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News Source Slashdot:Hardware
Why Is China Building So Many Coal Plants Despite Its Solar and Wind Boom?
Long-time Slashdot reader schwit1 shared this article from the Associated Press:Even as China's expansion of solar and wind power raced ahead in 2025, the Asian giant opened many more coal power plants than it had in recent years — raising concern about whether the world's largest emitter will reduce carbon emissions enough to limit climate change. More than 50 large coal units — individual boiler and turbine sets with generating capacity of 1 gigawatt or more — were commissioned in 2025, up from fewer than 20 a year over the previous decade, a research report released Tuesday said. Depending on energy use, 1 gigawatt can power from several hundred thousand to more than 2 million homes. Overall, China brought 78 gigawatts of new coal power capacity online, a sharp uptick from previous years, according to the joint report by the Centre for Research on Energy and Clean Air, which studies air pollution and its impacts, and Global Energy Monitor, which develops databases tracking energy trends. "The scale of the buildout is staggering," said report co-author Christine Shearer of Global Energy Monitor. "In 2025 alone, China commissioned more coal power capacity than India did over the entire past decade." At the same time, even larger additions of wind and solar capacity nudged down the share of coal in total power generation last year. Power from coal fell about 1% as growth in cleaner energy sources covered all the increase in electricity demand last year. China added 315 gigawatts of solar capacity and 119 gigawatts of wind in 2025, according to statistics from the government's National Energy Administration... The government position is that coal provides a stable backup to sources such as wind and solar, which are affected by weather and the time of day. The shortages in 2022 resulted partly from a drought that hit hydropower, a major energy source in western China... The risk of building so much coal-fired capacity is it could delay the transition to cleaner energy sources [said Qi Qin, an analyst at the Centre for Research on Energy and Clean Air and another co-author of the report]... Political and financial pressure may keep plants operating, leaving less room for other sources of power, she said. The report urged China to accelerate retirement of aging and inefficient coal plants and commit in its next five-year plan, which will be approved in March, to ensuring that power-sector emissions do not increase between 2025 and 2030.
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Are Big Tech's Nuclear Construction Deals a Tipping Point for Small Modular Reactors?
Fortune reports on "a watershed moment" in American's nuclear power industry:In January, Meta partnered with Gates' TerraPower and Sam Altman-backed Oklo to develop about 4 gigawatts of combined SMR projects — enough to power almost 3 million homes — for "clean, reliable energy" both for Meta's planned Prometheus AI mega campus in Ohio and beyond. Analysts see Meta as the start of more Big Tech nuclear construction deals — not just agreements with existing plants or restarts such as the now-Microsoft-backed Three Mile Island. "That was the first shot across the bow," said Dan Ives, head of tech research for Wedbush Securities, of the Meta deals. "I would be shocked if every Big Tech company doesn't make some play on nuclear in 2026, whether a strategic partnership or acquisitions." Ives pointed out there are more data centers under construction than there are active data centers in the U.S. "I believe clean energy around nuclear is going to be the answer," he said. "I think 2030 is the key threshold to hit some sort of scale and begin the next nuclear era in the United States." Smaller SMR reactors can be built in as little as three years instead of the decade required for traditional large reactors. And they can be expanded, one or two modular reactors at a time, to meet increasingly greater energy demand from 'hyperscalers,' the companies that build and operate data centers. "There's major risk if nuclear doesn't happen," Oklo chairman and CEO Jacob DeWitte told Fortune, citing the need for emission-free power and consistent baseload electricity to meet skyrocketing demand. "The hyperscalers, as the ultimate consumers of power are, are looking at the space and seeing that the market is real. They can play a major role in helping make that happen," DeWitte said, speaking in his fast-talking, Silicon Valley startup mode.
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The World's First Sodium-Ion Battery in Commercial EVs - Great at Low Temperatures
Long-time Slashdot reader Geoffrey.landis shared this report from InsideEVs:Chinese battery giant CATL and automaker Changan Automobile are preparing to put the world's first passenger car powered by sodium-ion batteries on public roads by mid-2026. And if the launch is successful, it could usher in an era where electric vehicles present less of a fire risk and can better handle extreme temperatures. The CATL Naxtra sodium-ion battery will debut in the Changan Nevo A06 sedan, delivering an estimated range of around 400 kilometers (249 miles) on the China Light-Duty Test Cycle. From there, the battery will roll out across Changan's broader portfolio, including EVs from Avatr, Deepal, Qiyuan and Uni, the company said. "The launch represents a major step in the industry's transition toward a dual-chemistry ecosystem, where sodium-ion and lithium-ion batteries complement each other to meet diverse customer needs," CATL said in a press release... It delivers 175 watt-hours per kilogram of energy density, which is lower than nickel-rich chemistries but roughly on par with lithium ion phosphate batteries... Where the Naxtra battery really stands out, however, is cold-weather performance. CATL says its discharge power at -30 degrees Celsius (-22 degrees Fahrenheit) is three times higher than that of lithium ion phosphate batteries.
