solar

The rain in Seville is wonderful and now it is also converted into energy with the new CSIC solar panels

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If there is a renewable energy that has emerged in recent years, it is solar, as can be seen in this graph of the International Energy Agency. However, solar energy still has its limitations: it requires space (hence there are projects in lakes and in the open sea) and of course, it depends on whether there is sun. Yes, putting batteries can cushion that irregular supply (here Spain is a powerhouse), but a research team from the University of Seville with the CSIC has given a twist to classic photovoltaic panels and now can generate electricity with rain. Context. Solar panels lose effectiveness when full sun does not fall on them, either because there are clouds or it rains. Therefore, the ideal scenario is midday on a sunny day, but spoiler: this happens less times than you need to plug something in. Not to mention devices that need continuous and autonomous energy supply, no matter what happens in the electrical grid. The battery option allows us to satisfy the supply on demand and although now They are at their minimum pricestill involves purchasing another component, considering its useful life and its management as waste. The invention. As explains the CSIChave developed a hybrid device that allows capturing energy from both the sun and rain, and also doing so at the same time. As? With a sheet thinner than a human hair (100 nanometers) superimposed on the solar cells. It works on two fronts at the same time: on the one hand as a protective encapsulant for perovskite solar cells, improving their durability in adverse conditions. On the other hand, as a triboelectric nanogenerator: it converts the impact of raindrops into electricity due to friction. Thus, it is capable of producing up to 110 volts, enough to light LEDs or power sensors. Why is it important. Because if this technology is commercialized, it will open the doors for completely autonomous electronic devices to function without batteries or plugs. This is the case of the implementation of IoT outdoors or in remote areas without access to the electrical grid. It serves as an example of use in applications in rural infrastructure or agriculture, such as environmental sensors, weather stations, urban signage or auxiliary lighting. The innovation is not only generating energy from rain, but integrating it all into a single thin layer that solves the main Achilles heel of perovskite: its environmental degradation. In fact, science had already proven with taurine from octopuses. How have they done it. To carry out this device, they used plasma technology to deposit plasma technology in a similar way to that implemented in mobile screens. For the base, perovskite cells, a material with better efficiency and lower cost than traditional silicon, but fragile under conditions such as humidity. The use of triboelectric materials is not new: a research team from the University of Hong Kong a few years ago something similar occurred to him: the generation of electricity by the simple friction of droplets upon impact, such as static electricity generated by rubbing a balloon. Yes, but. Although technically speaking they have generated electricity, the reality is that it is high voltage but low intensity, which in practice is not even useful for charging a mobile phone. And although the perovskite is reinforced with this sheet, in the long term it is still less durable than silicon, so it still has pending issues. Likewise, there remains the great challenge of leaving the laboratory and validating these experiments in real environments. If production can be scaled to an industrial level, another challenge would arise: keeping costs low. In Xataka | Europe produces more clean electricity than fossil electricity for the first time. The hard part starts now In Xataka | Solar panels have an invisible and very brief moment in which they do not work. And solving it is key to your future Cover | Lara John

A plant was on the verge of extinction in the Mojave Desert. So they built a solar park on top

