rigs per month that are drilling for oil and natural gas in the continental United States fell steadily over the past year. As of last month, the U.S. had 517 rigs in operation, down from a peak of 750 in the end of 2022. The number of oil-pumping rigs dropped 33% to 397 rigs, while gas-pumping rigs slid 23% to 120 rigs over the same period from December 2022 to October 2025. While the Energy Information Administration said the declining rig count “reflects operators’ responses to declining crude oil and natural gas prices,” the federal research agency said it’s also “improvement in drilling efficiencies,” meaning companies are getting more fuel out of existing wells.
It’s been a pattern in recent research on sustainability. Scientists look at methods that Indigenous groups have maintained as traditions only to find that approaches that have sustained throughout centuries or millennia are finding new value now. A study by the University of Hawaiʻi at Mānoa’s Hawaiʻi Institute of Marine Biology found that Native Hawaiian aquaculture systems — essentially fish ponds known as loko iʻa — effectively shielded fish populations from the negative impacts of climate change, demonstrating resilience and bolstering local food security. “Our study is one of the first in academic literature to compare the temperatures between loko iʻa and the surrounding bay and how these temperature differences may be reflected in potential fish productivity,” lead author Annie Innes-Gold, a recent PhD graduate from the university, said in a press release. “We found that although rising water temperature may lead to declines in fish populations, loko iʻa fish populations were more resilient.”
Rob and Jesse talk data center finance with the Center for Public Enterprise’s Advait Arun.
The boom in artificial intelligence has become entangled with the clean energy industry over the past 18 months. Tech companies are willing to pay a lot for electricity — especially reliable zero-carbon electricity — and utilities and energy companies have been scrambling to keep up.
But is that boom more like a bubble? And if so, what does that mean for the long-term viability of AI companies and data center developers, and for the long-term health of decarbonization?
On this week’s Shift Key, we’re talking to Advait Arun, a senior associate for capital markets at the Center for Public Enterprise, about his new report on the market dynamics at play in the data center buildout. What kind of bets are these AI companies making? How likely are they to pay off? And if they don’t, who stands to lose big? Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
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Here is an excerpt from our conversation:
Robinson Meyer: Advait, you’ve done a — we’ve done a great job of kind of dancing around maybe the biggest question of the report — and I would say you do a very good job of playing coy about it in the report, where the report’s titled “Bubble or Nothing.” You actually don’t come out and say whether you think this is a bubble or not.
And of course, it’s kind of a weird bubble, too, because there hasn’t been a moment where these leaps in equity valuations for the hyperscalers has happened where people haven’t been like, Boy, it looks kind of bubbly. And if you remember back to the 20-teens too, people were worried about a tech bubble then, too. And it turned out that it wasn’t a tech bubble, it was just a rapidly growing and healthy part of the economy. And so what I wanted to ask you, Advait, was, number one, did you walk away from this and from your conversations with investors and creditors, policymakers, thinking it was a bubble? And number two, is this unusual that we have a bubble and we can’t stop talking about how bubbly it looks? Or is this a new type of bubble where there’s a bubble happening and we all know it’s a bubble?
Advait Arun: Ooh. I will not personally say whether or not I think this is a bubble. I do think, though, that the fact that so much of our attention is centralized around it, it testifies to a new way of the real media’s relationship with the economy — and not even the media just in general, but the fact that the federal government is interested in this being the next industry of the future. The fact that I think we haven’t had too much else to talk about in economic news due to the dominance of the hyperscalers and Mag Seven in the market, the fact that they’re the collateral for improvements in the energy system, and even some people are blaming them for the affordability crisis. I think it’s very easy to get into a headspace where we’re all paying rapt attention to the day-to-day stock movements of these companies. I don’t know what it was like, necessarily, to be following the news and the dot-com bubble, but I do certainly think that the amount that we’ve all been talking about it at the same time is very striking to me.