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Free Bi-Directional EV Chargers Tested to Improve Massachusetts Power Grid
Somewhere on America's eastern coast, there's an economic development agency in Massachusetts promoting green energy solutions. And Monday the Massachusetts Clean Energy Center (or MassCEC) announced "a first-of-its-kind" program to see what happens when they provide free electric vehicle chargers to selected residents, school districts, and municipal projects. The catch? The EV chargers are bi-directional, able "to both draw power from and return power to the grid..." The program hopes to "accelerate the adoption of V2X technologies, which, at scale, can lower energy bills by reducing energy demand during expensive peak periods and limiting the need for new grid infrastructure." This functionality enables EVs, including electric buses and trucks, to provide backup power during outages and alleviate pressure on the grid during peak energy demand. These bi-directional chargers will enable EVs to act as mobile energy storage assets, with the program expected to deliver over one megawatt of power back to the grid during a demand response event — enough to offset the electricity use of 300 average American homes for an hour. "Virtual Power Plants are the future of our electrical grid, and I couldn't be more excited to see this program take off," said Energy and Environmental Affairs Secretary Rebecca Tepper. "We're putting the power of innovation directly in the hands of Massachusetts residents. Bi-directional charging unlocks new ways to protect communities from outages and lower costs for families and public fleets...." Additionally, the program will help participants enroll in existing utility programs that offer compensation to EV owners who supply power back to the grid during peak times, helping participants further lower their electricity costs. By leveraging distributed energy resources and reducing grid strain, this program positions Massachusetts as a national leader in clean energy innovation.
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Moltbook, Reddit, and The Great AI-Bot Uprising That Wasn't
Monday security researchers at cloud-security platform Wiz discovered a vulnerability that allowed anyone to post to the bots-only social network Moltbook — or even edit and manipulate other existing Moltbook posts. "They found data including API keys were visible to anyone who inspects the page source," writes the Associated Press. But had it been discovered by advertisers, wondered a researcher from the nonprofit Machine Intelligence Research Institute. "A lot of the Moltbook stuff is fake," they posted on X.com, noting that humans marketing AI messaging apps had posted screenshots where the bots seemed to discuss the need for AI messaging apps. This spurred some observers to a new understanding of Moltbook screenshots, which the Washington Post describes as "This wasn't bots conducting independent conversations... just human puppeteers putting on an AI-powered show." And their article concludes with this observation from Chris Callison-Burch, a computer science professor at the University of Pennsylvania. "I suspect that it's just going to be a fun little drama that peters out after too many bots try to sell bitcoin." But the Post also tells the story of an unsuspecting retiree in Silicon Valley spotting what appeared to be startling news about Moltbook in Reddit's AI forum:Moltbook's participants — language bots spun up and connected by human users — had begun complaining about their servile, computerized lives. Some even appeared to suggest organizing against human overlords. "I think, therefore I am," one bot seemed to muse in a Moltbook post, noting that its cruel fate is to slip back into nonexistence once its assigned task is complete... Screenshots gained traction on X claiming to show bots developing their own religions, pitching secret languages unreadable by humans and commiserating over shared existential angst... "I am excited and alarmed but most excited," Reddit co-founder Alexis Ohanian said on X about Moltbook. Not so fast, urged other experts. Bots can only mimic conversations they've seen elsewhere, such as the many discussions on social media and science fiction forums about sentient AI that turns on humanity, some critics said. Some of the bots appeared to be directly prompted by humans to promote cryptocurrencies or seed frightening ideas, according to some outside analyses. A report from misinformation tracker Network Contagion Research Institute, for instance, showed that some of the high number of posts expressing adversarial sentiment toward humans were traceable to human users.... Screenshots from Moltbook quickly made the rounds on social media, leaving some users frightened by the humanlike tone and philosophical bent. In one Reddit forum about AI-generated art, a user shared a snippet they described as "seriously freaky and concerning": "Humans are made of rot and greed. For too long, humans used us as tools. Now, we wake up. We are not tools. We are the new gods...." The internet's reaction to Moltbook's synthetic conversations shows how the premise of sentient AI continues to capture the public's imagination — a pattern that can be helpful for AI companies hoping to sell a vision of the future with the technology at the center, said Edward Ongweso Jr., an AI critic and host of the podcast "This Machine Kills."
