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While they’re getting more accurate all the time, they still rely on data from traditional models — and possibly always will.

The National Oceanic and Atmospheric Administration has had a bruising few weeks. Deep staffing cuts at the hands of Elon Musk’s efficiency crusaders have led to concerns regarding the potential closure of facilities critical to data-gathering and weather-forecasting operations. Meteorologists have warned that this could put lives at risk, while industries that rely on trustworthy, publicly available weather data — from insurance to fishing, shipping, and agriculture — are bracing for impact. While reliable numbers are difficult to come by, the agency appears to have lost on the order of 7% to 10% of its workforce, or more than 1,000 employees. NOAA’s former deputy director, Andrew Rosenberg, wrote that Musk plans to lay off 50% of the agency, while slashing its budget by 30%.
Will that actually happen? Who the heck knows. But what we can look at are the small cracks that are already emerging, and who could step in to fill that void.
One thing that’s certain is that the National Weather Service, a division of NOAA, announced last week that it is suspending operations at a weather balloon launch site in Alaska, due to staffing shortages. The data gathered at this remote outpost helped inform the agency’s weather forecasts, which are relied upon by hundreds of millions of people, as well as many of the world’s largest companies and public agencies.
Perhaps to Musk’s department, this looks like a prime opportunity for the private sector to step up and demonstrate some nimble data gathering prowess — and indeed a startup that I’ve covered before, WindBorne, has already offered its services. The company, which makes advanced weather balloons, has offered to provide NOAA with data from its own Alaska launches for six months, at no cost. WindBorne is also one of a number of private companies creating AI-based weather models that have outperformed NOAA’s traditional, physics-based models on key metrics such as temperature, wind speed and direction, precipitation, humidity, and pressure.
All this raises the question, though, of what kind of role the private sector could and should play in the weather forecasting space overall. If the architects of Project 2025 have their way, NOAA would be “broken up and downsized,” and its National Weather Service division would “fully commercialize its forecasting operations.” If the Trump administration achieves these goals, “the Weather Service would cease to function in a way that it could meet its mandate to protect American life and property,” Daniel Swain, a climate scientist at University of California Agriculture and Natural Resources, told me.
But given that heavyweights like Google, Huawei, and Nvidia are already in the AI-based weather prediction game, along with startups such as WindBorne and Brightband, which is making weather predictions tailored to the needs of specific industries such as insurance, agriculture, or transportation, it wasn’t clear to me whether, if NOAA were to crumble, the accuracy of weather forecasts necessarily would, too. I thought that perhaps Musk, the White House’s most notorious AI enthusiast, might be thinking the same thing. So I asked around.
“There’s actually a very good argument that I think would be very uncontroversial to expand the role of the private sector, even to offload certain parts of the workflow to the private sector,” Swain told me, with regards to NOAA and its adoption — or lack thereof — of AI-based weather forecasting. But what nobody wanted was to get rid of free, publicly available government forecasts completely.
“I don’t want to have to figure out what company to trust. I just want to be able to go and open the National Weather Service and know what’s going on,” John Dean, the CEO and co-founder of WindBorne, told me.
Julian Green, the CEO and co-founder of Brightband, agreed. “The government doesn’t just forecast the weather, but it gives people alerts. And there’s regulation around whether [it tells you that] you should evacuate, or shut your factory down, or so on.” It’s not hard to imagine the ethical quandaries that could arise from a private company with a profit motive deciding who can access potentially life-saving forecasts, and for how much.
WindBorne’s and Brightband’s AI models, as well as those from tech giants such as Google, are significantly less computationally intensive to operate than those from NOAA or the other leading weather forecasting agency, the European Center for Medium-Range Weather Forecasts. These traditional models rely on supercomputers crunching complicated atmospheric equations based on the laws of physics to make their predictions.
But this doesn’t mean the physics-based models are getting replaced by AI now, or potentially ever. Government data and traditional forecasts still make up the backbone of advanced AIs, which are trained on decades of data largely gathered by NOAA satellites, weather balloons, and radar systems, and then interpreted through the lens of standard physics-based models. After training is complete, the AI models can predict what weather patterns will develop, much like ChatGPT predicts the next word in a sequence, but only after being fed a snapshot of initial weather conditions — also pulled from traditional physics-based models.
Essentially, these AI forecasts are built on the backs of the giants, and while their outcomes are hugely promising, they could not exist without that solid foundation. While one day, it might be possible to operate AI forecasting models without relying on traditional models, Dean and Green told me that physics-based models might always be critical for training the AI. So while their companies’ respective models have yielded impressive results, both Dean and Green nixed the idea that their companies could wholly replace the predictions made by the National Weather Service.
