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Apple's Battery Supplier TDK Says It Made a Big Breakthrough

Rocio Fabbro reports via Quartz: TDK, the largest maker of smartphone batteries in the world, said Monday that it has successfully developed a material that could be used in a new battery with "significantly higher energy density" than its existing cells. Energy density refers to how much energy a battery can store relative to its size or weight. The material will be used in TDK's CeraCharge solid-state battery, which it says has an energy density of 1,000 watt-hours per liter -- approximately 100 times more than its conventional solid-state battery. These batteries use an oxide-based solid electrolyte, in contrast with the liquid electrolyte used in lithium-ion batteries that are widely found in electronic devices, making them "extremely safe." Solid-state batteries are smaller, charge faster, last longer, and have a lower risk of damage from temperature changes. "Smaller size and higher capacitance contribute to smaller device size and longer operating time," the Tokyo-based company said. The battery is designed to replace coin cell primary batteries, such as those found in wearable devices like wireless headphones, smartwatches, and hearing aids. The new batteries would be rechargeable, in compliance with new European Union battery regulations that are aimed at reducing the environmental impact of batteries. TDK said it's working toward mass production of solid-state batteries, and beefing up the batteries' capacity using multi-layer lamination technology and expanding their operating temperature range.

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Researchers Devise Photosynthesis-Based Energy Source With Negative Carbon Emissions

Researchers have devised a way to extract energy from the photosynthesis process of algae, according to an announcement from Concordia University. Suspended in a specialized solution, the algae forms part of a "micro photosynthetic power cell" that can actually generate enough energy to power low-power devices like Internet of Things (IoT) sensors. "Photosynthesis produces oxygen and electrons. Our model traps the electrons, which allows us to generate electricity," [says Kirankumar Kuruvinashetti, PhD 20, now a Mitacs postdoctoral associate at the University of Calgary.] "So more than being a zero-emission technology, it's a negative carbon emission technology: it absorbs carbon dioxide from the atmosphere and gives you a current. Its only byproduct is water." [...] Muthukumaran Packirisamy, professor in the Department of Mechanical, Industrial and Aerospace Engineering and the paper's corresponding author, admits the system is not yet able to compete in power generation with others like photovoltaic cells. The maximum possible terminal voltage of a single micro photosynthetic power cell is only 1.0V. But he believes that, with enough research and development, including artificial intelligence-assisted integration technologies, this technology has the potential to be a viable, affordable and clean power source in the future. It also offers significant manufacturing advantages over other systems, he says. "Our system does not use any of the hazardous gases or microfibres needed for the silicon fabrication technology that photovoltaic cells rely on. Furthermore, disposing of silicon computer chips is not easy. We use biocompatible polymers, so the whole system is easily decomposable and very cheap to manufacture." In the paper the researchers also described it as a âoemicrobial fuel cellâ...

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Kenya’s first nuclear plant: why plans face fierce opposition in country’s coastal paradise

Unease and anger are rising over proposals to build country’s first facility on Kilifi coast, home to white sand beaches, coral reefs and mangrove swamps

Kilifi County’s white sandy beaches have made it one of Kenya’s most popular tourist destinations. Hotels and beach bars line the 165 mile-long (265km) coast; fishers supply the district’s restaurants with fresh seafood; and visitors spend their days boating, snorkelling around coral reefs or bird watching in dense mangrove forests.

Soon, this idyllic coastline will host Kenya’s first nuclear plant, as the country, like its east African neighbour Uganda, pushes forward with atomic energy plans.

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© Photograph: John Mawer/Alamy

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© Photograph: John Mawer/Alamy

Solar Modules Deployed In France In 1992 Still Provide 79.5% of Original Output

French photovoltaics group Hespul tested solar panels installed in 1992, reports PV Magazine: The testing showed that the modules still produce on average 79.5% of their initial power after 31 years of operation. In a previous testing carried out 11 years ago, the panels were found to produce 91.7% of their initial power. "This result exceeds the performance promised by the manufacturers who said the panels would have maintained 80% of their output after 25 years," said Hespul. The drop in performance is on average 20.5%, or 0.66% per year over 31 years, and 1.11% per year over the last 11 years... Another more recent study carried out by the US Department of Energy's National Renewable Energy Laboratory (NREL) on 1,700 American sites totaling 7.2 GW of power, showed a median degradation of around -0.75%/year. Moveover, another research study focused on 4,300 residential installations in operation in Europe and used different data processing methodologies. Depending on the methods, a median loss of -0.36% to -0.67%/year was obtained. Thanks to long-time Slashdot reader storkus for sharing the news.

