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Whether they can continue to do so depends on how long the green freeze lasts.

This story is part of a Heatmap series on the “green freeze” under Trump.
By now I’ve come to expect the responses. “We’re continuing to assess the situation and aren’t able to speak on it at this time.” “We are not able to provide comment on this matter.” Oftentimes, all I’ll receive is a Gmail prompt to an unanswered email: Sent 9 days ago. Follow up?
This week, my colleagues and I are covering the “green freeze,” an economy-wide trend of canceled clean energy projects, a retreat from climate tech investments, and a tightening of purse strings perhaps best epitomized by Breakthrough Energy’s pullback from grantmaking and policy advocacy. I aimed to look more closely at how nonprofits are navigating the new political and economic landscape — with climate no longer a key policy focus of the White House, would related causes lose their appeal to donors? Or would the opposite be true: Given the federal funding gap, would philanthropy surge to fill the vacuum? Would it even be prudent to do so?
“In my experience, when the government takes a step back from a particular impact area — and climate is no different — often philanthropists end up leaning in,” Amy Duffuor, a co-founder and partner at Azolla Ventures, told me. Azolla invests in climate tech start-ups using both traditional venture capital and catalytic capital, the latter of which comes primarily from philanthropists. But for many organizations, especially at the grassroots level or in the environmental justice space, it might not be that simple.
Talking about donors is always delicate and awkward, but I was still surprised by how closed-lipped local and national nonprofits became when I started asking these questions. Many groups that have spoken candidly with Heatmap News in the past declined to talk to me on the topic, even on background. One media relations manager for a conservation organization that receives federal grants delicately implied, while turning down my request for comment, that no one wants to stick their neck out when there’s a climate witch-hunt going on.
“Nonprofits have to be really conscious of where their support comes from and how they protect that,” Cyrus Wadia, the CEO of Activate, a nonprofit that offers fellowship support for early-stage science entrepreneurs looking to launch climate start-ups, told me when I explained what I was seeing.
He’s right that the wariness is understandable. The Trump administration is attempting to claw back some $20 billion in funds awarded to climate nonprofits under President Joe Biden, including hundreds of grants from the Environmental Protection Agency, many of which were earmarked for local environmental justice nonprofits. A number of these nonprofits are, as a result, facing unexpected funding shortfalls, forcing them to consider cuts to staff and programs in the weeks and months ahead. “If this lasts much longer … then we’re going to start seeing more organizations saying this program and that program have to shut down, they’re having to reduce capacity because they can’t make payroll, or they’re closing their doors,” Rick Cohen, the chief communications officer for the National Council of Nonprofits, recently told The Chronicle of Philanthropy.
There is a sense among some in the nonprofit space that the hesitation among donors might be more of a reassessment than an actual freeze. “There is definitely a ‘pause and wait and see and figure out our strategy and maybe start over’ moment that I think a couple of these foundations are having,” Lara Pierpoint, the managing director of Trellis Climate — a 501(c)(3) that helps philanthropists, donors, and foundations invest in climate opportunities that wouldn’t go forward without philanthropic support — told me. A policy director for a national policymaking and advocacy group similarly suggested to me that the election of Trump caught some of their donors flat-footed, adding that they “didn’t have strategies ready to go.”
That doesn’t necessarily indicate a broader trend. “The good news is that we aren’t seeing a huge amount of change just yet among our donor set,” she told me. “I think our donor set tends to be folks who are already very focused on climate,” she went on. “They are not only not afraid of the word ‘climate,’ but I think they really see the need to focus on it, particularly given what’s going on.”
She did note, however, that it’s still early, and that there are two main headwinds she and her peers are facing. “Some of the donors that we’ve spoken to have said, ‘Hey, we can’t really talk right now or commit to anything because we’re doing a wholesale reevaluation of our portfolio and how we approach giving,’” she said. Additionally, philanthropists who think of themselves more as investors might have questions about how viable their investments will be, given what’s happening with both federal priorities and the gyrating economy.
As my colleague Katie Brigham has reported, climate tech investment had already started to slow down from the frothy days of the early Biden administration; some companies had started to pivot away from promoting the clean, green climate perks of their business models even before Trump took office. (Bloomberg has labeled this semantic game “greenhushing”; the general wisdom is, “it’s still a great time to start a climate startup. Just don’t call it a climate startup.”) Anxieties about the economy can, as a rule, also impact the giving patterns of donors.