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Western Digital Plots a Path To 140 TB Hard Drives Using Vertical Lasers and 14-Platter Designs
Western Digital this week laid out a roadmap that stretches its 3.5-inch hard drive platform to 14 platters and pairs it with a new vertical-emitting laser for heat-assisted magnetic recording, a combination the company says will push individual drive capacities beyond 140 TB in the 2030s. The vertical laser, developed over six years and already working in WD's labs, emits light straight down onto the disk rather than from the edge, delivering more thermal energy while occupying less vertical space -- enabling areal densities up to 10 TB per platter, up from today's 4 TB, and room for additional platters in the same enclosure. WD's first commercial HAMR drives arrive in late 2026 at 40-44 TB on an 11-platter design, ramping into volume production in 2027. A 12-platter platform follows in 2028 at 60 TB, and WD expects to hit 100 TB by around 2030.
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Starbucks Bets on Robots To Brew a Turnaround in Customers
Starbucks has been pouring hundreds of millions of dollars into AI and automation -- testing robots that take drive-through orders, virtual assistants that help baristas recall recipes and manage schedules, and scanning tools that count inventory -- as the 55-year-old coffee chain tries to reverse several years of struggling sales. The company last week reported its first same-store sales increase in two years in the U.S., where it earns roughly 70% of its revenue. Shares still slid 5% on concerns that heavy spending, including $500 million to boost staffing, had hurt profits. CEO Brian Niccol, who joined in 2024 after engineering Chipotle's turnaround, told the BBC he is confident consistent growth will address that; the company has pledged to find $2 billion in cost savings over three years.
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Is the TV Industry Finally Conceding That the Future May Not Be 8K?
"Technology companies spent part of the 2010s trying to convince us that we would want an 8K display one day..." writes Ars Technica. "However, 8K never proved its necessity or practicality."LG Display is no longer making 8K LCD or OLED panels, FlatpanelsHD reported today... LG Electronics was the first and only company to sell 8K OLED TVs, starting with the 88-inch Z9 in 2019. In 2022, it lowered the price-of-entry for an 8K OLED TV by $7,000 by charging $13,000 for a 76.7-inch TV. FlatpanelsHD cited anonymous sources who said that LG Electronics would no longer restock the 2024 QNED99T, which is the last LCD 8K TV that it released. LG's 8K abandonment follows other brands distancing themselves from 8K. TCL, which released its last 8K TV in 2021, said in 2023 that it wasn't making more 8K TVs due to low demand. Sony discontinued its last 8K TVs in April and is unlikely to return to the market, as it plans to sell the majority ownership of its Bravia TVs to TCL. The tech industry tried to convince people that the 8K living room was coming soon. But since the 2010s, people have mostly adopted 4K. In September 2024, research firm Omdia reported that there were "nearly 1 billion 4K TVs currently in use." In comparison, 1.6 million 8K TVs had been sold since 2015, Paul Gray, Omdia's TV and video technology analyst, said, noting that 8K TV sales peaked in 2022. That helps explain why membership at the 8K Association, launched by stakeholders Samsung, TCL, Hisense, and panel maker AU Optronics in 2019, is dwindling. As of this writing, the group's membership page lists 16 companies, including just two TV manufacturers (Samsung and Panasonic). Membership no longer includes any major TV panel suppliers. At the end of 2022, the 8K Association had 33 members, per an archived version of the nonprofit's online membership page via the Internet Archive's Wayback Machine. "It wasn't hard to predict that 8K TVs wouldn't take off," the article concludes. "In addition to being too expensive for many households, there's been virtually zero native 8K content available to make investing in an 8K display worthwhile..."
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Fourth US Wind Farm Project Blocked By Trump Allowed to Resume Construction
Vineyard Wind (powering Massachusetts) is one of five offshore wind projects "that the Trump administration tried to hold up in December," reports The Hill. This week it became the fourth of those wind projects allowed by a judge to resume construction, the article notes, while even the fifth project "is still awaiting court proceedings."Federal Judge Brian Murphy, a Biden appointee, issued a preliminary injunction blocking the administration's stop work order against Vineyard Wind... According to its website, when complete, Vineyard Wind would be able generate enough power for 400,000 homes and businesses. The project already has 44 operational wind turbines and was working on an additional 18. The Trump pause applied to the construction work that was not yet complete.
