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Plus cheese and eggs, if you want to go all the way.

It was burrito night — I had some tortillas, salsa, guacamole and red onion in my refrigerator, but all our meat was still frozen, and I didn’t have any beans handy. So I did what any climate reporter with an interest in food systems would do and grabbed a pack of meatless “carne asada” I’d picked up out of curiosity and threw it into the mix. The end result was more “huh” than “wow,” but it held its own — with a little help from some hot sauce.
Growing, raising, processing and transporting food is responsible for roughly a quarter of worldwide greenhouse gas emissions, nearly 60% of which comes from meat production, according to one estimation. If you're concerned about your personal carbon impact, eating less meat is probably on your to-do list. But what if you still like a carne asada burrito? Thankfully, there are plenty of companies working on satisfying your cravings, no animals involved.
There are lots of other food system concerns that won’t make it into this guide — things like agricultural livelihoods, water use, and animal well-being. But if you’re curious about how fake meats work, what they taste like, and their emissions impact, here’s what you’ll want to know.
Ben Kelley, owner and proprietor of Kelley Farms Kitchen, a vegan restaurant in Harpers Ferry, WV. Ben and his wife Sondra started Kelley Farms after going vegan themselves more than a decade ago. The cafe offers a mix of housemade and commercially available meat alternatives.
Ismael Montanez, the program manager at University of California Berkeley’s Alt Meat Lab, where he’s focused on food and sustainability broadly. He is co-founder and former CTO of plant-based lamb company Black Sheep Foods and eats both meat and plant-based replacements.
Andrea Cecchin, senior agriculture and carbon researcher at HowGood, a sustainability ratings company. Cecchin told me he and his family limit the amount of meat they eat but are focused on a wider plant based diet.
It’s a multi-trillion dollar question, frankly. While the worldwide food system is far more complex than individual consumer choices, shifts in demand for food products, especially among higher-income individuals, have created changes, such tripling the price of quinoa during a boom in its popularity in mid-2010s. The U.S. and China’s growing middle classes also drove a spike in pork demand, only to have that growth slow and reverse in the past few years over health concerns.
The plant-based meat alternatives currently available at your grocery store may be highly processed, but they’re different from the cultivated or “lab-grown” meat coming from a new batch of food companies that seek to “grow” meat from scratch on the cellular level. In theory, this would create direct replacements for things like steaks or fish without actually requiring us to raise actual animals. Almost all of these products are still in the research and development stage, however, and none are currently commercially available in the U.S.
Let’s not mince words: There is no such thing as carbon-neutral beef. How to reduce cattle’s climate impact is an area of active research, encompassing supplements and dietary changes, breeding programs to create animals that process food more efficiently, and even methane-sucking gas masks. There are also ranchers committed to using specific grazing techniques that encourage extra retention of soil carbon, thereby offsetting emissions from cows, but “the science is not there yet” on the scale of sequestration needed for fully carbon-neutral meat, Cecchin says. “Climate-friendly” or “low-carbon” meat labels have been criticized for a lack of data transparency and only represent a 10% reduction in beef emissions overall.
The process of making plant-based mock meats is basically the reverse of their animal version, Montanez explained. While meat is made by processing animals into specific cuts or parts, plant-based replacements use protein-packed flours and other ingredients to build the “meat” back up.
Almost all fake red meat products will have a smaller greenhouse gas impact than their animal versions, Cecchin explained. Compared to a beef burger, the alternatives “really bring down the carbon footprint — the amount of water we need to use, and the amount of land that we use” per unit of food. But for other products, the savings are less clear. Chicken, for instance, has a much lower footprint, meaning replacements have to compete against a “very efficient industry and a very efficient meat.”
Processing details are rarely public, making it difficult to declare other meat replacements automatic emissions winners. “It’s really company by company, and could even be year by year as processing efficiencies change,” Cecchin said, adding that he hopes more companies will show clear evidence of their total emissions, including being specific about what they are comparing against.