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Electricity Bills Forecasted To Climb With Summer Heat

The Energy Information Administration (EIA) expects Americans' monthly electricity bills to average $173 between June through August, compared to $168 last summer. "The slight bump in costs comes from consumers cranking up their air conditioning more to cope with a warmer season than last year," writes The Verge's Justine Calma. "Bills would have jumped higher, if not for lower residential electricity prices helping to balance out some of the increased energy use from air conditioning." From the report: Some regions are likely to be harder hit by the weather than others. Because of heat and humidity along the Gulf Coast, residents in Southern states typically use the most electricity in the summer to cool their homes. The Pacific Coast, meanwhile, faces the biggest potential percentage increase in retail electricity prices in the nation -- a 7 percent jump since last year. Wholesale electricity costs there have risen since 2022, in part because of a heat and drought-induced shortfall in hydroelectricity generation. Households along the Pacific could see their electricity bills go up an average of $11 per month this summer, according to the EIA. To be sure, the EIA says that weather is "the main source of uncertainty" in its forecasts for folks' utility bills. If this summer winds up being hotter than expected, households could wind up paying even more. Residential electricity use typically peaks in the summer for most of the US because of air conditioning. Extreme heat can even trigger power outages if demand suddenly rises too sharply. California, the Southwest, the Midwest, Texas, and New England are at "elevated risk" of electricity supply shortages during any extreme weather this summer, according to an assessment (PDF) by the North American Electric Reliability Corporation.

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From ‘hug a husky’ to ‘max out the oil’: the Tory environmental journey

We look back through 14 years of Conservative manifestos at policies on net zero, energy, transport and more

It’s been a long journey on environmental issues for the Tories – but somehow it feels as if it has been in the wrong direction. Eighteen years on from David Cameron’s “hug a husky” campaign of 2006, where the climate and nature crises were largely viewed with cross-party consensus, we look back through the (many) Tory manifestos since 2010 to see how the Conservatives’ environmental message has evolved.

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© Photograph: REUTERS

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© Photograph: REUTERS

Top civil servant joins EDF after running department that struck nuclear deal

Alex Chisholm, who led business office during Hinkley Point C negotiations, appointed UK chair of energy firm

One of the UK’s most senior civil servants, Alex Chisholm, has been revealed as the new UK chair of the energy company EDF, after having previously run the department that struck a deal for it to build a new nuclear power station.

Chisholm was permanent secretary at the Cabinet Office, and before that led the business department, which worked on the government deal for EDF to go ahead with the Hinkley Point C nuclear plant in Somerset. The agreement was struck in 2016 with UK bill payers bearing the cost of the construction over a 35-year period.

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© Photograph: EDF

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© Photograph: EDF

DARPA’s planned nuclear rocket would use enough fuel to build a bomb

A lump of rock, next to the periodic table entry for uranium, all against a black background.

Enlarge (credit: OLE-CNX)

High-assay low-enriched uranium (HALEU) has been touted as the go-to fuel for powering next-gen nuclear reactors, which include the sodium-cooled TerraPower or the space-borne system powering Demonstration Rocket for Agile Cislunar Operations (DRACO). That’s because it was supposed to offer higher efficiency while keeping uranium enrichment “well below the threshold needed for weapons-grade material,” according to the US Department of Energy.

This justified huge government investments in HALEU production in the US and UK, as well as relaxed security requirements for facilities using it as fuel. But now, a team of scientists has published an article in Science that argues that you can make a nuclear bomb using HALEU.

“I looked it up and DRACO space reactor will use around 300 kg of HALEU. This is marginal, but I would say you could make one a weapon with that much,” says Edwin Lyman, the director of Nuclear Power Safety at the Union of Concerned Scientists and co-author of the paper.

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Is the Uranium Fuel Proposed For Small Modular Nuclear Reactors a Weapons Risk?

Reuters reports: A special uranium fuel planned for next-generation U.S. nuclear reactors poses security risks because it could be used without further enrichment as fissile material in nuclear weapons, scientists said in an article published on Thursday. The fuel, called high-assay low-enriched uranium, or HALEU, is enriched to levels of up to 20%, compared with about 5% for the fuel that powers most existing reactors. Until recently it was made in commercial amounts only in Russia, but the United States wants to produce it to fuel a new wave of reactors... "This material is directly usable for making nuclear weapons without any further enrichment or reprocessing," said Scott Kemp, one of five authors of the peer-reviewed article in the journal Science. "In other words, the new reactors pose an unprecedented nuclear-security risk," said Kemp, a professor at the Massachusetts Institute of Technology and a former science adviser on arms control at the State Department. A bomb similar in power to the one the U.S. dropped on Hiroshima, Japan in 1945 could be made from 2,200 pounds (1,000 kg) or less of 19.75% enriched HALEU, the article said. "Designing such a weapon would not be without its challenges, but there do not appear to be any convincing reasons why it could not be done," it said. The authors said if enrichment is limited to 10% to 12%, the supply chain would be far safer with only modest costs... TerraPower, a company backed by Bill Gates that has received funding from the [U.S.] Energy Department, hopes to build its Natrium nuclear plant in Wyoming by 2030 to run on HALEU. TerraPower in late 2022 delayed Natrium's launch date by at least two years to 2030 due to a lack of HALEU. A TerraPower spokesperson said Natrium will use HALEU as it allows more efficient energy production and reduces nuclear waste volumes. "TerraPower has made reduction of weapons risks a foundational principle" the spokesperson said, adding that its fuel cycle eliminates the risk of proliferation. Reuters notes that America's 2022 climate legislation "included $700 million for a HALEU availability program including purchasing the fuel to create a supply chain for planned high-tech reactors." But the study's authors argue that if it becomes a standard reactor fuel, it could eliminate the distinction between peaceful and nonpeaceful nuclear programs — in countries around the world. Thanks to Slashdot reader locater16 for sharing the article.