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The Mojave Desert is not only a paradise when it comes to filming movies, setting video games and name operating systems: It is also home to thousands of plant species that are accustomed to an extremely hostile climate. It is estimated that there are about 2,000 species and a very specific one is in danger of extinction. Until they decided to build one of the largest photovoltaic plants in the United States on top of it. The Gemini Solar Project. In short. The journal Frontiers in Ecology and Evolution revealed a few weeks ago the results of a curious study. The ‘threecorner milkvetch’ plant (which has a name for everything except a plant) went from 12 specimens in the Mojave Desert to 93. This plant was being evaluated for inclusion in the Endangered Species Act in the United States and not only has its number multiplied: the new plants are larger and produce more flowers. And they have “only” had to build one of the largest photovoltaic plants in America on top of it, next to Guanchoi in Chileto achieve it. Threecorner milkvetch. It is a creeping plant that has curious needs: it only grows in sandy soils of the Mojave Desert. However, it is dependent on rainfall because its seed remains dormant in the soil and only germinates and reproduces with favorable rainfall. In dry years, it remains completely unnoticed, waiting for a little rain. And it is so rare that the species remains under evaluation for status as threatened or endangered under U.S. Fish and Wildlife Service regulations. In the same desert there is another threatened species: the desert tortoise Gopherus agassizii. The habitat of the two species should be the last one on which it would be decided to build a photovoltaic plant, but there is the Gemini Solar Project. The plant Megaplant. When such an installation is to be carried out in the desert, a technique known as clearing and leveling is used. In essence, all vegetation is removed, the land is leveled and prepared for install the pillars of the solar panels. Not only is a lunar landscape created, but any type of latent seed beneath the surface, such as that of the threecorner milkvetch, is destroyed. However, the Gemini Solar Project’s approach was different. The company wanted the land because it is especially ‘fertile’ within the US to harvest sunlight, but concessions had to be made. One was to minimize the alteration of the habitat of both species to conserve the desert surface with all its biological resources, preserve the topsoil and adapt the facility to the natural relief. On the US Geological Survey website we can see photos of little turtles between the panels. Works. This is part of what we know as ‘ecovoltaics’, with a branch called ‘agrovoltaics’ that we have also talked about and that, although it can be used by companies as a facelift, it serves to unite energy activities with agricultural activities. In the study on the impact of the Gemini Solar Project and the evolution of the plant, researcher Tiffany Pereira discovered what we have mentioned: there were more plants and they were healthier. This showed that the energy company had done its part by not destroying the soil because the seeds had been able to germinate, but they found something else. The plants inside the installation evolved earlier than those outside it and grew not under the panels, but in the strips between the rows. This implies that they still need intense sunlight to mature. The yellow zone is where the Sun shines the most hours. The blue one is the stripe that varies depending on the position of the Sun. The red one is where direct light never shines. Okay, but then… what is the role of the panels in the improved evolution of these plants? The hypothesis used by the researchers is that the panels provide partial shade on the groundslowing down evaporation. We have already said that seeds are dormant until they have the necessary humidity conditions to germinate, and in this context, a more humid microclimate has allowed plants to grow more and produce more seeds. Not all the field is oregano. Now, like almost every scientific study, we look at the other side of the coin. The rainfall in recent years has been favorable and we will have to see what happens with periods of prolonged drought. In a few years we could talk about long-term effects. But, in addition, this absence of plants under the panels could indicate a possible loss of potential habitat in very humid years. In any case, Pereira’s study is not isolated. Other studies point to improvements in both the number of flowering plant species and pollinators in agrovoltaic installations in a state like Minnesota. AND in China there are also indicators that those photovoltaic plants in deserts is contributing to the moisture pocket construction in which plants can thrive more easily. As we said, it remains to be seen the impact of the panels on the creation of a “new” biodiversity in the long term, but for now, what is evident is that it is not necessary to raze land to build a photovoltaic plant. Images | DRI, Tiffany PereiraGemini Solar Project In Xatka | The biggest fiasco of solar energy is in the Nevada desert: it is useless and its promoter blames a Spanish company

A new “solar system” has just been discovered. There’s just one problem: it shouldn’t exist.

