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It’s useful for more than just decarbonization.

Now that President Donald Trump has been officially inaugurated and issued his barrage of executive orders celebrating fossil fuels and shelving climate technologies such as wind energy and electric vehicles, climate tech startups are in a pickle. Federal funding can play a critical role in helping companies scale up and build out first-of-a-kind projects and facilities. So how to work with a government hostile to one of these startups’ core value propositions: aiding in the energy transition?
Talk of clean tech and electrification may be out of vogue, but its utility is not. The potential of many of these companies goes beyond mitigating climate change and into the realm of energy security and resilience — something the Department of Defense is well aware of.
The White House’s climate webpage has gone dark; the Department of Defense’s climate resilience portal lasted a little longer, but that’s now down, too. Once upon a time, though, the site read, “The changing climate is one of many threat multipliers to National Security, which adds complexity to Department of Defense decisions.” That’s a major reason why this agency can’t stop, won’t stop funding climate technologies. Another reason is that many technologies that happen to be good for the planet might also simply be the best tool for the job, meaning the DOD need not utter the word “climate” at all when justifying its decision to deploy new solutions.
“The Defense Department, so far in our experience, has framed things largely in terms of alternative benefits that our technology can have, such as fuel supply chain redundancy and reliability,” Ted McKlveen, co-founder and CEO of the hydrogen storage company Verne, told me. Verne received a $250,000 Small Business Innovation Research grant from the Army last May to work on the development of hydrogen vehicles.
Cindy Taff, CEO of the next-generation geothermal startup Sage Geosystems, told me something similar. “What the military likes to talk about is energy resilience,” she said, though she has heard the DOD tout the climate benefits of her company’s tech, too. Sage currently has multiple DOD engagements, including feasibility studies with both the Army and Navy and a $1.9 million grant to build a demonstration project for the Air Force.
That’s not to say it’s clear what the Department of Defense’s funding priorities under Trump will be. When I contacted the DOD in mid-December to request an interview for this story, a spokesperson initially told me they would help connect me to the right person. But as Trump’s inauguration drew nearer, I got a message saying the agency would have to hold off until it got more guidance, as “it remains to be seen in the next few weeks what direction the new administration is going.”
Regardless of how the priorities shake out, practically every climate-focused company and venture capitalist I talk to emphasizes that their companies will only succeed if they can make or invest in products that can compete on economics and/or quality alone, sans government support. That was true even before a second Trump turn in the White House started to look like an inevitability, and this new administration will at least partially reveal which companies can do that. But while everybody aims to be independent of federal support, they might not actually need to say goodbye to that funding stream, so long as they can tout their economic and performance benefits to the right customers.
Take Pyka, for example. When Michael Norcia co-founded the autonomous electric aircraft company in 2017, the ultimate goal was to design a passenger plane. “We want that to be our legacy, but we were also very, very realistic about the challenges associated with actually doing that,” he told me. So when the DOD took an interest in the company’s commercial cargo planes and their potential ability to deliver supplies in contested environments, the startup jumped at the opportunity, delivering its first aircraft to AFWERX, the innovation arm of the Department of the Air Force, early last year. Interest from such a lucrative government customer helped the company to close its $40 million Series B round in September.
Of course, the decarbonization benefits of electrifying military cargo delivery would be huge. But unsurprisingly, Norcia told me that the DOD primarily frames the opportunity in terms of the capabilities of all-electric or hybrid-electric planes, which could take a variety of fuels, operate quietly, and give off minimal heat, making them more difficult to detect via thermal imaging. Plus, the more equipment is electrified the better, “in terms of having them be able to operate in a highly contested environment, where moving fuel around maybe is not feasible,” Norcia explained. Not to mention the fact that if a manned aircraft is shot down, people die, meaning that in a counterfactual sense, Pyka’s tech is saving lives.
Verne’s North Star is also decarbonization. And given that the military is the world’s largest oil consumer, McKlveen was excited to partner with the Army to put its hydrogen storage tech to use in medium and heavy-duty vehicles. The company stores hydrogen (ideally green hydrogen, produced via renewables-powered electrolysis) at high density as a cold, compressed gas, making it possible to build hydrogen vehicles with greater range and lower cost than has traditionally been done. Similar to Pyka, the Army is enthused that these vehicles would be difficult for adversaries to detect, as they’re quiet and give off little heat. Likewise, McKlveen told me that hydrogen power could replace the Army’s notoriously noisy generators.