Fake animal products are also not the same nutritionally as actual animal products, in ways that can be positive or negative depending on your specific dietary needs. An allergy to soy or wheat gluten would immediately knock out a good portion of these options, and my carne asada came with a warning to anyone “sensitive” to fungi.
There are generally more carbs, less fat, and more fiber in substitutes compared to meat, but protein levels can vary widely, and sodium levels can be high (e.g. Impossible burgers have just as much fat and more salt than a 80% lean beef burger of the same size, though zero cholesterol). As with any processed or prepared food, a look at the nutritional label is well worth it.
The experts all enjoyed the big-name beef replacements — Cecchin even said he has chosen Impossible and Beyond patties over regular burgers while eating out. If you have a little more time, though, Kelley said to skip the fast food fake burgers and make them yourself. Making good tasting meat replacements isn’t all that different from cooking meat itself: spices, technique and how it integrates into a meal makes all the difference. This is the case whether he’s using Impossible beef on the restaurant griddle or hand-making a black bean and chickpea patty. “Just like a raw piece of chicken,” he said, “it's about how you cook it.”
Everyone I spoke to said most breaded chicken replacements match their animal versions pretty well — Montanez even called them “most consistently tasty” than their actual meat equivalents, which for him was enough to justify the slight additional cost. He said he thinks Impossible’s chicken nuggets are the “most convincing” — although he also cautioned that he doesn’t eat a lot of breaded meat products in the first place.
Morningstar Farms’ Chik Patty has been a go-to at-home lunch in my house for nearly three decades, primarily because of that consistency and ease of preparation. (The “buffalo” flavor is by far the best, in my opinion.) Kelley uses Gardein’s Chick’n on one of their most popular sandwiches at the restaurant — they’re a big fan of the company and product.
Don’t expect a lot of options for raw chicken alternatives, however. Montanez suspects the economics of competing with relatively cheap meat isn’t attractive to companies, especially when prepared breaded versions, both animal and plant-based, are already popular.
“Emulating the flavor of American chicken is relatively easy and shouldn't be seen as a significant achievement,” Montanez said. “What’s truly interesting is creating a versatile analog that can withstand the same cooking conditions as real chicken.”
Kelley’s favorite meat replacement is Beyond’s bratwurst sausage, made with pea protein and avocado oil. He uses it in a variety of meals at his cafe, as well as to grill up at home, sometimes adding it to pasta.
Steak and other meats that include marbled fats have been a particularly tricky nut to crack for fake meat producers because the traditional extrusion process makes it difficult to capture fat alongside protein. Montanez told me Juicy Marbles has developed a process capable of doing both, which it’s used to create filet and loin products.
Montanez’s favorite fake bacon is only available in a vegan deli in Berkeley, California, but generally both he and Kelley haven’t found full bacon strips that really match the experience of eating bacon. “There's no way to hold it after you cook it without it drying out,” Kelley said. Instead, he likes using soy [bacon] crumbles in various dishes, including in his potato salad.
The pepperoni and other fermented charcuterie from Prime Roots is “quite impressive, even from a meat eater’s perspective,” Montanez told me. The company starts its process with koji, a strain of fungus that has been part of Japanese cuisine for hundreds of years, including in the product of soy sauces and sake.
The deli slices Kelley uses in sandwiches like reubens or Italian hoagies are made with seitan or a mix of seitan and soy, from a variety of companies. But the Tofurky brand (not just turkey) is one of their favorites. “We are always testing new recipes of our own and using reliable and ethical companies that we grew up loving,” he said.
Kelley has yet to be convinced by most seafood replacements, he told me. “All the seafood is kind of just the same as the chicken replacements,” he said. Instead, he uses unripe jackfruit – a common meat replacement with a stringy texture – hearts of palm, and spices to replicate crab cakes. Having an exact match isn’t always a priority for Kelley, who’d rather highlight an ingredient that serves as a replacement rather than calling it by its faux name. His lobster roll replacement is made with hearts of palm, but it’s not “vegan lobster” on his menu, it’s a “hearts of palm” roll.
