The Champlain Hudson Power Express, a $6 billion, 339-mile buried transmission line, will soon deliver Canadian hydropower from Hydro-Quebec to New York City. The project could supply up to 20% of the city's electricity and power roughly one million homes throughout the year. "This is far and away the largest project I have ever worked on," said Bob Harrison, who has worked in infrastructure for 40 years and is the head of engineering for the Champlain Hudson Power Express. "We like to say it's the largest project you'll never see." The New York Times reports: The massive power project, expected to provide energy to a million New York City customers a year, travels underground and underwater, from the northern plains at the Canadian border to the filled-in marshlands of coastal Queens, much of it loosely following the Hudson River. Its construction included the underwater installation of more than two million feet of cable imported from Sweden. It also required special boats, loaded with equipment that could shoot water jets deep into the sediment, to create trenches for the cable. Then, when it came to placing cable beneath the landscape, more than 700 land-use easements were needed, plus an additional 1.55 million feet of cable. The Champlain Hudson Power Express has found a way to plug into the city, but it wasn't easy. The work included 10 new manholes and more than three miles of new underground circuitry, according to Con Edison, the city's primary electricity provider. "It was literally a hand weave under the streets of Queens," said Jennifer Laird-White, the head of external affairs for Transmission Developers. The hydropower travels from Canada via two buried cables that are as round as cantaloupes. Those lines snake for hundreds of miles under a lake, several rivers (including the Hudson for about 90 miles) and through buried trenches alongside train tracks and roads. The cables resurface in Astoria, Queens, where a converter station shapes, filters and refines the raw power into a product that New Yorkers can consume. In two cavernous rooms that could be mistaken for "Star Wars" sets, the electricity flows through 30 hanging structures encased in what look like metallic, dinosaurlike exoskeletons. Each one weighs about as much as a small humpback whale and contains microprocessors, thousands of valves and fiber wires. "I am still wowed when I walk into that facility," said Mr. Harrison, the engineer. "I mean, it is just mind-boggling."

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"A new type of battery storage is about to be deployed on the Midwestern grid for the first time," reports Electrek: Sodium-ion battery storage manufacturer Peak Energy and global energy company RWE Americas will pilot a passively cooled sodium-ion battery system in eastern Wisconsin on the Midcontinent Independent System Operator network — the first sodium-ion deployment on that grid. Peak Energy says its technology is specifically designed for grid-scale storage and leverages sodium-ion chemistry's inherent stability. Unlike many lithium-ion systems, sodium-ion batteries don't require active cooling and can operate over a wide temperature range without losing performance. That simpler design could make a meaningful dent in the cost of storing electricity. According to Peak Energy, its system cuts the lifetime cost of stored energy by an average of $70 per kilowatt-hour. That's roughly half the total cost of a typical battery system today. The company says it achieves those savings by removing energy-hungry cooling systems, eliminating routine maintenance requirements, and reducing the need to overbuild storage capacity to account for battery degradation over time... If the Wisconsin pilot proves successful, it could open the door to wider adoption of sodium-ion batteries for large-scale energy storage across the US.

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The UK's science minister is announcing details of a five-year, £2.5 billion investment in nuclear fusion, reports the Times of London, "including building one of the world's first prototype fusion power plants in Nottinghamshire and developing a UK sector projected to employ 10,000 people by 2030." Despite the potentially transformative impact of fusion, which in theory could provide limitless clean energy and create a £12 trillion global market, no country has managed to use this fledgling technology to generate useable electricity... [T]he UK is backing a spherical tokamak design... investing an initial £1.3 billion into a prototype fusion power plant called Step (Spherical Tokamak for Energy Production) on the site of a decommissioned coal-fired power station at West Burton in Nottinghamshire. Paul Methven, chief executive of the government-owned UK Industrial Fusion Solutions, which is delivering the Step project, said the aim is to get the reactor operating early in the 2040s. "It's quite an aggressive programme," he said. "We need to show that we can achieve genuine 'wall socket' energy — which has not been done before." On Monday, [science minister] Vallance will also announce £180 million for a facility in Culham, Oxfordshire, to manufacture tritium fuel and £50 million for training 2,000 scientists and engineers in fusion-related disciplines. The government is also buying a £45 million fusion-dedicated AI supercomputer called Sunrise to model plasma physics. Scientists at the UK Atomic Energy Authority last year developed an AI model that can rapidly simulate how the ultra-hot fuel in a fusion power plant will behave, cutting calculations that previously took days down to seconds... Vallance will also announce new support and collaboration for the many fusion, robotics, engineering and AI start-ups working in Britain, to develop a strong supply chain for a new fusion sector. One of those companies, Tokamak Energy, which spun out from the UK Atomic Energy Authority in 2009, has already built a smaller reactor that has informed the Step design. In March 2022, it became the first private organisation in the world to surpass 100 million degrees Celsius in its reactor.

