California-based Karman Industries "says it has developed a cooling system that uses SpaceX rocket engine technology to rein in the environmental impact of data centers," reports the Los Angeles Times, "chilling them with less space, less power and no water." Karman has developed a cooling system similar to the heat pumps in the average home, except its pumps use liquid carbon dioxide as refrigerant, which is circulated using rocket engine technology rather than fans. The company's efficient pumps can reduce the space required for data center cooling equipment by 80%. Over the years, data centers have used fans and air conditioning to blow cold air on the chips. Bigger facilities pass cold liquid through tubes near the chips to absorb the heat. This hot liquid is sent outside to a cooling yard, where sprawling networks of pipes use as much water as a city of 50,000 people to remove the heat. A 50 megawatt data center also uses enough electricity to power a mid-sized city... Cooling systems account for up to 40% of a data center's power consumption and an average midsized data center consumes more than 35,000 gallons of water per day... U.S. data centers will consume about 8% of all electricity in the country by 2030, according to the International Energy Agency... The cooling systems are projected to use up to 33 billion gallons of water by 2028 per year... To serve this seemingly insatiable market, Karman has developed a rotating compressor that spins at 30,000 revolutions per minute — nearly 10 times faster than traditional compressors — to move heat... About a third of Karman's 23-person team came from SpaceX or Rocket Lab, and they co-opted technologies from aerospace engineering and electric vehicles to design the mechanics for the high-speed motors. The system uses a special type of carbon dioxide under high pressure to transfer heat from the data center to the outside air. Depending on the conditions, it can do the same amount of cooling using less than half the energy. Karman's heat pump can either reject heat to air, or route it into extra cooling, or even power generation. The company "recently raised $20 million," according to the article, "and expects to start building its first compressors in Long Beach later this year...."

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Can Aircela's machine "create gasoline using little more than electricity and the air that we breathe"? Jalopnik reports... The Aircela machine works through a three-step process. It captures carbon dioxide directly from the air... The machine also traps water vapor, and uses electrolysis to break water down into hydrogen and oxygen... The oxygen is released, leaving hydrogen and carbon dioxide, the building blocks of hydrocarbons. This mixture then undergoes a process known as direct hydrogenation of carbon dioxide to methanol, as documented in scientific papers. Methanol is a useful, though dangerous, racing fuel, but the engine under your hood won't run on it, so it must be converted to gasoline. ExxonMobil has been studying the process of doing exactly that since at least the 1970s. It's another well-established process, and the final step the Aircela machine performs before dispensing it through a built-in ordinary gas pump. So while creating gasoline out of thin air sounds like something only a wizard alchemist in Dungeons & Dragons can do, each step of this process is grounded in science, and combining the steps in this manner means it can, and does, really work. Aircela does not, however, promise free gasoline for all. There are some limitations to this process. A machine the size of Aircela's produces just one gallon of gas per day... The machine can store up to 17 gallons, according to Popular Science, so if you don't drive very much, you can fill up your tank, eventually... While the Aircela website does not list a price for the machine, The Autopian reports it's targeting a price between $15,000 and $20,000, with hopes of dropping the price once mass production begins. While certainly less expensive than a traditional gas station, it's still a bit of an investment to begin producing your own fuel. If you live or work out in the middle of nowhere, however, it could be close to or less than the cost of bringing gas to you, or driving all your vehicles into a distant town to fill up. You're also not limited to buying just one machine, as the system is designed to scale up to produce as much fuel as you need. The main reason why this process isn't "something for nothing" is that it takes twice as much electrical energy to produce energy in the form of gasoline. As Aircela told The Autopian " Aircela is targeting >50% end to end power efficiency. Since there is about 37kWh of energy in a gallon of gasoline we will require about 75kWh to make it. When we power our machines with standalone, off-grid, photovoltaic panels this will correspond to less than $1.50/gallon in energy cost." Thanks to long-time Slashdot reader Quasar1999 for sharing the news.