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Observations from NASA and the European Space Agency telescopes have made possible the discovery of a new exoplanetary system 116 light years from Earth. According to research by an international team led by the University of Warwick published in the journal Sciencethis new “solar system” has a peculiarity: its architecture contradicts the standard model of planetary formation. In short, based on the astrophysics we know, it should not exist. We do not know if it will force us to rewrite current theories, but we do know that we will urgently review them. The discovery. The LHS 1903 system is made up of four planets orbiting a red dwarf, the most common and longest-lived type of star in the universe. The question is how they are arranged: the innermost planet is rocky, the next two are gaseous and surprisingly, the outermost planet (LHS 1903 e) is also rocky. That planet shouldn’t be there. LHS 1903 e It is a large super-Earth (it has 1.7 times the radius of the Earth and 5.79 Earth masses, thus achieving a similar density) located on the periphery, but of course, it should not be in that position, according to current models. It is not a minor anomaly: it breaks the paradigm from the foundations. This provision contradicts the usual pattern that we see in all known planetary systems: the rocky planets (refractory materials) are in the hot zone and the gas giants in the outer cold zone, beyond the “snow line“, where ice makes it possible to grow large nuclei that capture hydrogen. The canonical example is our solar system: the rocky Mercury, Venus, Earth and Mars orbit closer and the gaseous Jupiter, Saturn, Uranus and Neptune orbit further away. Why is it important. According to theory, a planet as large as LHS 1903 e in that cold zone should have devoured gas until it became a giant like Jupiter. But there is another reading: that the formation model fails and is not the only recipe that explains how exoplanetary systems form. But as we mentioned above, red dwarfs are the most abundant stars in the galaxy and if the model fails in this system, it is plausible that it will not hit the mark in much of the cosmos either. There may be other “inverted” systems pending interpretation or that we have misinterpreted. A possible explanation. What the research team proposes is the gas-poor formation mechanism hypothesis. In short, the important thing is not so much where but when. Thus, the planets were formed one after another in the opposite order to our solar system, starting first with the innermost one and going outwards from there. When planets form, they consume the gas available in the disk that surrounds the star. LHS 1903 was formed last, when there was no more gas left, so it could no longer become the gas giant that might have been expected. As explains Lead researcher and University of Warwick professor Thomas Wilson: “It means that the outermost planet formed millions of years after the innermost one. And because it formed later, there really wasn’t enough gas and dust left in the disk to build this planet.” The research method. The data analyzed by the international team comes from the collaboration of NASA’s TESS telescopes and ESA’s CHEOPS exoplanet characterization satellite: the first detects planets with the in-transit method and the second studies them in depth, which allows it to obtain information such as size, mass and, from there, density. Among the alternative hypotheses considered is its birth from impacts between planets or the loss of its gaseous envelope, which they ended up discarding. Astrophysics has pending subjects. Beyond finding a clear mechanism, what seems evident is that observing this system of exoplanets opens up a range of possibilities about how planets form around stars that will last for years. Néstor Espinoza, an astronomer at the Space Telescope Science Institute in Baltimore who was not involved in the study, explains it for CNN: “This system provides a very interesting piece of information that planetary formation models will try to explain for years, and I am sure that we will learn something new about the planetary formation process once they are compared to each other.” In Xataka | How the solar system was formed: for the Earth to be born, a star had to die first In Xataka | We have been deceived by the distances of the Solar System: the closest neighbor to Neptune is Mercury Cover | NASA Hubble Space Telescope

We just discovered that silicon has an invisible bottleneck, and that has a direct impact on our solar panels

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You turn on a solar cell and wait for the electrons to flow. But there is a moment, invisible and very brief, in which a part of them simply stops. A new study published in Physical Review B just explained why. The discovery. Researchers from the Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanoscience) and the Max Planck Institute for Polymer Research in Germany (MPIP) have discovered that, in silicon, photoexcited electrons do not activate immediately when they receive light. For a few picoseconds (millionths of a millionth of a second) they become stuck in small traps of the material before they can circulate and generate current. The person responsible has a name: a phonon bottleneck. What are phonons and why do they matter? Silicon has a peculiarity compared to other materials: for an electron to be released when receiving light, photons are not enough. According to account IMDEA Nanoscience in its note also needs the collaboration of phonons, which are the vibrations of the crystalline lattice of the material itself. As has been discovered, when such timing vibrations are scarce, electrons become temporarily trapped in surface defects near the edge of the energy band. What no one expected to find. Enrique Cánovas himself, one of the authors of the study, recognize that the discovery was accidental. “What we observed was an accident. We expected an instantaneous response, but instead we saw the electrons take a breather,” he says. Until now, the phonon bottleneck was known in high-energy situations, when silicon was excited with very energetic electrons. This is the first experimental record of the phenomenon with low-energy excitations, which occur with near-infrared light, or even below, the absorption threshold of the material. Until now unexplored territory. Why it has practical relevance. Silicon is the heart of the vast majority of solar panels of the world. Any inefficiency in how your electrons respond to light has direct consequences on the performance of those photovoltaic cells. Understanding that this transient delay exists, and that it has an identifiable cause, opens the door to two possible paths: designing materials or structures that minimize this jam, or even taking advantage of it in a controlled way to improve the behavior of the device. It remains to be seen if the impact of this phenomenon is significant enough to justify redesigns in the manufacturing of solar cells and photovoltaic systems. Cover image | yue chan In Xataka | Imitating photosynthesis to transform CO2 into fuel was always a dream. One that has already come true

We have been dreaming of infinite “solar gasoline” for decades. A new material inspired by plants has just proven that it is possible