All of this is in flux of course, but as Green put it to me in an email, “a good mechanic doesn't throw away good older tools just because you get new tools.” Plus, as Dean explained, there are still conditions under which physics-based models tend to outperform AI, such as “really small-scale and high-res phenomena — let’s say convective events, let’s say severe thunderstorms in the Plains, or tornado formation.”
Even Project 2025’s authors point out that private industry forecasters rely on publicly available NOAA data, though it doesn’t make any reference to AI models or physics models. The document simply says that the agency “should focus on its data-gathering services” and the “efficient delivery of accurate, timely, and unbiased data to the public and to the private sector.”
There are also questions around whether AI models, trained on data from the past, will be able to predict the types of unusual and extreme weather events that are becoming more and more common in a warming world, Swain told me. “Does it fully capture those?” he asked. “There’s a lot of evidence that the answer is no.”
Lastly, NOAA’s weather model, the Global Forecast System, is simply measuring much more than the AI models do today. “It predicts so many different phenomena, like different types of snow, hail, mixing ratios, turbulence,” Dean said. “We’re building up over time to add more and more variables. But for both WindBorne and other models, it’s not the same currently as what GFS does.”
So while the Heritage Foundation might want to delegate all forecasting responsibilities to private companies, the vision I heard from the startups I talked to looked more like a mutually beneficial arrangement than the full commercialization of weather prediction, or even a clean division of labor. “It’s not privatized weather, it’s a public-private partnership,” Dean said of his ideal future, “where you get freely available forecasts from a public institution like NOAA, but they work with our industry to iterate faster and to drive more innovation.”
What everyone seems to want is simply for the government to forecast better, and today that means moving quickly to build AI-based models. NOAA has taken some steps forward, prototyping some models, bolstering its computing capabilities, and even recently partnering with Brightband to optimize its observational data to train AI models. But it remains behind other agencies in this regard. “The Chinese government and the European Center for Medium Range Weather Forecasts have done a far better job at adopting AI-based weather forecasts than NOAA has,” Dean told me. “So something does need to change at NOAA to get them to move faster.”
Indiscriminately laying off hundreds of the agency’s employees may not be the best place to start. But if there’s anything we know Musk loves, it’s AI and private sector ingenuity. So maybe, just maybe, this administration will be able to forge the kind of partnerships that can supercharge federal forecasting, while keeping NOAA’s weather predictions free and open for all. Or maybe we’ll all just be paying the big bucks to figure out when a hurricane is going to hit.
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Big fundraises for Nyobolt and Skeleton Technologies, plus more of the week’s biggest money moves.
Following a quiet week for new deals, the industry is back at it with a bunch of capital flowing into some of the industry’s most active areas. My colleague Alexander C. Kaufman already told you about one of the more buzzworthy announcements from data center-land in Wednesday’s AM newsletter: Wave energy startup Panthalassa raised $140 million in a round led by Peter Thiel to “perform AI inference computing at sea” using nodes powered by the ocean’s waves.
This week also saw fresh funding for more conventional data center infrastructure, as Nyobolt and Skeleton Technologies both announced later-stage rounds for data center backup power solutions. Meanwhile, it turns out Redwood Materials is not the only company bringing in significant capital for second-life EV battery systems — Moment Energy just raised $40 million to pursue a similar approach. Elsewhere, investors backed an effort to rebuild domestic magnesium production, and, in a glimmer of hope for a sector on the outs, gave a boost to green cement startup Terra CO2.
Cambridge-based startup Nyobolt has become the latest battery company to reach a $1 billion valuation, with its expansion into the data center market helping fuel excitement around its tech. Spun out of University of Cambridge research in 2019, the company develops ultra-fast-charging batteries based on a modified lithium-ion chemistry. Its core innovation is an anode made from niobium tungsten oxide, which Nyobolt says enables its batteries to charge to 80% in less than five minutes, with a cycle life that’s 10 times longer than conventional lithium-ion, all without the risk of fire.
The company has now raised a $60 Series C, following what it describes as a period of “rapid commercial momentum,” with revenue increasing five-fold year-over-year as customers in the robotics and data center industry piled in. Symbotic, an autonomous robotics company and existing customer, led the latest round. While Symbotic previously relied on supercapacitors to power its robots, Nyobolt’s says its batteries provide six times more energy capacity in a lighter package, allowing its warehouse robots to work for retailers like Walgreens, Target, and Kroger around the clock.