“At the end of the day, for very good reasons, philanthropists want to invest in projects and ideas that are likely to be successful and go forward and do the things they are meant to do,” Pierpoint said. “And all of that is under threat right now because climate tech is hard, it’s expensive, it’s competing with fossil fuels, and counting out government support and tax credits, the picture is daunting.”
Others were similarly cautiously optimistic about the days ahead. “There’s a gap, and philanthropy is often well-suited to close gaps,” said Duffuor, the partner at Azolla Ventures. (Both Azolla Ventures and Trellis Climate are part of Prime Coalition, a nonprofit focused on climate financing.)
Like Pierpoint, Duffuor expects to see a “doubling down” by philanthropists who are motivated by climate. Donors who were more on the cusp to begin with — who saw climate investment as en vogue, or were more driven by financial returns — might back away, she agreed. But it seems unlikely that people who genuinely believe in climate causes will be dissuaded by who’s in the White House. “I think people are waiting to see where the gaps are most effective,” she said.
Wadia, the CEO of the venture capital firm Activate, who spoke with me from the CERAWeek energy conference in Houston, agreed that while the language around giving may change, he is still seeing a “momentum for innovation.”
“If we all just step back, what are we really trying to do?” he said, speaking of nonprofits, philanthropists, and start-ups alike. “Everybody might have a different version of how we do it, but we’re all working towards trying to make the planet a better place for people — for all species on this planet. There’s a general consensus that’s a good thing.”
The nonprofit sector is large and diverse, and the impacts of the political and economic moment will not be felt equally. Local environmental justice nonprofits that relied on federal grants will undoubtedly be worse off than the better-insulated climate financing organizations like Activate, although the turbulence at Breakthrough suggests that even the deepest of pockets can still close to climate causes. (Tellingly, companies funded by Breakthrough’s investment arm, Breakthrough Ventures, do not appear to be affected.) The tension and anxiety aren’t likely to break soon; uncertainty and fear remain pervasive.
If anything can be counted on, though, it’s that climate causes — whether local, national, community-focused, or innovation-related — will need their donors more than ever. The people I spoke with expect them to step up. But is that even a good thing?
“It’s not just the immediate impact — the question mark around grant funding and things like that,” Pierpoint of Trellis Climate told me. “It’s also the question of, is this, in the long term, going to reduce trust in the federal government in a way that lowers investment when folks are trying to leverage dollars?” She paused. “I think it would be bluntly catastrophic for climate development if we get into that world.”
Editor’s note: This story has been updated to reflect the fact that Activate is a nonprofit, not a venture capital firm.
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Most Americans still say they would oppose a data center being built near where they live, but the facilities’ standing has improved among Republicans, a new Heatmap Pro poll finds.
The American public’s backlash against data centers may finally be starting to slow down, although the facilities remain staggeringly unpopular, a new poll finds.
Seventy-one percent of Americans said they would oppose a data center being built near where they live, according to a new Heatmap Pro poll conducted by Embold Research earlier this month.
That is an abysmal finding for technology companies and would-be developers of the computing facilities. But it actually represents an improvement from previous polling, and it suggests one of the fastest shifts in public opinion in recent memory may be tapering off.
That shift has been swift. As recently as September of last year, about 43% of Americans said they would support a data center being built near where they live, and Americans broadly appeared to be evenly split on the infrastructure, according to Heatmap Pro polling. Eleven months later, 75% of Americans told the same poll that they would oppose a nearby data center — a 32 point shift. That monumental turnaround helped make data centers a defining issue in this election cycle.
That backlash has transformed the economics of the data center boom, the largest infrastructure buildout in recent U.S. history. The overwhelming majority of data center projects now face some degree of community opposition, Heatmap Pro reporting suggests. More than $260 billion in proposed data centers have been canceled this year after meeting local opposition. The artificial intelligence company Anthropic even flagged the infrastructure slowdown on Monday when it filed for its initial public offering, which is widely expected to be among the largest ever.
Now our new survey shows that Americans’ rejection of the enormous computing facilities may itself be slowing. The small observed drop, which only slightly exceeds the survey’s margin of error, was driven by a four-point decline in the share of Americans who said they would “strongly oppose” the technology.