While Verne has also partnered with the Department of Energy and its R&D arm, ARPA-E, McKlveen said that working with the DOD has been unique in a few ways. “The key difference is the DOD is a customer and a grant provider. So they can say both what their needs are as a potential customer and represent a potential customer,” he explained. This, along with the agency’s clear, phased approach that it puts companies through, helps bring a level of transparency to the whole process, from pilot to full-fledged military implementation, that McKlveen appreciates.
And lest we forget, “they also have a very large budget,” he told me. For fiscal year 2025, the DOD has requested $849.8 billion, while the DOE, by comparison, has requested a mere $51.4 billion.
“I find military people to be get-it-done type of people,” Taff of Sage Geosystems told me. “So I think that helps to create a sense of urgency and also push things along a lot faster than you would see with maybe other organizations.” Sage uses drilling technologies adopted from the oil and gas industry to access heat for clean electricity production across a wide variety of geographies. This is an especially attractive option for the DOD as the majority of geothermal infrastructure is underground, and thus well protected from attack. And unlike other renewables, this tech can provide 24/7 energy no matter the weather conditions. So it’s no surprise that the military is pouring money into this sector, pursuing partnerships with other big names in the geothermal space such as Fervo Energy and Eavor.
Electric planes, hydrogen, and geothermal all felt intuitively justifiable to me from a defense standpoint, but I was more surprised to learn that the DOD has gotten into the alternative proteins, a.k.a. “fake meat”, industry. Though meat substitutes won’t power tankers or keep the lights on, the Defense Department’s $1.4 million grant to The Better Meat Co. is intended to strengthen the American supply chain. China’s Ministry of Agriculture and Rural Affairs views lab-grown meat as critical to its five-year agricultural plan. “So we don’t want to have the United States be importing clean protein in the way that we’re currently dependent on Asia for our semiconductors and photovoltaics,” Paul Shapiro, the company’s CEO, told me.
The Better Meat Co. produces a protein called Rhiza that’s derived from microscopic fungi, which it then sells as an ingredient to other companies to make either 100% animal-free meat or a meat blend. “This isn’t an alternative protein program. It’s a domestic biomanufacturing program,” Shapiro told me when I asked if military funding for meat substitutes could be at risk under Trump. Looking at some of the other companies that got grants through the same program, he said, “it’s literally like bio manufacturing things for military planes and jet lubricants and chemical catalysts for bullets.” That is, probably not Republican targets for defunding. “It’s clearly solely about wanting the U.S. to be a leader in biomanufacturing for the products that the world is going to depend on in the future.”
The DOD also sees promise in numerous other clean energy technologies, including nuclear microreactors for their portability and ability to provide off-grid energy in remote locations and alternate battery chemistries that could help the U.S. move away from a dependence on Chinese-produced lithium-ion batteries.
But despite the deep well of funding and pragmatic approach to deployment that the Department of Defense offers, agreeing to work with the DOD isn’t always an obvious choice. Many fear their company’s tech could be used in ways and in wars that they oppose. In 2018, for example, thousands of Google employees signed a letter opposing the company’s participation in Project Maven, a partnership with the Pentagon that uses artificial intelligence to improve the accuracy of drone strikes. Supporters of the project said it would lead to fewer civilian deaths, while protestors argued that Google “should not be in the business of war.” Google did not renew the contract. More recently, employees at Microsoft, Google, and Amazon have signed petitions opposing their company’s provision of cloud computing and AI services to the Israeli government.
Norcia noted that most, but not all of his employees were neutral to positive when it came to working with the Air Force, while “for a small minority of the company, it unfortunately was not something that they really wanted to devote their life to.” While he understands that perspective, Norcia does believe that Pyka’s work with the DOD is a net positive for the world. “If you assume wars are going to keep happening — which, unfortunately, I think is the reality — I’d rather have it be the case that they’re more of a robot war than a human war,” he told me. And at the end of the day, passenger planes are still the goal.
As for his team at Verne, McKlveen told me everybody was on board. “The Defense Department has led to some of the biggest innovations of the last century, whether that’s the internet or GPS. And our team knows that.” Plus, even if the DOD doesn’t talk much about the climate benefits of sustainability-focused tech, that doesn’t negate them. A 2019 study revealed that the Pentagon purchases an average of 100 million barrels of oil per year, so from that perspective, “it’s hard to find a bigger customer that we can address,” McKlveen told me.
Norcia agreed. “I think the gains of your impact get turned way up if you’re doing work with the DOD,” he said, “as opposed to, you know, building an app that makes something incrementally more efficient or more addictive.”
Editor’s note: This story has been updated to reflect that DOD’s climate resilience portal has been taken down.
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Climate tech investors talk investing in moonshots at SF Climate Week.