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Small modular nuclear reactors (or SMRs) are touted as "cheaper, safer, faster to build and easier to finance" than conventional nuclear reactors, reports CNN. Amazon has invested in X-Energy, and earlier this month, Meta announced a deal with Oklo, and in Michigan last month, Holtec began the long formal licensing process for two SMRs with America's Nuclear Regulatory Commission next to a nuclear plant it hopes to reactive. (And in 2024, California-based Kairos Power broke ground in Tennessee on a SMR "demo" reactor.) But "The reality, as ever, is likely to be messier and experts are sounding notes of caution..." All the arguments in favor of SMRs overlook a fundamental issue, said Edwin Lyman, director of nuclear power safety at the Union of Concerned Scientists: They are too expensive. Despite all the money swilling around the sector, "it's still not enough," he told CNN. Nuclear power cannot compete on cost with alternatives, both fossil fuels and increasingly renewable energy, he said." Some SMRs also have an issue with fuel. The more unconventional designs, those cooled by salt or gas, often require a special type of fuel called high-assay low-enriched uranium, known as HALEU (pronounced hay-loo). The amounts available are limited and the supply chain has been dominated by Russia, despite efforts to build up a domestic supply. It's a major risk, said Nick Touran [a nuclear engineer and independent consultant]. The biggest challenge nuclear has is competing with natural gas, he said, a "luxury, super expensive fuel may not be the best way." There is still stigma around nuclear waste, too. SMR companies say smaller reactors mean less nuclear waste, but 2022 research from Stanford University suggested some SMRs could actually generate more waste, in part because they are less fuel efficient... As companies race to prove SMRs can meet the hype, experts appear to be divided in their thinking. For some, SMRs are an expensive — and potentially dangerous — distraction, with timelines that stretch so far into the future they cannot be a genuine answer to soaring needs for clean power right now. Nuclear engineering/consultant Touran told CNN the small reactors are "a technological solution to a financial problem. No venture capitalists can say, like, 'oh, sure, we'll build a $30 billion plant.' But, if you're down into hundreds of millions, maybe they can do it."

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Slashdot reader Mr. Dollar Ton summarizes this article from Bloomberg: According to a new report from think tank "Ember", the availability of cheap green tech can have developing countries profit from earlier investment and skip steps in the transition from fossil to alternatives. India is put forward as an example. While China's rapid electrification has been hailed as a miracle, by some measures, India is moving ahead faster than China did when it was at similar levels of economic development. It's an indication that clean electricity could be the most direct way to boost growth for other developing economies. That's mainly because India has access to solar panels and electric cars at a much lower price than China did about a decade ago. Chinese investments lowered the costs of what experts call "modular technologies" — the production of each solar panel, battery cell and electric car enables engineers to learn how to make it more efficiently. The think tank's team even argues "that countries such as India, which don't have significant domestic fossil-fuel reserves, will become 'electrostates' that meet most of their energy needs through electricity generated from clean sources," according to the article: No country is an electrostate yet, [says Ember strategist Kingsmill Bond], but countries are increasingly turning to green electricity to power their economies. Nations that are less developed than India will see even more advantages as the cost of electricity technologies, from solar panels and electric vehicles to battery components and minerals, continue to fall. Neither India nor China is going electric purely to cut emissions or meet climate targets, says Bond. They're doing so because it makes economic sense, particularly for India, which imports more than 40% of its primary energy in the form of coal, oil and gas, according to the International Energy Agency. "To grow and have energy independence, India needs to reduce the terrible burden of fossil-fuel imports worth $150 billion each year," said Bond. "India needs to find other solutions...." [I]f countries like India find ways to grow electrotech manufacturing without absolute dependence on Chinese equipment, electrification could speed up further. With the U.S. and Europe continuing to add exclusions for Chinese-linked electrotech, countries like India will have an incentive to invest in their own manufacturing capacity. "We are probably at a moment of peak Chinese dominance in the electrotech system, as the rest of the world starts to wake up and realize that this is the energy future," he said.

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Wind and solar power overtook fossil fuels last year as a source of electricity in the EU for the first time, a new report found. Semafor adds: The milestone was hit largely thanks to a rise in solar power, which generated a record 13% of electricity in the EU, according to Ember. Together, wind and solar hit 30% of EU electricity generation, edging out fossil fuels at 29%. The shift is especially important with the bloc's alternative to Russian LNG -- Washington -- becoming increasingly unreliable and willing to weaponize economic tools. The US Commerce Secretary threw shade at the bloc's renewable push during Davos, warning that China uses net zero goals to make allies "subservient" by controlling battery and critical mineral supply chains. Still, renewables now provide nearly half of EU power, with wind and solar outpacing all fossil sources in more than half of member countries. "The stakes of transitioning to clean energy are clearer than ever," the Ember report's author said.