Texture is a “very difficult thing in seafood,” Montanez said. “I haven't seen anything myself where it is 100% convincing,” but he points out companies like Impact Food that are making plant-based sushi without extrusion or fermentation, currently available in some New York and California restaurants.
Montanez also called out vegan cheese as a category that struggles to match its original, citing texture, not flavor, as the sticking point, especially when it needs to work in a multitude of different recipes. “You might see a vegan cheese that’s okay applied in pieces,” he said, “but it's only as good if you put it in pizza oven temperatures.” An exception to the rule for him is Climax Foods’ blue cheese, which almost pulled off a Judgment of Paris-like upset in a food competition this year before being removed from the running.
Montanez identified Quorn as a brand that’s not trying to replicate meat exactly, but tastes good on its own. The British company has a wide range of no-meat products that feel like they could have a home in a Tesco, from a vegan Yorkshire ham to mini sausage rolls to “picnic eggs.”
Approaches to fake meat taste fall on a spectrum. On one end are companies that try to replicate as closely as possible the taste, texture, and smell of some specific meat product — say, a chicken nugget. (Your personal mileage may vary when it comes to replicas of more complicated meat cuts such as steaks or pork chops.) On the other end are brands that offer a functional, hopefully flavorful replacement for meat in a meal but otherwise aren’t trying to fool anyone.
The former approach involves more materials science and chemistry, Montanez told me. For example, Impossible makes a soy version of a key molecule in meat known as heme and combines it with a carefully calibrated proportion of sugars, fats, and water to induce the Maillard reaction, the process that makes meat brown and form a crust. It’s possible to create a similar meaty flavor profile without heme (Impossible has a patent on their version), but they have their own complications.
“It’s those sugars reacting with the proteins and creating these molecules that ultimately result in a meaty aroma or flavor,” Montanez said.
Kelley Farm’s menu is a good example of the wider ingredient possibilities of meat replacements beyond this approach. In addition to Impossible patties, Beyond brats, and Gardein’s Chick’n, the restaurant also serves deli meat replacements made with seitan (basically textured wheat gluten); folded eggs made from mung beans; BBQ pulled pork made from jackfruit, which mimics that stringy texture naturally (I’ve had both Kelley Farms’ barbeque sandwich and commercial jackfruit BBQ versions and would happily eat either again); and a burger patty that’s their own mix of chickpeas and black beans.
It’s also worth noting that there is a more literal approach to eating a plant-based diet that’s already the standard in many other countries — that is, rather than replacing meat products with fake meat products, just eat more plants. If you feel like you’re missing out on protein, beans, lentils, tofu, and certain grains like quinoa, farro or teff, have high amounts.
Highly engineered meat substitutes are often more expensive than the animal products they are replacing, so if you’re struggling with hunger, have specific dietary requirements, anxiety around food, or an eating disorder, concerns about emissions shouldn’t even enter the picture.
For that matter, just reorienting your approach to eating meat saves a lot of carbon on its own. Kelley told me he reaches for meat replacements when he’s craving something specific, while Cecchin prefers meat alternatives when he’s eating out.
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Representatives Jake Auchincloss and Mark Amodei want to boost “superhot” exploration.
Geothermal is about the only energy topic that Republicans and Democrats can agree on.
“Democrats like clean energy. Republicans like drilling. And everyone likes baseload power that is generated with less than 1% of the land and materials of other renewables,” Massachusetts Representative Jake Auchincloss, a Democrat, told me.
Along with Republican Representative Mark Amodei of Nevada, Auchincloss is introducing the Hot Rock Act on Friday, focusing specifically on “superhot” or “supercritical” geothermal resources, i.e. heat deposits 300 degrees Celsius or above. (Temperatures in large traditional geothermal resources are closer to 240 degrees.)