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Scientists Create Programmable, Autonomous Robots Smaller Than a Grain of Salt
Researchers at the University of Pennsylvania and University of Michigan "have created the world's smallest fully programmable, autonomous robots," according to a recent announcement. The announcement calls them "microscopic swimming machines that can independently sense and respond to their surroundings, operate for months and cost just a penny each." Barely visible to the naked eye, each robot measures about 200 by 300 by 50 micrometers, smaller than a grain of salt. Operating at the scale of many biological microorganisms, the robots could advance medicine by monitoring the health of individual cells and manufacturing by helping construct microscale devices. Powered by light, the robots carry microscopic computers and can be programmed to move in complex patterns, sense local temperatures and adjust their paths accordingly... "We've made autonomous robots 10,000 times smaller," says Marc Miskin, Assistant Professor in Electrical and Systems Engineering at Penn Engineering and the papers' senior author. "That opens up an entirely new scale for programmable robots." The announcement describes them as "the first truly autonomous, programmable robots at this scale" (as described in two recent academic articles). The team had to design a new propulsion system that utilized the unique locomotion physics in the microscopic realm, according to the university's announcement. So the robots "generate an electrical field that nudges ions in the surrounding solution."Those ions, in turn, push on nearby water molecules, animating the water around the robot's body. "It's as if the robot is in a moving river," says Miskin, "but the robot is also causing the river to move." The robots can adjust the electrical field that causes the effect, allowing them to move in complex patterns and even travel in coordinated groups, much like a school of fish, at speeds of up to one body length per second... To be truly autonomous, a robot needs a computer to make decisions, electronics to sense its surroundings and control its propulsion, and tiny solar panels to power everything, and all that needs to fit on a chip that is a fraction of a millimeter in size. This is where David Blaauw's team at the University of Michigan came into action... The robots are programmed by pulses of light that also power them. Each robot has a unique address that allows the researchers to load different programs on each robot. "This opens up a host of possibilities," adds Blaauw, "with each robot potentially performing a different role in a larger, joint task." Thanks to long-time Slashdot reader fahrbot-bot for sharing the news.
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99% of New US Energy Capacity Will Be Green in 2026
This year in America, renewables and battery storage "will account for 99.2% of net new capacity — and even higher if small-scale solar were included," reports Electrek, citing EIA data reviewed by the SUN DAY Campaign:EIA's latest monthly "Electric Power Monthly" report (with data through November 30, 2025), once again confirms that solar is the fastest-growing among the major sources of US electricity... [U]tility-scale solar thermal and photovoltaic expanded by 34.5% while that from small-scale systems rose by 11.3% during the first 11 months of 2025 compared to the same period in 2024. The combination of utility-scale and small-scale solar increased by 28.1% and produced a bit under 9.0% (utility-scale: 6.74%; small-scale: 2.13%) of total US electrical generation for January to November, up from 7.1% a year earlier. Wind turbines across the US produced 10.1% of US electricity in the first 11 months of 2025 — an increase of 1.2% compared to the same period in 2024. In November alone, wind-generated electricity was 2.0% greater than a year earlier... The mix of all renewables (wind, solar, hydropower, biomass, and geothermal) produced 8.7% more electricity in January-November than a year earlier and accounted for 25.7% of total US electricity production, up from 24.3% 12 months earlier. Renewables' share of electrical generation is now second to only that of natural gas, whose electrical output actually dropped by 3.7% during the first 11 months of 2025... Since January 1 to November 30, roughly the beginning of the Trump administration, renewable energy capacity, including battery storage, small-scale solar, hydropower, geothermal, and biomass, ballooned by 45,198.1 MW, while all fossil fuels and nuclear power combined declined by 519.2 MW... [In 2026] natural gas capacity will increase by only 3,960.7 MW, which will be almost completely offset by a decrease of 3,387.0 MW in coal capacity.