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A federal judge has temporarily lifted the Trump administration's suspension of the Coastal Virginia Offshore Wind, allowing construction on the largest offshore wind project in the U.S. to resume. CNBC reports: Judge Jamar Walker of the U.S. District Court for the Eastern District of Virginia granted Dominion's request for a preliminary injunction Friday. Dominion called the Trump suspension "arbitrary and illegal" in its lawsuit. "Our team will now focus on safely restarting work to ensure CVOW begins delivery of critical energy in just weeks," a Dominion spokesperson told CNBC in a statement Friday. "While our legal challenge proceeds, we will continue seeking a durable resolution of this matter through cooperation with the federal government," the spokesperson said. Dominion said in December that "stopping CVOW for any length of time will threaten grid reliability for some of the nation's most important war fighting, AI and civilian assets." Coastal Virginia Offshore Wind is a 176-turbine project that would provide enough power for more than 600,000 homes, according to Dominion. It is scheduled to start dispatching power by the end of the first quarter of 2026. In December, the Trump administration paused the leases on all five offshore wind sites currently under construction in the U.S., blaming the decisions on a classified report from the Department of Defense.

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The Trump administration urged the largest electricity grid in the U.S. to make big tech companies pay for new power plants to support the surging electricity demand from AI and data centers. CNBC reports: Electricity prices have exploded in recent years on PJM Interconnection due in part to the data centers that tech companies are building to train and power artificial intelligence. The PJM grid serves more than 65 million people across 13 states and Washington, D.C. Its service area includes northern Virginia, the largest data center market in the world. The Trump administration and several states signed a pact that calls for tech companies to pay for new power plants built in PJM. Leading tech companies have agreed to fund $15 billion of new generation for the grid, according to an administration statement. The Trump administration and the states urged PJM to hold an emergency capacity auction to procure this power, according to the Department of Energy. PJM should also cap the amount that existing power plants can charge in the grid's capacity market to protect ratepayers, according to the administration. "We have to get out from underneath this bureaucratic system that we have in the regional grid operators and we've got to allow markets to work," said Interior Secretary Doug Burgum at the White House. "One of the ways markets can work is to have the hyperscalers actually rapidly building power."

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The UK government has awarded guaranteed electricity prices to offshore wind projects totaling 8.4 GW in a bid to revive wind development, attract nearly $30 billion in private investment, and stabilize energy costs. The New York Times reports: On Wednesday, the British government said that it would provide guaranteed electricity prices for a group of wind farms off England, Scotland and Wales that would, once built, provide power for 12 million homes. The 8.4 gigawatts, a power capacity measure, that won support is the largest amount that has been achieved in an auction in Britain. The government said that these wind farms could lead to 22 billion pounds, or almost $30 billion, in private investment. The government holds regular auctions, roughly on an annual basis. Results have been improving after a failed auction in 2023 that produced no bids from developers. The government almost doubled its original budget for the recent auction to about 1.8 billion pounds per year. To encourage renewable energy sources like offshore wind, Britain offers a price floor to provide certainty for investors. The average floor, or strike price, from the auction on Wednesday was about 91 pounds, or $122 per megawatt-hour, in 2024 prices, up about 11 percent from the last auction. Over the past year the wholesale price for electricity in Britain was on average about 79 pounds, according to Drax Electric Insights, a market analysis website. The bulk of the planned wind farms that won price supports will be off eastern England. Support will also go to wind farms off Scotland and Wales. The British government wants at least 95 percent of the country's electricity generation to come from clean sources by 2030. Political consensus for ambitious climate goals is eroding in Britain, but the government of Prime Minister Keir Starmer believes that an enormous bet on clean energy, especially offshore wind, is necessary to protect consumers from volatile fossil fuel prices.

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America's largest power-grid operator, PJM, which delivers electricity to 67 million people across a 13-state region from New Jersey to Kentucky, is approaching a supply crisis as AI data centers in Northern Virginia's "Data Center Alley" consume electricity at an unprecedented rate. The nonprofit expects demand to grow by 4.8% annually over the next decade. Mark Christie, former chairman of the Federal Energy Regulatory Commission, said the reliability risk that was once "on the horizon" is now "across the street." Dominion Energy, the utility serving parts of Virginia, has received requests from data-center developers requiring more than 40 gigawatts of electricity -- roughly twice its Virginia network capacity at the end of 2024. Older power plants are going out of service faster than new ones can be built, and the grid could max out during periods of high demand, forcing rolling blackouts during heat waves or deep freezes. In November, efforts to establish new rules for data centers stalled when PJM, tech companies, power suppliers and utilities couldn't agree on a plan. Monitoring Analytics, the firm that oversees the market, warned that unless data centers bring their own power supply, "PJM will be in the position of allocating blackouts rather than ensuring reliability."