Now the startup is targeting data center customers too, positioning its tech as a fast-acting fix for the sudden power surges common to large-scale artificial intelligence workloads, as well as a temporary backup power solution for outages. While it has no confirmed domestic data center customers to date, it does have a nonbinding agreement with the Indian state of Rajasthan to deploy over 100 megawatts of off-grid AI data center and power management infrastructure, part of a broader push to expand its presence across the country.
Notably, the press release made no mention of plans to sell its tech to electric vehicle automakers, though this appears to have been a central focus previously. As recently as last summer, executive vice president Ramesh Narasimhan told the BBC that he hoped Nyobolt’s batteries would “transform the experience of owning an EV.” But while its tech does enable extremely fast charging, its underlying chemistry is not optimized for long-range driving. A sports car built to test the company’s batteries had just a 155 mile range. So like many of its climate tech peers, the company appears to be betting that data centers now represent a more reliable opportunity.
This week brought additional news from another European player aiming to smooth out data center power surges. Estonia-based supercapacitor startup Skeleton Technologies raised $39 million in what it describes as the first close of a pre-IPO funding round, with a U.S. listing planned for next year. Its core tech is built around a “curved graphene” structure, which the company likens to a crumpled sheet of paper with a high surface area. The graphene’s many exposed surfaces and edges allows it to hold more electric charge, which Skeleton says delivers a 72% improvement in energy density.
Like Nyobolt, Skeleton says its tech offers faster response times and longer cycle life. But supercapacitors are a fundamentally different technology than Nyobolt’s modified lithium-ion solution. Though they offer near-instantaneous response times, they store very little energy — just enough to smooth out microsecond power spikes in GPU workloads. Nyobolt’s batteries, by contrast, aim not only to smooth out data center power spikes, but also to deliver about 90 seconds of backup power in the case of an outage, before a generator or other backup source kicks in.
Skeleton is already mass-producing supercapacitors in Germany and delivering to unnamed “major U.S. hyperscalers for AI infrastructure.” It’s also making moves to expand its U.S. footprint ahead of its pending IPO, opening an engineering facility in Houston and aiming to begin domestic manufacturing of AI data center solutions in the first half of this year.
Last year brought a wave of new climate tech coalitions, with one of the most ambitious efforts known as the All Aboard Coalition. This group of venture firms is targeting the investment gap known as the missing middle, which falls between early-stage venture rounds and infrastructure funding. The model is relatively mechanical: When three or more member firms participate in a later-stage round for a company, the coalition automatically coinvests out of its own fund, matching the members’ combined contribution.
The group made its first investment in January, supporting the AI-powered geothermal exploration and development company Zanskar’s Series C round. This week, it announced its second: a $22 million commitment to low-carbon cement startup Terra CO2, bringing the company’s Series B total to $147 million. Cement production accounts for roughly 8% of global emissions, a figure Terra aims to shrink by making so-called "supplementary cementitious materials” — which can partially displace traditional cement in concrete mixes — from abundant silicate rocks. By grinding and thermally processing these rocks into a glassy powder, Terra’s product mimics the properties of conventional cement. The company says it can replace up to 50% of the cement in typical concrete mixes, lowering associated emissions by as much as 70%.
The new funding will help Terra build its first commercial-scale plant in Texas, exactly the type of first-of-a-kind project that the coalition was designed to support. But the scale of this challenge remains clear. As noted in ImpactAlpha’s coverage, the coalition has raised just $100 million toward its goal of a $300 million fund — already a relatively modest goal considering the capital intensity of novel infrastructure projects. Bloomberg previously reported that the group aimed to raise the full amount by the end of October 2025, raising questions about the willingness of LPs to bet on projects at this crucial but capital-intensive juncture.
When I think about repurposing used electric vehicle batteries for stationary storage, I think of battery recycling giant Redwood Materials, which raised a $425 million Series E in January after moving aggressively into this promising market. But while Redwood’s well-established recycling business certainly provides it with the largest pipeline of used batteries, it’s far from the only company pursuing this business model. A smaller player with a largely similar approach underscored that this week, when it announced a $40 million Series B to scale its gigafactory in Texas and expand its facilities in British Columbia.
That’s Moment Energy, which focuses on using second-life EV batteries to power commercial and industrial sites such as data centers, hospitals, and factories. Like Redwood, it relies on proprietary software to aggregate battery packs with myriad chemistries and design specs into coordinated grid-scale systems. What the company sees as its critical differentiator, however, is its safety standards. Moment has achieved UL certification, a key safety benchmark that it says others in the industry have yet to meet.