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As America's Solar Power Surges, Wind Power is Struggling

America "is now adding less wind capacity each year" than it was before the passage of a climate-protecting bill in 2022, according to the New York Times. Since then "solar panel installations are indeed soaring to record highs in the U.S., as are batteries that can store energy for later. But wind power has struggled, both on land and in the ocean." Some factors behind the wind industry's recent slowdown may be temporary, such as snarled supply chains. But wind power is also more vulnerable than solar power to many of the biggest logistical hurdles that hinder energy projects today: a lack of transmission lines, a lengthy permitting process and a growing backlash against new projects in many communities... [M]any areas are now crowded with turbines and existing electric grids are clogged, making it difficult to add more projects. Energy companies want to expand the grid's capacity to transport even more wind power to population centers, but getting permits for transmission lines and building them has become a brutal slog that can take more than a decade... Because they can reach the height of skyscrapers, wind turbines are more noticeable than solar farms and often attract more intense opposition from local communities. The wind industry has also been hampered by soaring equipment costs after the pandemic wrecked supply chains and inflation spiked. While those factors initially hurt solar, too, the solar industry has adjusted much faster, with China nearly doubling its manufacturing capacity for panels over the past two years. Wind supply chains, which are dominated by a few manufacturers in China, Europe and the United States, have yet to fully recover. The cost increases have been devastating for offshore wind projects in the Northeast, where developers have canceled more than half the projects they planned to build this decade. Wind isn't languishing only in the United States. While a record 117 gigawatts of new wind capacity came online last year globally, virtually all of that growth was in China. In the rest of the world, developers weren't installing wind turbines any faster than they were in 2020... It's still possible that wind power could rebound. In fact, some experts argue that the recent slowdown is only a temporary artifact of tax policy... [John Hensley, vice president for markets and policy analysis at the American Clean Power Association, a renewable industry trade group] said that U.S. wind manufacturing was beginning to ramp up thanks to new tax incentives, while costs were starting to come down. Last year, orders for new turbines increased by 130%, although many of them won't be delivered until 2025 or later. Some states are now trying to make it easier to build renewable energy: Illinois, Michigan and Minnesota have all passed laws making it harder for local governments to restrict wind and solar. The federal government has issued new rules to accelerate the planning of transmission lines. Demand for wind could also rise as a growing number of states, tech companies and hydrogen producers are trying to secure clean electricity around the clock, rather than just a burst of solar power in the daytime. Many plans for moving America off fossil fuels "envision a large expansion of both solar and wind," the article points out, "because the two sources generate electricity at different hours and can complement each other. A boom in solar power alone, which runs only in daytime, isn't enough."

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Saudi Arabia Eyes a Future Beyond Oil

The kingdom is trying to juggle its still-vital petroleum industry with alternative energy sources like wind and solar as it faces pressure to lower carbon emissions.

© Iman Al-Dabbagh for The New York Times

Arrays of solar panels help power the Jazlah Water Desalination plant in Jubail, Saudi Arabia, reducing carbon dioxide emissions.

Northern Lights Set to Return Tonight as Extreme Solar Storm Continues

Electrical utilities said they weathered earlier conditions as persistent geomagnetic storms were expected to cause another light show in evening skies.

© NASA/Solar Dynamics Observatory

A NASA satellite recorded the sun releasing a powerful solar flare on Friday night. Elevated solar activity this week has contributed to powerful geomagnetic storms in Earth’s atmosphere.

California Will Add a Fixed Charge to Electric Bills and Reduce Rates

Officials said the decision would lower bills and encourage people to use cars and appliances that did not use fossil fuels, but some experts said it would discourage energy efficiency.

© Jim Wilson/The New York Times

Utility companies across the country have long pushed for fixed charges to help cover the cost of maintaining and improving grid equipment like power lines and substations
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