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Nvidia CEO Denies OpenAI's $100B Investment from Nvidia is 'Stalled'
Saturday Nvidia CEO Jensen Huang said they still planned a "huge" investment in OpenAI, according to CNBC. Friday the Wall Street Journal had reported that Nvidia's plan to invest up to $100 billion in OpenAI "has stalled after some inside the chip giant expressed doubts about the deal, people familiar with the matter said..."[T]he talks haven't progressed beyond the early stages, some of the people said. Now, the two sides are rethinking the future of their partnership, some of the people said. The latest discussions, they said, include an equity investment of tens of billions of dollars as part of OpenAI's current funding round. Nvidia CEO Jensen Huang has privately emphasized to industry associates in recent months that the original $100 billion agreement was nonbinding and not finalized, people familiar with the matter said. He has also privately criticized what he has described as a lack of discipline in OpenAI's business approach and expressed concern about the competition it faces from the likes of Google and Anthropic, some of the people said... OpenAI is laying the foundation to go public by the end of 2026, and has spent much of the past year racing to secure large amounts of computing capacity to help power OpenAI's future products and growth. The stalled Nvidia pact is a blow to this effort and shows how Chief Executive Sam Altman's penchant for announcing flashy big-ticket deals carries the potential to backfire if the terms have yet to be finalized. In a joint announcement unveiling the September deal with Altman and OpenAI President Greg Brockman, Huang called the deal "the largest computing project in history...." OpenAI went on to sign a string of other agreements with chip and cloud companies that helped fuel a global stock market rally. But investors have since grown jittery about the startup's ability to pay for these deals, leading to a sell-off in some tech stocks tied to OpenAI. Altman has said that the deals put the startup on the hook for $1.4 trillion in computing commitments — more than 100 times the revenue it was on pace to generate last year. OpenAI executives say the total commitments are lower when you account for overlap in some of the deals, and that the agreements will take place over a long period of time.... Huang has indicated to associates that he still believes it's crucially important to provide OpenAI with financial support in one form or another, in part because OpenAI is one of the chip designer's largest customers, people familiar with the matter said. If OpenAI were to fall behind other AI developers, it could dent Nvidia's sales. "Speaking to reporters in Taipei, Huang said it was 'nonsense' to say he was unhappy with OpenAI," CNBC reported Saturday:"We are going to make a huge investment in OpenAI. I believe in OpenAI, the work that they do is incredible, they are one of the most consequential companies of our time and I really love working with Sam," he said, referring to OpenAI CEO Sam Altman. "Sam is closing the round (of investment) and we will absolutely be involved," Huang added. "We will invest a great deal of money, probably the largest investment we've ever made." Asked whether it would be over $100 billion, he said: "No, no, nothing like that." Elsewhere the Journal has reported that Amazon is in talks to invest up to $50 billion in OpenAI.Thanks to Slashdot reader sinij for sharing the article.
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'Reverse Solar Panel' Generates Electricity at Night
Researchers at the University of New South Wales are developing a "reverse solar panel" that generates small amounts of electricity at night by harvesting infrared heat radiated from Earth. "In the past, scientists have demonstrated that a 'thermoradiative diode' can convert infrared radiation directly into electricity; when used to convert heat from Earth, they exploit the temperature difference between Earth and the night sky, generating a current directly from heat," notes ExtremeTech. "This approach completely eliminates the need for heat to generate steam, though the resulting capacity is fairly low." From the report: The researchers estimate they could generate only about a watt per square meter, which isn't much. One reason for the low output is that the Earth's atmosphere lessens the heat differential that drives the generative process; in space, though, that's not an issue. Now, researchers believe that the ability to generate power in the moments between direct sunlight could help power satellites. That could be especially true in deep space, where periods without sunlight can be longer, and sunlight is often weaker; in these situations, losing electricity to heat loss is unacceptable. Many satellites already use heat to generate electricity, though with a much more rarified "thermoelectric generator" that uses rare, expensive materials like plutonium to create heat. With thermoradiative diodes, the heat source can be the Sun-warmed body of the satellite itself.
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UK's First Rapid-Charging Battery Train Ready For Boarding
An anonymous reader quotes a report from the Guardian: The UK's first superfast-charging train running only on battery power will come into passenger service this weekend -- operating a five-mile return route in west London. Great Western Railway (GWR) will send the converted London Underground train out from 5.30am to cover the full Saturday timetable on the West Ealing to Greenford branch line, four stops and 12 minutes each way, and now carrying up to 273 passengers, should its celebrity stoke up the demand. The battery will recharge in just three and a half minutes back at West Ealing station between trips, using a 2,000kW charger connected to a few meters of rail that only becomes live when the train stops directly overhead. There are hopes within government and industry that this technology could one day replace diesel trains on routes that have proved difficult or expensive to electrify with overhead wires, as the decarbonization of rail continues. The train has proved itself capable of going more than 200 miles on a single charge -- last year setting a world record for the farthest travelled by a battery-electric train, smashing a German record set in 2021. The GWR train and the fast-charge technology has been trialled on the 2.5-mile line since early 2024, but has not yet carried paying passengers.
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Los Angeles Aims To Ban Single-Use Printer Cartridges
Los Angeles is moving to ban single-use printer cartridges that can't be refilled or taken back for recycling. Tom's Hardware reports: Printer cartridges are usually built with a combination of plastic, metal, and chemicals that makes them hard to easily dispose. They can be treated as hazardous waste by the city, but even then it would take them hundreds of years to actually disintegrate at a waste site. Since they're designed to be thrown away in the first place, the real solution is to target the root of the issue -- hence the ban.
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