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Nature has been keeping a secret in broad daylight for millions of years: photosynthesis. For decades, science has pursued the dream of replicating this process to create clean, sustainable fuels, but “artificial photosynthesis” has always run into walls of inefficiency and technical complexity. Until now. In short. A team of Chinese researchers has developed a method that mimics the natural process of transforming carbon dioxide (CO2) and water into the basic components of gasoline. We are no longer talking about abstract theory; It is a system capable of creating “solar fuel” without depending on expensive chemical additives, bringing us closer to the holy grail of renewable energy. The advance, recently published in the magazine Nature Communicationscomes from a joint team of the Chinese Academy of Sciences and the Hong Kong University of Science and Technology. Researchers have designed a new composite material: tungsten trioxide modified with silver atoms (Ag/WO3). The end of chemical “tricks”. The truly revolutionary thing about this “magic dust” is not only its composition, but what it manages to avoid. To date, most attempts at artificial photosynthesis cheated: they used “sacrificial agents”, organic chemical additives (such as triethanolamine) that facilitated the reaction but were irreversibly consumed in the process, making it unsustainable and expensive on a large scale. This new system breaks that barrier. According to the scientific studythe catalyst achieves the light-driven conversion using only pure water (H2O) as an electron donor. No additives, no tricks. The result of this reaction is the efficient production of carbon monoxide (CO). Although it sounds like a harmful substance on its own, in the chemical industry this molecule is pure gold: it is a key intermediate that, mixed with hydrogen, forms the “synthesis gas” necessary to manufacture complex hydrocarbons such as methanol or synthetic gasoline. Air fuel. We are at the gateway to “solar fuels.” The importance of this finding lies in its ability to decarbonize sectors that electric batteries cannot easily cover, such as commercial aviation or heavy shipping. Furthermore, the researchers stand out in their paper who have come up with a “universal strategy”. Its material (Ag/WO3) is not an isolated invention, but a versatile “charger” that can be coupled to various types of catalysts (such as cobalt phthalocyanine, C3N4 or Cu2O) and improve their performance drastically. In fact, by combining this material with cobalt (CoPc), they achieved an efficiency 100 times higher than that of the catalyst acting on its own, equaling the performance of old systems that used polluting additives. It is a pure circular economy: capturing the gas that warms the planet (CO2) and turning it into a valuable resource. The secret is to imitate the leaves. To understand how they have achieved this, you have to look at a tree leaf. In natural photosynthesis, the processes of breaking down water and fixing CO2 are separate. Plants use a molecule called plastoquinone (PQ) to temporarily transport and “store” electrons excited by the sun before using them, acting as an energy buffer. Without this buffer, the electrons would be lost before they could be used. Chinese scientists asked themselves: “Can we build an artificial plastoquinone?” And the answer was tungsten. The developed material works as a bioinspired cargo reservoir: The battery: Under sunlight, tungsten changes its chemical structure (a valence swing from W6+ to W5+), temporarily trapping electrons as if it were a micro-battery. The bridge: When the system needs energy to convert CO2, the silver (Ag) atoms act as a bridge, releasing those stored electrons just at the right moment to recombine with the “gaps” of the catalyst. This solves the big problem of artificial photosynthesis: time and load management. While the water oxidizes, the system “saves” the solar energy to have it ready when the CO2 enters. From the laboratory to the real world. The best thing about this research is that it has not remained a theoretical simulation under perfect lamps. The team built an experimental device equipped with a Fresnel lens (to concentrate light) and took it outside to test it under natural sunlight. The data from the outdoor experiment are revealing: Solar rhythm: The system began to produce detectable gas from 9:00 a.m., reaching its peak production between 1:00 p.m. and 2:00 p.m., faithfully following the intensity of the sun. Durability: The system demonstrated enviable robustness, maintaining its effectiveness over 72-hour test cycles without showing significant downtime. A bridge to the future. As reported by the South China Morning Postthis advancement builds a critical bridge between renewable energy and high-demand industrial applications. The study authors conclude that their work not only eliminates the need for unsustainable sacrificial agents, but provides a versatile design principle for building autonomous photocatalytic systems. Although there is still a way to go to see solar gas stations, the basic science—the mechanism for storing the sun’s energy in a chemical powder—is no longer a theory. Image | freepik Xataka | Germany has had a crazy idea to solve one of the problems of renewables: covering a lake with solar panels

China needed space to power millions of homes, so it built a mega solar plant in the open sea