While Americans of all parties improved their view of data centers, the change was most pronounced among Republicans. In August, 23% of GOP voters said that they would support a data center being built near where they live. In the new poll, conducted after weeks of favorable campaigning by President Trump, 34% of Republicans said they would support a data center slated for their area, while the share of Republicans who said they would oppose it fell from 66% to 58%. Data centers’ standing among independents improved by nine points during the same period.
Democrats remain largely unified against the infrastructure, and data centers’ improvement among that group was just outside the margin of error.
While Americans of every age, race, gender, and partisan ID remain more opposed to local data center development than in favor of it, their standing has also improved among men since the summer. In August, 21% of men said they would support a data center being built near where they live. Now, 28% of men would support one.
Will America be the land of opportunity for AtkinsRéalis’ tried-and-true CANDU?
Unruffled by President Trump’s taunts of turning Canada into the 51st state, Canadian Prime Minister Mark Carney has vowed to regain leverage over Washington by remaking his nation as an “energy superpower.” Instead of building pipelines from the oil fields of Alberta to American refineries, Ottawa will run them to its West Coast ports to sell crude directly to Asia. Rather than importing electricity from offshore wind farms in the American Northeast, Nova Scotia will build its own turbines and sell the power back to energy-starved New England as the Trump administration thwarts the region’s own buildout.
But Canada’s path to reviving its nuclear industry may run — counterintuitively — through the United States.
Last week, Montreal-based AtkinsRéalis inked a deal with utility Hoosier Energy and the Indiana government to explore building up to 6 gigawatts of reactors in the state. The agreement is only a memorandum of understanding to kick off a study examining potential sites across the state. But it marks the first real effort to export Canada’s unique pressurized heavy-water reactors, called CANDUs, to the U.S., and highlights how America’s domestic nuclear industry has atrophied to the point that foreign developers of large-scale units are racing to establish a beachhead in the world’s largest atomic power market.
“If the Americans had created the CANDU, everyone in the world would know about it,” Joe St. Julian, the American-born president of AtkinsRéalis, told me. “There’s just a cultural difference in the way that the Canadians go about things and the way the Americans do.”
Pronounced “CAN-do,” the upbeat acronym stands for Canada Deuterium Uranium and evokes the government’s post-war, can-do spirit, mustered to help protect its sovereignty during the bipolarity of the Cold War. Developed in the 1950s by Canadian government scientists and now used across the country’s entire nuclear fleet, CANDUs rely on deuterium, a version of hydrogen with an extra neutron, as their “heavy water” coolant to sustain their chains of split atoms. Uranium powers virtually all commercial nuclear reactors, but CANDUs are distinct in that they can run on the raw stuff, rather than enriched uranium. That’s their real advantage: By forgoing the costly and heavily scrutinized enrichment process, Canada can tap its vast resources of mined uranium without facing the bottleneck of the expensive enrichment facilities or attracting the intensive oversight of global regulators monitoring for the production of atomic weapons.
The 17 reactors that provide 15% of Canada’s electricity today are all CANDUs. India’s fleet largely borrowed the technology, and Argentina, China, Romania, and South Korea have all imported their own CANDUs. But the buildout largely stopped in the last century. Canada built its last CANDU in Romania in 2007. The last Canadian CANDU — Unit 4 of the Darlington nuclear plant in Ontario — came online in 1993.
Two years ago, Canada sought to restart its reactor buildout by commissioning its first American-designed unit. Construction began last year on the world’s first BWRX-300, a small modular reactor that uses enriched uranium as fuel. The U.S. plans to build the second version of the same reactor at the Tennessee Valley Authority’s Clinch River site. Whether it can deliver the cost savings SMRs promise remains an open question, given that nuclear developers have historically improved economics by making reactors bigger, not smaller.
But Chris Keefer, a Toronto physician-cum-nuclear advocate who hosts the in-depth energy podcast Decouple, told me he believes Canada’s real error is in benching the CANDU. While Ontario’s government-owned utility “got their backs slapped endlessly for having the courage to go first” in building the inaugural SMR on the continent, “they’re idiots to be investing $21 billion of Canadian ratepayers’ money to prop up an American company with American technology,” he said, colorfully characterizing the move as a massive error and “the result of dis-coordinated decision-making.” (Converted from loonies to U.S. dollars, that figure is about $14.9 billion.)