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An anonymous reader quotes a report from CNBC: President Donald Trump said in a social media post on Monday that Microsoft will announce changes to ensure that Americans won't see rising utility bills as the company builds more data centers to meet rising artificial intelligence demand. "I never want Americans to pay higher Electricity bills because of Data Centers," Trump wrote on Truth Social. "Therefore, my Administration is working with major American Technology Companies to secure their commitment to the American People, and we will have much to announce in the coming weeks." [...] Trump congratulated Microsoft on its efforts to keep prices in check, suggesting that other companies will make similar commitments. "First up is Microsoft, who my team has been working with, and which will make major changes beginning this week to ensure that Americans don't 'pick up the tab' for their POWER consumption, in the form of paying higher Utility bills," Trump wrote on Monday. Utilities charged U.S. consumers 6% more for electricity in August from a year earlier, including in states with many data centers, CNBC reported in November. Microsoft is paying close to attention to the impact of its data centers on local residents. "I just want you to know we are doing everything we can, and I believe we're succeeding, in managing this issue well, so that you all don't have to pay more for electricity because of our presence," Brad Smith, the company's president and vice chair, said at a September town hall meeting in Wisconsin, where Microsoft is building an AI data center. While Microsoft is moving forward with some facilities, the company withdrew plans for a data center in Caledonia, Wisconsin, amid loud opposition to its efforts there. The project would would have been located 20 miles away from a data center in the village of Mount Pleasant.

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"Scientists in China have made a breakthrough with fusion energy that could finally overcome one of the most stubborn barriers to realising the next-generation energy source," reports the Independent: A team from the Chinese Academy of Sciences (CAS) said its experimental nuclear reactor, dubbed the 'artificial Sun', achieved a plasma density that was previously thought impossible... Through a new process called plasma-wall self organisation, the CAS researchers were able to keep the plasma stable at unprecedented density levels. By pushing plasma density well past long-standing empirical limits, the researchers said fusion ignition can be achieved with far higher energy outputs. "The findings suggest a practical and scalable pathway for extending density limits in tokamaks and next-generation burning plasma fusion devices," said Professor Ping Zhu from Huazhong University of Science and Technology, who so-led the research. Professor Zhu's team now plan to apply this new method on the EAST reactor to confirm that it will work under high-performance plasma conditions. The latest breakthrough was detailed in the journal Science Advances in a study titled 'Accessing the density-free regime with ECRH-assisted ohmic start-up on EAST'.

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The humble power bank has transformed from a simple pocket-sized battery into a feature-laden gadget that now sometimes includes screensavers, Bluetooth connectivity and built-in Wi-Fi hotspots. The Verge's Thomas Ricker highlighted the $270 EcoFlow Rapid Pro X Power Bank 27k at CES 2026 as a prime offender -- a device he declared "too expensive, too big, too slow, and too heavy." Its giant display takes 30 seconds to wake from sleep, plays swirly graphics and blinking eyeballs, and requires a screensaver while slowly draining the battery it's meant to preserve. The feature creep is industry-wide. Anker no longer lists a display-less model in its 20,000mAh range, and both companies sell proprietary desk chargers. Basic alternatives exist -- Anker's PowerCore 10k runs $26 -- but they're becoming harder to find.