I think it’s important, as well, to recognize that bubbles have psychological motivations, more so than just pure economic motivations. Of course, from the perspective of a policymaker and someone who’s done credit analysis for stuff, I obviously look at these firms and look at their lack of revenue and think, This is dangerous. This could be getting over their skis. But a lot of companies have gone through this point and made it out. That’s not to say that these companies will or won’t, but the fact that so much of the market moves in response to the leading tech companies, there’s a degree of asset centrality and crowding, and extremely high relative values relative to historical values. It makes me think that there’s something to watch out for, anchored by the fact that a lot of the people leading this investment boom, whether it’s the federal government seeking to promote it or whether it’s the leaders of these companies, the CEOs envisioning some kind of vastly different future for the economy. There’s a psychology to it — I think Keynes would call it ‘animal spirits’ — that’s pushing this investment boom the way that it’s going.
Mentioned:
Advait’s report: Bubble or Nothing: Data Center Project Finance
Previously on Shift Key: A Skeptic’s Take on AI and Energy Growth
Jesse’s upshift; Rob’s downshift.
This episode of Shift Key is sponsored by …
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Music for Shift Key is by Adam Kromelow.
The transition to clean energy will be expensive today, even if it’ll be cheaper in the long run.
Democrats have embraced a new theory of how to win: run on affordability and cost-of-living concerns while hammering Donald Trump for failing to bring down inflation.
There’s only one problem: their own climate policies.
In state after state, governors and lawmakers are considering pulling back from their climate commitments — or have already reneged on them outright — out of a concern for the high costs that they could soon impose on voters. Democrats have justified the retreat by citing a new regime of sharper inflation, reduced federal support, and a need to deliver cheap energy of all kinds.
“We need to govern in reality,” New York Governor Kathy Hochul, for instance, said in a recent statement defending her approval of new natural gas infrastructure. “We are facing war against clean energy from Washington Republicans.”
Leaders in Pennsylvania, Massachusetts, New Jersey, and California have all sounded similar notes while making or considering changes to their own states’ policies.
“The trend toward a different approach to energy policy that puts costs and pragmatism first is very real,” Josh Freed, the senior vice president for climate and energy programs at Third Way, a center-left think tank, told me.
“Affordability is the entry ticket for any other policy goal that politicians have,” he continued. “It particularly makes sense on climate and clean energy because we’ve all been talking for years about the need to electrify. If electricity is expensive, then electrification is simply not going to happen.”
The challenge is an old one for climate policy. Climate change — fueled by fossil fuel pollution — will ultimately raise costs through heat waves, extreme weather impacts, and a depleted natural world. But voters don’t go to the polls for lower costs in 2075. They want a cheaper cost of living now.
Democrats have more tools in this fight than ever before, with wind, solar, and batteries often much cheaper than other forms of generation. But to fully realize those cost savings — and to decarbonize the grid faster than utilities or power markets would otherwise go — politicians must push for politically or financially costly policies that speed up the transition, sometimes putting long-term climate goals ahead of near-term affordability concerns.
“We’ve been talking about affordability as the entry point and not the end of the story. It’s important to meet consumers and voters and elected officials where they are,” Justin Balik, the vice president for state policy at Evergreen Action, a climate-focused think tank and advocacy group, told me.
“We can make the argument — because the data is on our side — that clean energy is still cheaper and is a big part of lowering costs.”
Part of what’s driving this shift among Democrats on climate policy is economics. The Trump administration’s war on clean energy has made it more difficult to build clean energy than some state-level policies once envisioned. Many emissions reduction targets passed during the late 2010s or early 2020s — like New York’s, which requires the state to reduce emissions 40% from 1990 levels by 2030 and 85% by 2050 — assumed much faster clean electricity buildouts than have happened in practice. The president’s One Big Beautiful Bill Act will end wind and solar tax credits next year, driving up project costs in some cases by 40% more than once projected.
The president’s war on wind power, in particular, has hit particularly hard in Northeastern states, where grid managers once counted on thousands of megawatts of new offshore wind farms to supply power in the afternoon and evenings while meeting the states’ climate goals. The Trump administration has succeeded in cancelling virtually all of the Northeast’s offshore wind projects outside New York.
But economics do not explain all of the shifts. Democrats seem to believe the president’s war on clean energy has created a fresh rhetorical opening for them: They can now cast themselves as champions of cheap energy in all forms. Some have even revived the old Obama-era “all of the above” slogan for this new era.