While Keefer added that he opposes the trade war between Washington and Ottawa, he also recognizes it as a potential opening. “Part of me loves it and this deglobalization moment we’re in, where strategic autonomy and national interest matter,” he said.
The Carney administration has yet to set clear rules on what kind of reactor technology it will support domestically, but it could, in theory, limit access to federal subsidies for provinces and utilities that opt for non-CANDU technologies. For now, however, there appears to be quiet agreement between the U.S. and Canada on bringing the technology south. St. Julian said the Canadian Ministry of Energy has been “very supportive” in talks about providing financing for CANDU exports to the U.S. AtkinsRéalis is also in talks with the U.S. Department of Energy, though a source familiar with that agency’s thinking cast doubt over the possibility that the Trump administration would ultimately fund a Canadian project in the U.S.
None of this was a part of AtkinsRéalis’ long game, St. Julian told me. “The U.S. had four or five of its own reactor technologies,” he said. “Why would it build a foreign technology?” But shortly after Trump returned to office, “We looked at it and realized the U.S. is down to a single large reactor technology: Westinghouse. The other three or four are no longer in business.”
That was the opening AtkinsRéalis needed. “The U.S. made clear it had the aspiration to build 300 new nuclear power stations,” St. Julian went on. “Between Westinghouse and new technologies coming online with SMRs, we said they couldn’t possibly reach their aspiration no matter how optimistic they are about the capacity and supply chain of first-of-a-kind technologies.”
So the company applied to the U.S. Nuclear Regulatory Commission for approval of the CANDU. In June, AtkinsRéalis sent the regulator a formal heads-up about its plans to file an application this past summer, and it expects to complete its second topical report for the NRC by the end of this month.
The CANDUs aren’t the only foreign reactors making a play in the U.S., though. Last month, South Korea unveiled a deal with the Trump administration to fund construction of up to six AP1000s and two APR1400s.
The CANDU does have some drawbacks that the APR1400 doesn’t. The same characteristics that let its reactors sustain fission using raw uranium also cause wear and tear that requires a significant refurbishment every 35 years. (Canada is already funding a campaign of repairs domestically.) And while a typical refueling outage for a light water reactor lasts up to two months and renovations ahead of a relicensing can take up to a year, the refurbishment process for a CANDU can take the unit offline for two years or more.
AtkinsRéalis declined to comment on its internal estimates of the cost of such a refurbishment, which is — among industry experts — widely criticized as costly. But St. Julian said the company guarantees at least two refurbishments in a CANDU’s lifetime, giving each unit a 105-year lifespan. Amortizing the costs over more than a century of electricity production, not to mention the company’s experience building units all over the world, means a CANDU is “a lot less expensive” than rival technologies, he said.
“The APR1400’s biggest advantage is the Korean industrial ecosystem,” Nana Menya Ayensu, a non-resident senior fellow at the Atlantic Council who worked on energy policy in the Biden White House, told me. “But the CANDU has lots of advantages that are specific to the technology in terms of not needing enriched fuel.”
Keefer highlighted another upside he’s acutely aware of due to his day job as an emergency-room doctor: CANDUs are particularly well-suited to batch-producing “enormous amounts” of medical isotopes, such as cobalt-60, used in cancer chemotherapy and the sterilization of surgical instruments, among other uses.
The technology is certainly attracting attention. Last month, Argentina and Romania agreed to work together on more CANDU projects. Weeks later, as I reported, Poland’s state-backed nuclear developer approved a tender for a second nuclear power station, for which it’s considering the CANDU. Last week, Turkey signed an agreement with Carney to cooperate on civilian nuclear energy, putting the CANDU in contention for the country’s second atomic power station.
And earlier this month, Atlas Atomics, a startup backed by Ohio’s Republican gubernatorial candidate Vivek Ramaswamy, raised $400 million in a Series A to commercialize its own pressurized heavy water reactor, in what Keefer dubbed in his newsletter the “AmeriCANDU.”
St. Julian said the new competition shows the unique value of the CANDU. “The difference is, we’ve been doing it for 70 years, and we spent tens of millions of dollars to perfect this technology; they’re just starting,” he said. Then he cracked a half smile. “They have the benefit of being a second movement,” he added. “But, man, we have a big head start.”
Plus, one big opportunity for climate change.
Anthropic is worried about its ability to power data centers.
