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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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The spinoff of Lawrence Livermore National Lab has a new 10-point plan to get onto the grid by the 2030s.
One of fusion energy’s newest startups, Inertia Enterprises, is betting that the fastest route to commercial fusion runs through one of the field’s oldest ideas. The company, which raised a $450 million Series A earlier this year, plans to build a power plant based on the laser-driven fusion system pioneered at Lawrence Livermore National Laboratory’s — the only tech yet to have produced more energy from a fusion reaction than it took to initiate it. Now, Inertia has shared its commercialization roadmap exclusively with Heatmap, detailing the 10 near-term capabilities it must demonstrate before this landmark experiment can become a grid-scale power plant by the mid-2030s.
The roadmap offers a route from the national lab’s impressive but commercially impractical fusion demonstrations to an economical power plant capable of producing electricity for the grid. At its core are a set of milestones — mostly aimed at developing cheap, mass-manufacturable components — that Inertia says it must clear before those individual systems can be integrated into a working plant. This road is not necessarily linear, however, as various teams will likely be working on many of these goals simultaneously.
At least the physics of Inertia’s approach are already proven, the startup’s CEO Jeff Lawson told me, pointing to the fusion experiments at Lawrence Livermore’s National Ignition Facility as a proof-of-concept. The lab’s demonstration of net energy gain caps more than six decades and $30 billion (in 2026 dollars) of U.S. fusion research. The remaining challenges, he argued, are all engineering-related, requiring “elbow grease, hard work, and smart people” rather than breakthroughs in fusion science.
"It seems to us like a startup or a commercial company of any variety should be focused on commercializing a proven scientific result, as opposed to actually trying to demonstrate the basic science to begin with," Lawson told me. Basic science, he argues, is better left to national labs and universities, where researchers can pursue "unbounded problems" that don’t align with the expectations and timelines of venture-backed startups.
Indeed, no fusion startup has yet achieved scientific breakeven, the milestone Lawrence Livermore first hit in 2022, and has since repeated numerous times. But leading players such as Commonwealth Fusion Systems and Helion Energy maintain that it’s only a matter of time before they validate the physics behind their own reactor designs, which they claim will be highly cost-competitive.
Lawson, on the other hand, readily acknowledged that Lawrence Livermore’s tech is uneconomical in its current form. His bet is simply that the more predictable path to a commercial reactor is to drive down the cost of the lab’s validated fusion approach, known as inertial confinement. This system relies on high-powered lasers firing at a millimeter-scale pellet of fusion fuel, compressing it to extreme temperatures and pressures until the atoms fuse. Today, the National Ignition Facility makes each individual fusion target by hand, a workable solution given that it only uses about a dozen per year.
That production model, however, isn’t remotely plausible for a grid-scale power plant. Because each fusion reaction lasts just a fraction of a billionth of a second, a commercial facility must fire its lasers at a fresh target about 10 times per second to generate continuous electricity — requiring the production of hundreds of millions of targets each year.
Scaling production to roughly a million pellets per day and making them inexpensive enough for commercial operation without compromising the strength or precision required for fusion ignition is central to Inertia’s roadmap. That includes goals five, seven, eight and nine — industrializing the manufacturing of the carbon shells that hold the fusion fuel, making the thin films that hold those carbon shells both durable and cheap, scaling up and automating fusion target assembly, and speeding up how fast targets are filled with the requisite deuterium-tritium fuel.
The other central focus of the roadmap is the laser system, which will ultimately consist of 1,000 individual units operating in concert to compress and heat the fusion fuel. Key priorities include reducing the system’s cost (goal two), dramatically increasing its firing cadence (goal three), and bolstering its durability to withstand high-intensity operations (goal four). Goal six also complements these efforts, calling for the development of a control system capable of tracking moving fusion targets to precisely align each laser shot.
Goals one and 10 bookend the journey with some broader milestones. The first focuses on increasing the fusion target’s energy gain — the ratio of fusion energy produced to laser energy delivered — to more than 25 times ignition. Today, the National Ignition Facility’s best-performing laser shot has yielded a gain of just over four times what it took to start the reaction. Goal 10 then zooms out to the ultimate objective: integrating all these technologies into a commercially viable power plant that can deliver either electricity or industrial heat to end customers.
To reach that point, Inertia has embarked on an industrial engineering hiring spree, recruiting folks with experience taking complex hardware systems from prototype to mass production, “not unlike the processes that are used in the semiconductor or consumer electronics world,” Lawson explained. The company has been making progress on its component development goals since the beginning of the year, he told me, and expects to announce the successful demonstration of a few of these milestones in the coming months. Lawson ultimately expects Inertia to complete the core components of its laser and target manufacturing systems by the middle of next year.
The team will spend the next two to three years integrating these individual pieces into two fully operational subsystems, a prototype laser system and a target manufacturing line. Around 2030, the company will begin combining those subsystems into a first-of-a-kind fusion power plant, which will also serve as the proving ground for the target chamber, tritium fuel breeding system, and power conversion system that turns fusion heat into electricity. By the middle of the next decade, Inertia aims to be generating power from this first plant, setting the stage for the company to build and connect additional grid-scale commercial power plants.
There are plenty of engineering trade-offs that the company will have to solve for. Take the decision around how to size the target chamber, for example. “If you make it bigger, your walls have an easier time and survive longer, but it’s more expensive. If you make it smaller, your walls have a tougher time because they’re closer to all the heat and energy that the fusion reaction is creating, but now your power plant costs less to build.”
But to Lawson, this represents exactly the type of problem Inertia was built to solve: complex engineering issues that come to the fore once scientists have demonstrated the fundamental physics are sound. He thinks other fusion companies may someday reach this stage, as well — though he’s unwilling to hazard a guess on exactly what approach or startup is best positioned to do so.
“There have been generations of scientists who’ve made their predictions about fusion energy and gotten it wrong,” he told me. “I’m not going to pretend to be smarter than them. All I’m here to say is, just knowing that one did work, we can commercialize it.”