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schwit1 shares a report from Slow Boring: A new report (PDF) from the Center for Global Development documents that most of [the decentralized solar/battery systems used in poor countries in sub-Saharan Africa] use lead-acid batteries, like Americans use in cars. Lead-acid batteries work for a while and then need to be recycled. If they're recycled safely, that's fine. But in poor countries, most lead-acid batteries are not recycled safely and they become a huge source of toxic lead poisoning. C.G.D. believes that decentralized solar systems are currently generating somewhere between 250,000 and 1.5 million tons of unsafe lead-acid battery waste per year, a number that could grow much higher. Americans have mostly heard about lead issues in recent years due to the tragic situation in Flint, Michigan. But on the whole, lead exposure via faulty water pipes is a relatively minor issue. Across American history, the biggest culprits for lead exposure have been lead paint and leaded gasoline. Both were phased out decades ago, but old paint chips and lingering lead in soil have remained problems for years, albeit at diminishing rates. The global situation is quite different and much worse, to the point that in low- and middle-income countries, half of children have blood lead levels above the threshold that would trigger emergency action in the United States. It sounds fantastical to cite numbers this high. But there is credible (albeit somewhat uncertain) research indicating that five million people per year die as a result of lead-induced cardiovascular impairments. And roughly 20 percent of the gap in academic achievement between poor and rich countries is due to lead's impact on kids' cognitive development. The report goes on to note that lead-acid batteries dominate solar storage in poorer countries because they're far cheaper than lithium-ion alternatives. When these lead batteries reach end-of-life, they are often recycled unsafely, creating significant lead pollution. It's difficult to determine the scale of the problem due to limited data and minimal attention from policymakers, but researchers say it could become massive as solar adoption accelerates. Since safer battery technologies and proper recycling methods already exist, the issue largely stems from cost and lack of regulation. In other words, the problem is solvable if addressed early.

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An anonymous reader quotes a report from the New York Times: A novel type of nuclear power plant in Wyoming backed by Bill Gates received a key federal permit on Wednesday, making it the first new U.S. commercial reactor in nearly a decade to receive clearance to begin construction. The Nuclear Regulatory Commission, the federal body that oversees reactor safety, unanimously voted (PDF) to grant a construction permit to TerraPower, a start-up founded by Mr. Gates. TerraPower is one of several companies trying to build a new wave of smaller, advanced reactors meant to be easier to build than the large reactors of old. The permit, which comes after years of consultations and regulatory reviews, means that TerraPower can begin pouring concrete and building the nuclear components of its proposed nuclear plant in Kemmerer, Wyo. The plant, which still faces plenty of logistical hurdles, is currently expected to come online in 2031 near an old coal-burning power plant that is slated to retire a few years later. [...] With its construction permit in hand, the company says it plans to start work on the Wyoming reactor in the coming weeks. The company had already broken ground on the site in 2024 and had begun building the nonnuclear parts of the plant, which did not require a permit. TerraPower has already had to push back its start date several times, and it will still face hurdles in trying to avoid the snags and cost overruns that have plagued other reactor projects as well as securing the fuel it needs. Before coming online, the reactor will also need to secure a separate operating license from the N.R.C., which has told the company it will continue to monitor several safety issues. TerraPower plans to sell electricity from its first plant to PacificCorp, a utility in the Northwest. The company has also agreed to supply up to eight reactors to Meta to power its data centers in the coming years.