The bill — of which Heatmap got an exclusive early peek — takes a broad approach to supporting research in the sector, which is currently being explored by startups such as Quaise Energy and Mazama Energy, which in October announced a well at 331 degrees.
There’s superhot rock energy potential in around 13% of North America, modeling by the Clean Air Task Force has found — though that’s mostly around 8 miles below ground. The largest traditional geothermal facility in the U.S. is only about 2.5 miles at its deepest.
But the potential is enormous. “Just 1% of North America’s superhot rock resource has the potential to provide 7.5 terawatts of energy capacity,” CATF said. That’s compared to a little over a terawatt of current capacity.
Auchincloss and Amodei’s bill would direct the Department of Energy to establish “milestone-based research grant programs,” under which organizations that hit goals such as drilling to a specific depth, pressure, or temperature would then earn rewards. It would also instruct the DOE to create a facility “to test, experiment with, and demonstrate hot dry rock geothermal projects,” plus start a workforce training program for the geothermal industry.
Finally, it would grant a categorical exclusion from the National Environmental Policy Act for drilling to explore or confirm geothermal resources, which could turn a process that takes over a year into one that takes just a couple of months.
Geothermal policy is typically a bipartisan activity pursued by senators and House members from the Intermountain West. Auchincloss, however, is a New Englander. He told me that he was introduced to geothermal when he hosted an event in 2022 attended by executives from Quaise, which was born out of the Massachusetts Institute of Technology.
It turned out the company’s pilot project was in Nevada, and “I saw it was in Mark Amodei’s district. And I saw that Mark is on Natural Resources, which is the other committee of jurisdiction. And so I went up to him on the floor, and I was like, Hey there, you know, there's this company announcing this pilot,” Auchincloss told me.
In a statement, Amodei said that “Nevada has the potential to unlock this resource and lead the nation in reliable, clean energy. From powering rural communities and strengthening critical mineral production to meeting the growing demands of data centers, geothermal energy delivers dependable 24/7 power.”
Auchincloss told me that the bill “started from the simple premise of, How do we promote this technology?” They consulted climate and technology experts before reaching consensus on the milestone-based payments, workforce development, and regulatory relief components.
“I didn't have an ideological bent about the right way to do it,” Auchincloss said.
The bill has won plaudits from a range of industry groups, including the Clean Energy Buyers Association and Quaise itself, as well as environmental and policy organizations focused on technological development, like the Institute for Progress, Third Way, and the Breakthrough Institute.
“Our grassroots volunteers nationwide are eager to see more clean energy options in the United States, and many of them are excited by the promise of reliable, around-the-clock clean power from next-generation geothermal energy,” Jennifer Tyler, VP government affairs at the Citizens' Climate Lobby, said in a statement the lawmakers provided to Heatmap. “The Hot Rock Act takes a positive step toward realizing that promise by making critical investments in research, demonstration, and workforce development that can unlock superhot geothermal resources safely and responsibly.”
With even the Trump administration generally pro-geothermal, Auchincloss told me he’s optimistic about the bill’s prospects. “I expect this could command broad bipartisan support,” he said.
Plus a pre-seed round for a moon tech company from Latvia.
The nuclear headlines just keep stacking up. This week, Inertial Enterprises landed one of the largest Series A rounds I’ve ever seen, making it an instant contender in the race to commercialize fusion energy. Meanwhile, there was a smaller raise for a company aiming to squeeze more juice out of the reactors we already have.
Elsewhere over in Latvia, investors are backing an early stage bid to bring power infrastructure to the moon, while in France, yet another ultra-long-duration battery energy storage company has successfully piloted their tech.