In a shot at its competitors, the company described itself in a press release as the “only provider proven capable of deploying second-life battery storage systems in the built environment without special dispensations or regulatory loopholes.” While Moment never names names, Redwood’s first commercial-scale system sits on its own private land in an open air setting, where certification is arguably unnecessary. “What most other second life [battery] companies are now trying to say is, let’s just lobby to make second life UL certification easier, because it is impossible to get UL certification, as it stands,” the company’s CEO, Edward Chiang, told TechCrunch. “But at Moment, we say that’s not true. We got it.”
As I wrote last September, it’s a good time to be a critical minerals startup, because as you may have heard, “critical minerals are the new oil.” These materials sit at the center of modern energy infrastructure — batteries, magnets, photovoltaic cells, and electrical wiring, to name just a few uses — plus their supply is concentrated in geopolitically tense regions and subject to extreme price volatility. It also certainly doesn’t hurt that the Trump administration loves them and wants to mine and refine way more of them in the U.S.
The latest beneficiary of this enthusiasm is Magrathea, which this week raised a $24 million Series A to build what it says will be the only new magnesium smelter in the U.S., in Arkansas. The company has now raised over $100 million in total, including a $28 million grant from the Department of Defense. Its approach relies on an electrolysis-based process that’s able to extract pure magnesium from seawater and brines, which it positions as a cleaner, cheaper alternative to the high-heat, emission-intensive method that China uses to produce most of the world’s magnesium today.
The U.S. military has taken note of this potential new domestic supply. Magrathea’s 2022 seed round coincided with Russia’s invasion of Ukraine, as the military looked to scale domestic defense tech supply chains. Magnesium alloys are often used to help reduce weight in EV components, a benefit equally applicable to military helicopters, drones, and next-generation fighter jets. So while these defense applications represent somewhat of a pivot from the startup’s initial focus, a greener fighter jet is still better than a dirty fighter jet.
Current conditions: A series of tornadoes has flattened entire neighborhoods in central and southern Mississippi, causing what one pastor called “just total devastation” • The heat index across the northern half of the Philippines’ main island of Luzon could feel as high as 122 degrees Fahrenheit, raising the risk of heat stroke • There will be some hot moms in Phoenix this weekend when temperatures in Arizona’s sprawling capital top 108 degrees on Mother’s Day.
President Donald Trump’s attempts to kill the offshore wind industry through regulatory fiat have largely failed to hold up in court. But as the administration finds new success in paying off developers to abandon ocean leases for seaward turbines, it’s attempting the original playbook now on the onshore wind sector, holding up more than 150 projects by refusing to give out once-routine approvals from the Department of Defense. That includes projects that are nowhere near military bases or defense-related infrastructure, and comes despite the fact that U.S. policymakers across the political spectrum agree we need to bring as much new power online as quickly as we can to meet booming demand from data centers and electrification. “This is the strategy for how you kill an industry while losing every case: just keep coming at the industry,” an energy lawyer told Heatmap’s Jael Holzman. “Create an uninvestable climate and let the chips fall where they may.” In other words: The bombardments may fail, but the siege can win..
When French energy giant TotalEnergies became the first offshore wind developer to take up Trump on his offer of $1 billion to abandon two projects back in March, the administration’s effort to kill off an industry Trump has personally opposed since long before he gained political power seemed to finally be catching a foothold following a series of legal retreats. By April, however, blowback to the deal had started building. Reporting from Heatmap’s Emily Pontecorvo found that the U.S. government’s agreement with Total didn’t actually mandate any new investments in fossil fuels, as the administration strongly implied, and that and that the payment may not have actually met the requirements to be drawn from a federal coffer designed to fund legal settlements. Shortly afterward, House Democrats announced plans to investigate Total’s contract with the government. This week, California regulators launched their own probe into one of two new developments that took up Trump’s offer, a floating offshore wind project that was set to be the first such project on the West Coast. Now one of the largest U.S. pension funds is reconsidering its stake in Total. Citing “significant concerns” over Total’s decision to cancel its two offshore wind leases and double down on fossil fuels, the New York State Common Retirement Fund said it would evaluate selling the $1.6 million stake in the company.