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America's electric car subsidies expired at the end of September, notes Bloomberg. Yet in those last three months, "while fully electric cars and trucks made up 10% of all auto sales in the US... another 15% of transactions were for hybrid vehicles." The EV market is slowing in the U.S., but analysts expect hybrid sales to continue accelerating. CarGurus Inc., a digital listings platform that covers most of the US auto market, predicts nearly one in six new cars next year will be a hybrid, as automakers green-light more and better machines with the technology. And though these cars and trucks will still burn gas, they will quietly move the needle on both transportation emissions and the transition to fully electric cars and trucks... CarGurus calls hybrids the success story of 2025. Indeed, the fastest-selling car in the country this year has been the Hyundai Palisade Hybrid; it sat on lots for fewer than 14 days on average... While carmakers have struggled to turn a profit on fully electric vehicles, analysts say their investments in batteries and electric motors are helping them sell more and better hybrid machines. It's also increasingly difficult to discern a hybrid from a solely gas-powered model, said Scott Hardman, assistant director of the Electric Vehicle Research Center at the University of California at Davis. Carmakers today often don't even label a hybrid as such. Consider Toyota's RAV4, one of the best-selling vehicles in America. The 2026 version of the SUV comes in six different variants, all of which include an electric motor and a gas tank. "A hybrid is just a regular car now," Hardman said. "You can buy one by accident...." While not as clean as an electric vehicle, hybrids offer sneaky carbon cuts as well. Americans, on average, drive about 38 miles a day, which requires about one gallon of gas in most basic hybrids. Contemporary plug-in hybrids, which can run on all-battery power, can cover almost that entire range without the gas engine kicking in. And a small crowd of cars will do even better, stretching their batteries well over 40 miles per charge. All told, hybridization can reduce the carbon dioxide emissions of a vehicle by roughly 20% to 30%, according to the International Council on Clean Transportation. Some interesting statistics from the article: By 2030 Ford expects fully or partially electrified vehicles will represent half its global sales. Toyota has already reached 50% ("in part thanks to all those hybrid RAV4s"). Honda is "basing its entire business on hybrids until at least 2030." Around one-third of America's hybrid drivers "transition to a fully electric vehicle when they next switch cars." In September 57% of America's car shoppers "were considering a fully electric auto, according to JD Power. However, among hybrid households, that share was almost 70%."

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The New York Times checks in on U.S. university researchers and start-ups trying to create domestic rare-earth processing facility: There is too little money to be made in rare earths for the elements to be of much interest to mining giants, so the challenge of reestablishing a domestic industry has fallen to small companies like Phoenix Tailings, a Boston-area startup that runs the metal-making plant in Exeter, New Hampshire. A handful of other companies in the United States are processing rare earths in small quantities, including MP Materials, which owns a mine in Mountain Pass, California, and recently began producing rare-earth metal in Fort Worth, Texas. Similar efforts are underway in Europe and Asia. "It's small volumes of low-value materials that are very expensive to process," said Elsa Olivetti, a materials science and engineering professor at the Massachusetts Institute of Technology. "Meaning it's hard to make money." Phoenix Tailings' New Hampshire operation is about 2 months old, housed in a converted medical device plant. The company buys metric-ton bags of powder — a mixture of neodymium and praseodymium bound with oxygen — from mining and refining companies in the United States, South America and Australia. It funnels that flour-like material into a drying oven and eventually into furnaces that heat it to the temperature of volcanic lava. This circuit takes up less than 15,000 square feet and is designed to generate no emissions other than those associated with the electricity Phoenix Tailings uses. The closed-loop design distinguishes this process from the more energy-intensive techniques used in China, where workers scoop up molten metal with ladles. That approach releases perfluorocarbons, potent greenhouse gases that do not break down easily. In late 2024 the company was three weeks from bankruptcy — but it's recently been valued at $189 million.

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An anonymous reader shared this report from Electrek: Tesla has released a new video showing a Tesla Semi truck charging at a massive 1.2 megawatts (MW), finally giving us a clear look at the charging speeds that will enable long-haul electric trucking...> Tesla claimed the Semi would be able to charge 70% of its range in 30 minutes. For a truck with a 500-mile range and an estimated battery pack of around 800-900 kWh, that requires an incredibly high power output, well beyond the 250 kW or even 350 kW we see on passenger EVs in North America. Today, the official Tesla Semi account on X released a video showing exactly that. In the video, Tesla engineers are seen monitoring a charging session where the power output climbs to a peak of 1.2 MW (1,206 kW). This is consistent with the capabilities Tesla announced for its new V4 Cabinet architecture earlier this year. The V4 cabinets are designed to support 400V-1000V vehicle architectures and can deliver up to 500 kW for cars (like the Cybertruck) and up to 1.2 MW for the Semi. There is some information missing from the video. For example, we don't see the state-of-charge of the truck, so we don't at what battery percentage Tesla Semi can achieve and maintain this charge rate. Peak speed is one thing, but sustaining that power without overheating the pack or the cable is the real challenge. The liquid-cooled charging cable and the immersion-cooled connector (part of the Megawatt Charging System or a high-power proprietary Tesla solution, though Tesla has been leaning toward MCS compatibility) seem to be doing their job.... This comes just as Tesla is gearing up for volume production of the Semi at its new factory expansion near Gigafactory Nevada. The automaker is targeting a start of production in the first half of 2026 and a ramp up to volume production in the second half.

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