While much of the company’s more-than-330-page filing for its planned initial public offering focuses on the mundane (executive compensation) and the extraordinary (“existential risks” are mentioned three times), considerable space is devoted to the problems of power.
The word “energy” appears 14 times in the section of the document laying out risks to Anthropic’s business, while “climate” or “climate change” is mentioned four times.
The overarching concern the company has is that it might not get enough power for data centers running its large language models. “Delays in securing energy, water, and other critical services for these facilities could further slow the pace at which newly commissioned compute becomes available for use,” is one representative sample from its risk factors section. The document later notes that “our business may face increased scrutiny related to these activities … including from the investment community and the local communities in which we operate,” in a later section on environmental, social, and governance standards.
Anthropic is also concerned with the pace of the energy infrastructure build-out more generally, noting “the construction of the generation and transmission infrastructure on which we depend is itself capital-intensive and exposed to labor shortages, supply chain disruptions, permitting delays, changes in interest rates, tariffs, other cost overruns, and financing constraints.” These concerns will be familiar to anyone following the debate in Washington, D.C., over permitting reform, which is also centered on making transmission easier and cheaper to build.
Later in the document, Anthropic writes that electricity policy is both highly varied across the country — “Grid-tied electrical supply, for instance, is subject to the jurisdiction of federal and state energy regulators, regional grid operators, and public utility commissions” — and also evolving, noting specifically that “environmental standards applicable to power generation continue to evolve, including as a result of changing governmental priorities and shifting public and political views regarding climate change and the appropriate treatment of various power generation sources.”
The risk of these policies is that they could result in “failure to secure access to adequate electrical power,” which could then “adversely affect our cost structure and limit our ability to scale our compute infrastructure, develop and deploy our models, and service our customers.”
Anthropic also acknowledges energy can be quite expensive, writing that costs are “largely outside of our control” and can “rise sharply during periods of peak demand or constrained supply, and such increases in energy costs could adversely affect our results of operations.”
Anthropic is the charter member of an industry group, along with Nvidia and Google, to promote and enable demand flexibility, which would reduce peak demand — and thus bring down electricity prices and alleviate the need for additional new infrastructure — by having data centers draw down their power usage when demand was at its highest. The company notes that it has also signed on to “voluntary commitments to offset the impact of our data center energy consumption on local communities and electricity ratepayers.” Already, the document says, “these commitments have increased, and we expect will continue to increase, our operating costs.”
And while the document has little to say about climate change per se and even less about sustainability and renewables, it does note that “the physical effects of climate change may increase our operating costs over time, as higher average temperatures can increase the power consumption and water usage required to cool equipment at the facilities on which we depend.”
Climate change also acts as an amplifier for potential disasters that could affect the company. “The impact of climate change may increase these risks,” the company says of “war, terrorist attacks, and other acts of political violence, or any significant natural disaster, such as an earthquake, fire, hurricane, tornado, flood, or significant power outage.”
Specifically, Anthropic calls out climate-related risk specific to the Bay Area, where it is headquartered. Or, as it bloodlessly describes it, “a region known for seismic activity and increasingly for the threat of fires.”
Otherwise, climate change and sustainability policy is largely seen as a regulatory and cost burden. For example, “regulations relating to [environmental, social, and governance] matters, including environmental sustainability and climate change, are under consideration, being adopted, or being rolled back or revised, which may impact our necessary disclosures and increase compliance costs,” and “sustainability initiatives, goals, or commitments could be difficult to achieve or costly to implement.”
It notes a variety of California, European Union, and United Kingdom climate disclosure laws “will require the dedication of significant time and resources” while also observing that “across the United States ... enacted or proposed ‘anti-ESG’ policies or legislation or have issued related legal opinions,” which could “expose any sustainability, employment, governance, or other corporate practices we adopt to the risk of litigation, antitrust investigations or challenges by federal or state authorities, and result in injunctions, penalties, and reputational harm.”
The document is far less detailed about what Anthropic and its products could do to alleviate or prevent climate change and its effects. This is not surprising for a regulatory filing concerned with disclosing corporate information and outlining risks to investors — but the filing is also supposed to explain the business opportunities it sees as well. In that regard, climate is relegated to a laundry list of potential scientific projects Anthropic’s products could be helpful with. “Claude is also being applied to pressing global problems in scientific research, drug discovery, education, and climate analysis,” it writes.
If its S-1 is any indication, there will be a lot of work to do.