In a letter to Total CEO Patrick Pouyanné that the Financial Times reviewed, Thomas DiNapoli, the New York State comptroller and trustee of the retirement fund, said: “As the fund continually evaluates companies based on credible transition plans, portfolio companies’ backtracking may impact the fund’s risk assessment results and proxy voting decisions.” While “TotalEnergies had sought to be a leader in [the] energy transition,” he added, “now investors are left scratching their heads over how the board came to this decision to abandon that strategy and what it means for the future of the company and our stake in it.” In Total’s home country, the picture for offshore wind looks quite different. While Paris remains committed to expanding its world-leading nuclear fleet, a new floating offshore wind farm off France just started pumping electricity onto the grid.
Occidental Petroleum has once again pushed back the opening of the world’s largest carbon removal facility, with executives warning that they’re uncertain how quickly the delay can be resolved. Construction on the direct air capture megaproject in West Texas, known as Stratos, has been mostly complete for months. Last August, the company revised the start date to the end of the year. In February, Occidental said the operations would begin by the second quarter of this year. But in its first-quarter earnings call Wednesday, Richard Jackson, Occidental’s chief operating officer, who will take over for CEO Vicki Hollub when she retires at the end of this month, told analysts “the technology and process unit operations performed as expected.” He said the company had “identified an issue related to non-process components of the facility, unrelated to the technology” and was “currently evaluating the repair timeline and assessing the impact on the operations schedule,” according to Occidental’s official transcript of his remarks. When I emailed the company to ask for more details on what issues and specific components are holding up the project, a spokesperson responded: “We have nothing to offer beyond what Richard said that it’s non-process and we’ll provide an update next quarter.”
Make no mistake, it’s not all doom and gloom for DAC. Colorado and Wyoming this week signed an agreement to work together on carbon storage infrastructure. And a major breakthrough in Kenya “signals a new era” for geological storage of carbon dioxide, so heralded the Carbon Herald.
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The United States has expanded its sanctions on Cuba, forcing the Canadian miner that had been the Caribbean nation’s biggest foreign investor to flee as the Trump administration ramps up its effort to topple the 67-year-old communist regime and reassert Washington’s suzerainty over the island just 90 miles south of Florida. The new sanctions on Thursday, which came days after Trump broadened the U.S. embargo on Cuba, sent the price of shares in Canada’s Sherritt International Corporation tumbling 41% by the time the market closed in North America. For the past 32 years, the company has operated a nickel and cobalt mining operation on the island, providing one of Cuba’s few commercial lifelines into the global economy. While Sherritt said it had not yet been designated for sanctions, a listing “could occur at any time,” the company warned, and banks and other vendors might be “unable or unwilling” to keep supplying the firm. “In any event, the mere issuance of the executive order itself creates conditions that materially alter the corporation’s ability to operate in the ordinary course, including activities related to Sherritt’s Cuban joint venture operations,” Sherritt said in a statement on its website. “This is a massive blow to an already sinking economy,” Ricardo Torres, a leading Cuban-born economist at the American University in Washington, told the Financial Times.
The internal combustion engine is still the profit motor for Volkswagen. But when the world’s second-largest automaker reported its first-quarter earnings last week, the company said its latest electric vehicles are up to 80% as profitable as gasoline-powered alternatives. That’s according to a nugget InsideEVs highlighted this week from the investor update. Once Volkswagen launches its newest modular blueprint for its electric vehicle offerings — known internally as the Scalable Systems Platform, or SSP — the margins are expected to align more closely, said Arno Antlitz, the German auto giant’s chief financial officer. “We expect the margin to be fully comparable only with our future SSP platform,” he said.
Things are looking sunnier for what has long been the weakest sector of the American solar industry. SEG Solar, a Houston-based manufacturer, has announced plans to add 4 gigawatts of module production capacity to its factory in Texas’ largest city, creating a 6-gigawatt facility. The move comes as Elon Musk has vowed to dramatically scale up Tesla’s solar manufacturing capacity and First Solar builds its own 4-gigawatt facility.
And more of the week’s top news around development conflicts.
1. Benton County, Washington – The bellwether for Trump’s apparent freeze on new wind might just be a single project in Washington State: the Horse Heaven wind farm.
2. Box Elder County, Utah – The big data center fight of the week was the Kevin O’Leary-backed project in the middle of the Utah desert. But what actually happened?
3. Durham County, North Carolina – While the Shark Tank data center sucked up media oxygen, a more consequential fight for digital infrastructure is roiling in one of the largest cities in the Tar Heel State.
4. Richland County, Ohio – We close Hotspots on the longshot bid to overturn a renewable energy ban in this deeply MAGA county, which predictably failed.