Three climate investors walked onto a boat.
That’s not the start of a joke — it’s a description of a panel at Heatmap House, a day of conversations and roundtables with leading policymakers, executives, and investors at San Francisco Climate Week (at the Klamath, a venue made out of an old ship).
Heatmap’s Katie Brigham moderated the roundtable conversation with Prelude Ventures Managing Director Gabriel Kra, Azolla Ventures co-founder Matthew Nordan, and Toba Capital Partner Susan Su. Many of their investments are in moonshot climate technologies that other financial players might avoid.
“Things that look contrarian is kind of what we do,” said Kra. “Occasionally, there’s an idea that looks bad that’s actually a good idea.”
Prelude Ventures funds early-stage climate companies that are “weird, or non-consensus, or counter cyclical, or just ahead of the curve,” according to Kra.
Nordan, for instance, said he backs cultivated meat despite some doubts that the category will achieve widespread popularity.
“I’m presently leading an investment in a company called Pythag Technologies,” said Nordan, talking about the generative AI company focused on lab-grown meat. “It’s actually a really interesting time to invest counter-cyclically in a field like that.”
Like Nordan, Su described her firm as one that is open to unconventional choices.
“We are very weird in that we invest across lots of different categories and lots of different stages,” said Su.
One of her personal investments is in Xeno. “This company does electric motorbikes for commercial drivers, as well as swapping and energy networks in emerging markets, starting in East Africa,” she explained.
The panelists told Katie that opting for less popular investments can be rewarding because they may help fund a major breakthrough.
“We placed a couple of bets on fusion before this current melée occurred that sort of had everybody thinking that, you know, fusion was the next hot thing,” said Kra (who claimed that he intended the pun).
Nordan emphasized the gap that venture can fill, left by larger institutional investors who may shy away from high-risk technologies.
“If there are true breakthroughs out there that just may not be investable by mainstream finance at the earliest stages,” Nordan said, “not because people don’t think they’re really good ideas, but they may be crazy early-stage or kind of weird, or non-consensus, or counter-cyclical, or just ahead of the curve, it would be a real shame.”
Noise ordinances won’t necessarily stop a multi-resonant whine from permeating the area.
What did you do for Earth Day this year? I spent mine visiting a notoriously loud artificial intelligence campus in Virginia’s Data Center Alley. The experience brought home to me just how big a problem noise can be for the communities adjacent to these tech campuses – and how much further local officials have to go in learning how to deal with them.
The morning of April 22, I jumped into a Toyota Highlander and drove it out to the Vantage VA2 data center campus in Sterling, Virginia, smack dab in the middle of a large residential community. The sensation when I got out of the car was unignorable – imagine an all-encompassing, monotonous whoosh accompanied by a low rumble you can feel in your body. It sounds like a jet engine that never stops running or a household vacuum amplified to 11 running at all hours. It was rainy the day I visited and planes from nearby Dulles International Airport were soaring overhead, but neither sound could remotely eclipse the thudding, multi-resonant hum.
If you want to hear the sound for yourself, this video accurately sums it up.
After parking nearby I walked to one of the residential enclaves adjacent to VA2. One resident of a home across the street, who declined to give me her name, said she moved there before the project was completed. When asked how she felt about the noise, she told me, “It’s not as bad as it could be on the other side [of the data center], where all the equipment is.” (While the sound does get louder on the other side, I could clearly hear VA2 from her driveway.)
VA2’s noise has been causing problems for months, as documented by numerous social media posts, local news clips, and a feature published in Politico. It’s doubtful many of those living near the data center wanted it there. The project was built quite quickly – so quickly that Google Earth still shows undeveloped woodlands on the site. Per public filings, Vantage first proposed the facility in 2022 under the county’s fast-track commercial incentive program, an expedited permitting process for specific preferred industries. It was under construction as recently as October 2024, according to images captured by Google Street View.
Noise is one of the most common issues associated with data centers. At least a third of all conflicts over data centers are over noise complaints, and noise is the number one reason for opposition in cases where projects were ultimately canceled, according to Heatmap Pro data.
This issue goes back almost a decade. In 2019, residents of the Phoenix ex-urb Chandler, Arizona, became irate after a loud monotonous hmmmm began emanating from a CyrusOne data center. In that case, CyrusOne traced the noise back to chilling fans, and the company reduced the sound with muffling devices.
Chandler wound up adopting a new ordinance in 2023 requiring sound mitigation measures to prevent companies from exceeding certain ambient noise levels in the surrounding areas. That did nothing to improve the mood of the people who live there, however. Now Chandler, once known as a potential data center development hub, is now firmly in the anti- camp. The city council unanimously rejected a proposed $2.5 billion data center campus in December over noise concerns, despite an expensive lobbying push backed by former Arizona Senator Kyrsten Sinema.