“We have an energy crisis. Electricity prices for homeowners and businesses have gone up over 20% in New Jersey. The only answer is all of the above,” Representative Frank Pallone, the ranking member of the House energy committee, told Politico in September.
Even politicians who once championed climate change have downplayed it in recent speeches. New York Mayor-elect Zohran Mamdani, who once described himself as a “proud ecosocialist,” barely mentioned climate change during his general election campaign for mayor.
Hochul’s recent moves illustrate the shift. Over the past year, she has delayed implementing New York’s cap-and-invest law, which seeks to reduce statewide carbon emissions 40% by 2030. She also paused the state’s ban on gas stoves and furnaces in new homes and low-rise buildings, which is due to go into effect next year. (A state court has ordered her to implement the cap-and-invest law by February.)
This month, Hochul approved two new natural gas pipelines as part of a rumored deal with the Trump administration to salvage New York’s wind farms. She defended the decision by appealing to — you guessed it — affordability.
“We have adopted an all-of-the-above approach that includes a continued commitment to renewables and nuclear power to ensure grid reliability and affordability,” she said in a statement.
New York’s neighbors have gone down similar paths. In Pennsylvania, Governor Josh Shapiro struck a budget compromise with Republican lawmakers that will remove the state from the Regional Greenhouse Gas Initiative, or RGGI, a compact of Northeastern states to cap carbon pollution from power plants and invest the resulting revenue.
Shapiro blamed Republicans, who he said have “used RGGI as an excuse to stall substantive conversations about energy,” but said he was focused on — yes, again— “cutting costs.”
“I’m going to be aggressive about pushing for policies that create more jobs in the energy sector, bring more clean energy onto the grid, and reduce the cost of energy for Pennsylvanians,” he said before signing the budget deal.
California has also reworked its own climate policy in response to cost-of-living concerns. Earlier this year, it passed an energy package that re-upped its cap-and-trade program while allowing new oil extraction in south-central Kern County. The legislation was partly driven by a fear that local refineries would shutter — and gas prices could soar — without more crude production.
Massachusetts could soon join the pullback. Earlier this month, the state’s House of Representatives fast-tracked a bill that included a provision nullifying a legal mandate to cut carbon emissions in half by 2030, as compared to 1990 levels.
While the bill preserved the state’s longer-term goal to cut emissions by 80% by 2050, it rendered the 2030 mandate “advisory in nature and unenforceable.”
“The number one goal is to save money and adjust to the reality with clean energy,” Representative Mark Cusack, co-chair of the energy and utilities committee and the bill’s sponsor, told the local Commonwealth Beacon. He said the Trump administration’s “assault” on clean energy made the pullback necessary. “We want to get there, but if we’re going to miss our mandates and it’s not the fault of ours, it’s incumbent on us not to get sued and not have the ratepayers be on the hook,” he said.
Cusack’s bill also included measures to transform the state’s Mass Save program — which helps households and businesses to switch to electrified heating and appliances — by dropping the program’s climate mandate and its ban on buying efficient natural gas appliances.
On Monday, lawmakers removed the mandate provision from the bill but preserved its other reforms. While the bill is no longer fast tracked, they could choose to revisit the legislation as soon as next year.
New Jersey may also revisit its own climate commitments. Governor-elect Mikie Sherrill swept to victory this month in part by promising to freeze state utility rates. She could do that in part by lifting or suspending certain “social benefit charges” now placed on state power bills.
In the long term, though, Sherrill will have to pursue other policies to lower rates. Researchers at Evergreen Action and the National Resources Defense Council have argued that changing the state’s electricity policies could lower carbon emissions while saving ratepayers more than $400 a year by 2030.
Balik described the proposal as a “three-legged stool” of immediate rate relief, medium-term clean energy deployment, and long-term utility business model reform. He also mourned that other states have not used revenue from their climate programs to pay for climate programs.
“There’s a danger of looking at cost concerns a little myopically,” he said. “Cap and invest [in New York] was paused for the stated reason that it’s not helpful with cost, but you could use cap-and-invest revenues to pay for things on the rate base now.”