Inertia Enterprises, yet another fusion energy startup, raised an eye-popping $450 million Series A round this week, led by Bessemer Venture Partners with participation from Alphabet’s venture arm GV, among others. Founded in 2024 and officially launched last summer, the company aims to develop a commercial fusion reactor based on the only experiment yet to achieve scientific breakeven, the point at which a fusion reaction generates more energy than it took to initiate it.
This milestone was first reached in 2022 at Lawrence Livermore National Laboratory’s National Ignition Facility, using an approach known as inertial confinement fusion. In this method, powerful lasers fire at a small pellet of fusion fuel, compressing it until the extremely high temperature and pressure cause the atoms inside to fuse and release energy. Annie Kritcher, who leads LLNL’s inertial confinement fusion program, is one of the cofounders of Inertia, alongside Twilio co-founder Jeff Lawson and Stanford professor Mike Dunne, who formerly led a program at the lab to design a power plant based on its approach to fusion.
The Inertia team plans to commercialize LLNL’s breakthrough by developing a new fusion laser system it’s calling Thunderwall, which it says will be 50 times more powerful than any laser of its type to date. Inertia isn’t the only player trying to commercialize laser-driven fusion energy — Xcimer Energy, for example, raised a $100 million Series A in 2024 — but with its recent financing, it’s now by far the best capitalized of the bunch.
As Lawson, the CEO of the new endeavor said in the company’s press release, “Our plan is clear: build on proven science to develop the technology and supply chain required to deliver the world’s highest average power laser, the first fusion target assembly plant, and the first gigawatt, utility-scale fusion power plant to the grid.” Great, but how soon can they do it? The goal, he says, is to “make this real within the next decade.”
In more nuclear news, the startup Alva Energy launched from stealth on Thursday with $33 million in funding and a proposal to squeeze more capacity out of the existing nuclear fleet by retrofitting pressurized-water reactors. The round was led by the venture firm Playground Global.
The startup plans to boost capacity by building new steam turbines and electricity generators adjacent to existing facilities, such that plants can stay online during the upgrade. Then when a plant shuts down for scheduled maintenance, Alva will upgrade its steam generator within the nuclear containment dome. That will allow the system to make 20% to 30% more steam, to be handled by the newly built turbine-generator system.
The company estimates that these retrofits will boost each reactor’s output by 200 megawatts to 300 megawatts. Applied across the dozens of existing facilities that could be similarly upgraded, Alva says this strategy could yield roughly 10 new gigawatts of additional nuclear capacity through the 2030s — the equivalent of building about 10 new large reactors.
Biden’s Department of Energy identified this strategy, known as “uprating”, as capable of adding 2 gigawatts to 8 gigawatts of new capacity to the grid. Alva thinks it can go further. The company promises to manage the entire uprate process from ensuring regulatory compliance to the procurement and installation of new reactor components. The company says its upgrades could be deployed as quickly as gas turbines are today — a five- to six-year timeline — at a comparable cost of around $1 billion per gigawatt.
Deep Space Energy, a Latvian space tech startup, has closed a pre-seed funding round to advance its goal of becoming a commercial supplier of electricity for space missions on the moon, Mars, or even deeper into space where sunlight is scarce. The company is developing power systems that convert heat from the natural decay of radioisotopes — unstable atoms that emit radiation as they decay — into electricity.
While it’s still very early-stage, this tech’s first application will likely be backup power for defense satellites. Long term, Deep Space Energy says it “aims to focus on the moon economy” by powering rovers and other lunar installations, supporting Europe’s goal of increasing its space sovereignty by reducing its reliance on U.S. defense assets such as satellites. While radioisotope generators are already used in some space missions, the company says its system requires five times less fuel than existing designs.
Roughly $400,000 of the funding came from equity investments from the Baltic-focused VC Outlast Fund and a Lithuanian angel investor. The company also secured nearly $700,000 from public contracts and grants from the European Space Agency, the Latvian Government, and a NATO program to accelerate innovation with dual-use potential for both defense and commercial applications.