As data centers spread across the U.S., noise is becoming an ever-more-common complaint. You can hear the familiar hum at a DataOne data center project in Vineland, New Jersey. DataOne told us they “understand concerns about ambient noise in the area” and are operating within the limits of local noise ordinances.
The hum is also in Dowegiac, Michigan, where people living nearby are calling their new Hyperscale Data facility a “noise trap,” with little explanation to date for the issue. Hyperscale Data did not respond to a request for comment.
And the hum is in Mount Pleasant, Wisconsin, where the sound from a new Microsoft data center campus rises above any din from rain. The hyperscaling giant is doing more to mitigate the issue than I’m used to seeing from data center developers, however.
On April 15, the company published an update on its own internal investigations into noise complaints. “Although the facility noise levels meet the requirements set by local ordinance, we take this feedback seriously and understand the impact this has had on our neighbors,” the update read. “We anticipated that our systems would need adjustments and create some noise as part of the datacenter startup, but we did not expect the tonal quality of the sound to travel as far as it has.”
To address the noise, Microsoft said it was “manually adjusting the cooling fans” to reduce noise, and that “we expect this change to address community concerns about the tonal humming.” On top of that, the company said it will install “additional sound reduction components” to “provide even further reductions in measured sound levels.” A Microsoft spokesperson told me in an email: “We’ve identified the source of the noise concerns and have implemented changes to significantly reduce sound from our facility.”
It isn’t cooling fans causing the noise at Vantage’s VA2 in Virginia, however. The sound, according to media reports, is coming from gas turbines powering the data center.
VA2 is one of the first in Virginia to function entirely off-grid, a design companies are adopting in order to avoid lengthy grid connection processes. Company spokesman Mark Freeman told me the facility is “fully compliant with all local noise ordinances, and this has been verified by third-party sound studies.”
“Additionally, in line with our commitment, we are actively working with third-party engineers to explore additional sound mitigation options,” Freeman continued. Freeman said “Our goal is to further reduce noise levels where possible and continue to foster a positive environment for everyone.”
Here’s the thing, though: I visited the Vantage campus after initially hearing from the company, and it was loud. Very loud.
I did not bring a decibel meter with me, so I cannot know whether they were operating within legal limits that day. What I do know is that noise ordinances struggle to properly capture sounds in multiple frequency ranges, making high and low frequencies challenging to regulate, according to the Environmental and Energy Study Institute, a bipartisan non-profit think tank. Officials representing Loudon County, where VA2 is located, have acknowledged that the local ordinance may need to change in order to address the most distressing frequencies from the data center campus.
“We can change the zoning ordinance and noise ordinance,” Loudon County supervisor Mike Turner told local TV station WUSA9 last week. “Noise can be mitigated. I just don’t believe that the noise problem cannot be solved.”
I wrote Freeman, the Vantage spokesman, to tell him I had visited the VA2 campus and found the noise to be “quite foul.” He replied soon after, telling me that Vantage is going “above and beyond what is required in order to address concerns from nearby residents.” The company is using “targeted enhancements to turbine-related equipment such as dampening equipment, enclosure inlets and enclosure exhausts.” These measures “represent meaningful progress and will help us better evaluate the effectiveness of the broader solutions under consideration.” Freeman also said the company is “actively assessing additional options” focused on “targeted frequency ranges.”
As we continue to track local regulation of data centers, I’m we’ll see many more cases like VA2, in which obtrusive sound prompts forms of regulation we may have never seen before.
Or, people will just hear these noises and say no to more data centers.
Plus more of the week’s biggest project development fights.
New Jersey – Crucial transmission for future offshore wind energy in New Jersey is scrapped for now.
Montgomery County, Alabama – A statewide solar farm ban is dead for now after being blocked by lawmakers who had already reduced its scope.
Doña Ana County, New Mexico – The Federal Energy Regulatory Commission wants to move faster on data center power infrastructure, but at least one energy project for a major hyperscaler is trapped in internal conflicts.
Hawkins County, Tennessee – A local free-market nonprofit is suing this county in federal court to argue data center bans are unconstitutional.
Mingo County, West Virginia – Speaking of federal data center cases, West Virginia regulators will now be forced to testify in the legal challenge against a large hyperscaler in the heart of coal country.
Will County, Illinois – This county reversed several solar project rejections, but it didn’t do so happily.
King County, Washington – Seattle might be the next major city to ban data centers.