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Japan will effectively ban the in-flight use of power banks starting in mid-April after a "recent series of alarming incidents," reports the Asahi Shimbun. From the report: Currently, mobile batteries in Japan are classified as "spare batteries" and are prohibited in checked luggage. For carry-on bags, those exceeding 160 watt-hours are banned, while passengers are limited to two units for those over 100 watt-hours. There is no quantity limit for batteries of 100 watt-hours or less. The new rule will limit passengers to a total of two spare batteries, including power banks. While there is no limit on the number of spare batteries below 100 watt-hours, carrying power banks exceeding 160 watt-hours will remain prohibited. Power banks will be capped at two units regardless of power capacity. Additionally, charging them on board will be prohibited, and it will be "recommended" that passengers not use them at all. As a result, domestic airlines are expected to require passengers to stop using power banks, cementing the effective ban on in-flight use.

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Interesting Engineering reports: US tech giant Google announced on Tuesday that it will build a new data center in Pine Island, Minnesota. The new facility will be powered by 1.9 gigawatts (GW) of clean energy from wind and solar, coupled with a 300-megawatt battery, claimed to be the 'world's largest', with a 30-gigawatt-hour (GWh) capacity and 100-hour duration... The planned battery would dwarf a 19 GW lithium-ion project in the UAE... Form Energy's batteries work very differently from most large batteries today. Instead of using lithium like the batteries in electric cars, they store electricity by making iron rust and then reversing the rusting process to release the energy when needed... Form's iron-air batteries are heavier and less efficient than their counterparts; they can only return about 50% to 70% of the energy used to charge them, while lithium-ion batteries return more than 90%. However, Form's batteries have one distinct advantage. They are cheaper than lithium-ion batteries, costing about $20 per kilowatt-hour of storage, which is almost three times as cheap... It will store 150 MWh of electricity and can supply to the grid for up to 100 hours, delivering about 1.5 MW at peak output. Thanks to long-time Slashdot reader schwit1 for sharing the article.

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The United States installed a record 57 gigawatt hours of new battery storage on its electric grids in 2025, a nearly 30% increase over the prior year that arrived even as the Trump administration cut tax credits for wind and solar in last summer's One Big Beautiful Bill. The figures come from a Solar Energy Industries Association report published Monday, which also projects the market will grow another 21% this year by adding 70 gigawatt hours in 2026 alone. Battery tax credits themselves survived the legislation largely intact, and the majority of last year's new installations were stand-alone systems not tied to specific solar projects. In Texas, solar met more than 15% of electricity demand throughout the summer and beat out coal for the first time, and the SEIA report predicts the state will overtake California this year in total deployed storage. Supply chain restrictions reinforced by the bill and project cancellations could slow the pipeline this year, the report cautions.

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U.S. battery storage installations hit a record 57.6 GWh in 2025, and Texas is now poised to surpass California as the nationâ(TM)s largest storage market in 2026. Electrek reports: According to the US Energy Storage Market Outlook Q1 2026 from the Solar Energy Industries Association (SEIA) and Benchmark Mineral Intelligence, installations are now four times higher than totals from just three years ago. The US had a total of 137 GWh of utility-scale storage installed as of 2025, plus 19 GWh of commercial and industrial systems and 9 GWh of residential storage. Analysts expect the growth streak to continue. More than 600 GWh of energy storage is projected to be deployed nationwide by 2030, even as the Trump administration targets clean energy industries. Two-thirds of utility-scale storage installed in 2025 was built in red states, including nine of the top 15 states for new installations. Texas is projected to surpass California as the countryâ(TM)s largest battery storage market in 2026. Standalone battery projects accounted for nearly 30 GWh of new capacity in 2025, while solar-plus-storage installations made up about 20 GWh. Residential storage deployments reached 3.1 GWh last year, a 51% increase year-over-year. Analysts say virtual power plant programs in states such as Massachusetts, Texas, Arizona, and Illinois are helping drive adoption by reducing costs and easing strain during peak demand periods. The supply chain is shifting to support the boom. In 2025, some battery cell manufacturers pivoted production from EV batteries to dedicated stationary storage cells, converting existing lines and adjusting future plans. Lithium-ion cell manufacturing for stationary storage reached more than 21 GWh in 2025, enough to power Houston overnight, according to SEIAâ(TM)s Solar and Storage Supply Chain Dashboard. Meanwhile, US factories now have the capacity to manufacture 69.4 GWh of battery energy storage systems annually.

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