As I wrote a few weeks ago, Form Energy’s iron-air battery isn’t the only player targeting 100-plus hours of low-cost energy storage. In that piece, I highlighted Noon Energy, a startup that recently demoed its solid-oxide fuel cell system. But there’s another company aiming to compete even more directly with Form by bringing its own iron-air battery to the European market: Ore Energy. And it just completed a grid-connected pilot, something Form has yet to do.
Ore piloted its 100-hour battery at an R&D center in France run by EDF, the state-owned electric utility company. While the company didn’t disclose the battery’s size, it said the pilot demonstrated its ability to discharge energy continuously for about four days while integrating with real-world grid operations. The test was supported by the European Union’s Storage Research Infrastructure Eco-System, which aims to accelerate the development of innovative storage solutions, and builds on the startup’s earlier grid-connected installation at a climate tech testbed in the Netherlands last summer.
Founded in 2023, Ore plans to scale quickly. As Bas Kil, the company’s business development lead, told Latitude Media after its first pilot went live, “We’re not planning to do years and years of pilot-scale [projects]; we believe that our system is now ready for commercial deployment.” According to Latitude, Ore aims to reach 50 gigawatt-hours of storage per year by 2030, an ambitious goal considering its initial grid-connected battery had less than one megawatt-hour of capacity. So far, the company has raised just shy of $30 million to date, compared to Form’s $1.2 billion.
Battery storage manufacturer and virtual power plant operator Sonnen, together with the clean energy financing company Solrite, have launched a Texas-based VPP composed exclusively of home batteries. They’re offering customers a Solrite-owned 60-kilowatt-hour battery for a $20 monthly fee, in exchange for a fixed retail electricity rate of 12 cents per kilowatt-hour — a few cents lower than the market’s average — and the backup power capability inherent to the system. Over 3,000 customers have already enrolled, and the companies are expecting up to 10,000 customers to join by year’s end.
The program is targeting Texans with residential solar who previously sold their excess electricity back to the grid. But now that there’s so much cheap, utility-scale solar available in Texas, electricity retailers simply aren’t as incentivized to offer homeowners favorable rates. This has left many residents with “stranded” solar assets, turning them into what the companies call “solar orphans” in need of a new way to make money on their solar investment. Customers without rooftop solar can participate in the program as well, though they don’t get a catchy moniker.
Current conditions: New Orleans is expecting light rain with temperatures climbing near 90 degrees Fahrenheit as the city marks the 20th anniversary of Hurricane Katrina • Torrential rains could dump anywhere from 8 to 12 inches on the Mississippi Valley and the Ozarks • Japan is sweltering in temperatures as high as 104 degrees.
President Donald Trump has done what he didn’t dare attempt during his first term, repealing the finding that provided the legal basis for virtually all federal regulations to curb greenhouse gas emissions. By rescinding the 2009 “endangerment finding,” which established that planet-heating emissions harm human health and therefore qualify for restrictions under the Clean Air Act, the Trump administration hopes to unwind all rules on pollution from tailpipes, trucks, power plants, pipelines, and drilling sites all in one fell swoop. “This is about as big as it gets,” Trump said alongside Environmental Protection Agency Administrator Lee Zeldin at a White House event Thursday.
The repeal, which is sure to face legal challenges, opens up what Reuters called a new front in the legal wars over climate change. Until now, the Supreme Court had declined to hear so-called public nuisance cases brought by activists against fossil fuel companies on the grounds that the legal question of emissions was being sorted out through federal regulations. By eliminating those rules outright, litigants could once again have new standing to sue over greenhouse gas emissions. To catch up on the endangerment finding in general, Heatmap’s Robinson Meyer and Emily Pontecorvo put together a handy explainer here.
A bill winding its way through Ohio’s Republican-controlled state legislature would put new restrictions on development of wind and solar projects. The state already makes solar and wind developers jump over what Canary Media called extra hurdles that “don’t apply to fossil-fueled or nuclear power plants, including counties’ ability to ban projects.” For example, siting authorities defer to local opposition on renewable energy but “grant opponents little say over where drilling rigs and fracking waste can go.”
The new legislation would make it state policy “in all cases” for new power plants to “employ affordable, reliable, and clean energy sources.” What qualifies as “affordable, reliable, and clean”? Pretty much everything except wind and solar, potentially creating a total embargo on the energy sources at any utility scale. The legislation mirrors a generic bill promoted to states by the American Legislative Exchange Council, a right-wing policy shop.
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China’s carbon dioxide emissions fell by 1% in the last three months of 2025, amounting to a 0.3% drop for the full year. That’s according to a new analysis by Carbon Brief. The decline extends the “flat or falling” trend in China’s emissions that started in March 2024 and has now lasted nearly two years. Emissions from fossil fuels actually increased by 0.1%, but pollution from cement plunged 7%. While the grid remains heavily reliant on coal, solar output soared by 43% last year compared to 2024. Wind grew by 14% and nuclear by 8%. All of that allowed coal generation to fall by 1.9%.
At least one sector saw a spike in emissions: Chemicals, which saw emissions grow 12%. Most experts interviewed in Heatmap’s Insiders Survey said they viewed China has a climate “hero” for its emissions cuts. But an overhaul to the country’s electricity markets yielded a decline in solar growth last year that’s expected to stretch into this year.
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Rivian Automotive’s shares surged nearly 15% in after-hours trading Thursday when the electric automaker announced earnings that beat Wall Street’s expectations. While it cautioned that it would continue losing money ahead of the launch of its next-generation R2 mid-size SUV, the company said it would deliver 62,000 to 67,000 vehicles in 2026, up 47% to 59% compared with 2025. Rivian CEO RJ Scaringe told CNBC that the R2 would make up the “majority of the volume” of the business by the end of next year. He told investors 2025 was a “foundational year” for the company, but that 2026 would be “an inflection point.”
Another clean energy company is now hot on the stock market. SOLV Energy, a solar and battery storage construction contractor, secured market capitalization eclipsing $6 billion in the two days since it started trading on the Nasdaq. The company, according to Latitude Media, is “the first pure-play solar and storage” company in the engineering, procurement, and construction sector of the industry to go public since 2008.

Israel has never confirmed that it has nuclear weapons, but it’s widely believed to have completed its first operating warhead in the 1960s. Rather than give up its strategic ambiguity over its arsenal, Israel instead forfeited the development of civilian nuclear energy, which would have required opening up its weapons program to the scrutiny of regulators at the United Nations’ International Atomic Energy Agency. That apparently won’t stop the U.S. from building a reactor in Israel to power a joint industrial complex. Washington plans to develop a campus with an advanced microchip factory and data centers that would be powered by a small modular reactor, NucNet reported. So-called SMRs have yet to be built at a commercial scale anywhere in the world. But the U.S. government is betting that smaller, less powerful reactors purchased in packs can bring down the cost of building nuclear plants and appeal to fearful skeptics as a novel spin on the older technology.
In reality, SMRs are based on a range of designs, some of which closely mirror traditional, large-scale reactors but for the power output, and a growing chorus of critics say the economies of scale are needed to make nuclear projects pencil out. But the true value of SMRs is for off-grid power. As I wrote last week for Heatmap, if the U.S. government wants it for some national security concern, the price doesn’t matter as much.
Of all the fusion companies racing to build the first power plant, Helion’s promise of commercial electricity before the end of the decade has raised eyebrows for its ambition. But the company has hit a milestone. On Friday morning, Helion’s Polaris prototype became the first privately developed fusion reactor to use a deuterium-tritium fuel source. The machine also set a record with plasma temperatures 150 million degrees Celsius, smashing its own previous record of 100 million degrees with an earlier iteration of Helion’s reactor.