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That China is building power plants As if there were no secret, it is not a secret. Without going any further, in the last four years it has been able to replicate the power of the United States, the largest electrical grid in the West. And a good part of the blame solar energy has it. In fact, in 2023 it installed more solar panels than the United States in all of history, as reported by Bloomberg. Solar energy requires space, so China is finding the most varied gaps, from the tibetan plateau to the open sea, where from the end of 2025 It is already connected to the electrical network a mega solar plant that breaks records. In China there are solar panels even in the soup. The largest offshore solar plant in the world. We are talking about the solar plant located off the coast of Kenli district in Dongying city, Shandong province. This engineering project is carried out by China Energy Investment Corporation (CHN Energy) and has a nominal capacity of 1 GW. As explains People’s Dailythe official newspaper of the Central Committee of the Communist Party of China, is China’s first gigawatt-level offshore photovoltaic project and currently the largest offshore solar installation in the world. This is what the Shandong plant looks like. Via: People’s Daily The context: why at sea. Because land space near its large coastal cities is a precious commodity. The Chinese government has a policy of red line to safeguard land used for agriculture and solve the line “Hu Huanyong Line“: while its great solar and wind potential is concentrated in the west, in the Gobi Desert and Inner Mongolia, the megacities and their most powerful industrial fabric are in the east. China is already developing parks of renewables in their deserts, but running Ultra High Voltage lines is very expensive, involves losses along the way and crosses complicated orography. The logical but technically infernal solution is to jump into the water. Until now, floating solar energy was limited to calm waters, such as what Germany is doing with its lakesbut China is another story. The open sea brings salt corrosion, typhoons and waves. Why is it important. Because China’s coastal provinces such as Shandong or Jiangsu constitute large centers of industrial consumption. Generating energy right there avoids those transportation losses of thousands of kilometers from the Gobi desert. If it works within the expected design parameters and the maintenance costs are affordable, it will be a good boost to take advantage of the coasts within the energy transition process from fossil to renewables. The panels are simply colossal. Via: X from People’s Daily A prodigious work of engineering. We are talking about an area of ​​more than 1,200 hectares where 2,934 enormous marine photovoltaic panels are located with standardized dimensions of 60 meters long and 35 meters wide. And they are not drifting panels: it is a large infrastructure designed to withstand extreme conditions ranging from storms to freezing water. In addition, it is hybridized: under the panels the project integrates fish farms, that is, producing electricity above and fish below. This type of combination is not new, as in Guizhou province there is a giant solar plant in whose basement mushrooms are grown. Shandong is aquavoltaic and Guizhou is agrivoltaic. Some numbers that make you dizzy. This installed power of 1 Gigawatt is similar to that of a modern nuclear reactor, so that according to estimates, it will be capable of producing 1,780 million kWh of energy that will be fed into the grid each year and thus supply 2.6 million homes in the region. approximately 60% of your demand. According to the estimates of the engineering company behind it, 1.3 million tons of carbon dioxide will no longer be emitted. In Xataka | Germany has had a crazy idea to solve one of the problems of renewables: covering a lake with solar panels In Xataka | The great myth of solar panels: producing them emits hundreds of times less than coal and gas Cover | People’s Daily

Silver is completely out of control, so the solar panel industry has decided something: go independent

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Solar energy, promised as the cheapest and most abundant source of electricity in history, has hit a geological and financial roadblock of critical proportions. The photovoltaic industry is suffering what the Financial Times has baptized like a Silver Squeeze (silver strangulation), a suffocating pressure derived from the dizzying rise in the price of this metal. Manufacturers, who have been fighting for years against slim margins, are now “feeling the heat” of a raw material that has become unaffordable, forcing them into a frenetic technological race to eliminate it from their products. This is not a simple market rally. What we are witnessing is a “perfect storm” where real physical scarcity threatens to slow down the energy transition. According to Bloombergthe rise in silver has hit some solar panel manufacturers that were already burdened by losses after years of brutal competition. After five consecutive years of deficit, silver is no longer just a safe haven asset to become the bottleneck of the green economy. The figures are dizzying. According to the Financial Timesthe price of silver has risen 300% in the last year, breaking the psychological barrier of $100 and currently standing at $112 per ounce. This increase is fueled by three fires: geopolitical fear of possible US military intervention, the voracity of the industry and the massive entry of retail investors, for whom silver is “the poor man’s gold.” This speculative appetite has skyrocketed prices by 60% since the beginning of 2026 alone. The magnitude of the increase in prices is such that from investment portals such as Investing News have reported record prices of $93.77 in mid-January, but market reality has exceeded forecasts in just weeks. But there are geopolitical actors pulling the strings behind this scenario. China, the largest global refiner, has imposed strict controls to export by 2026-2027, shielding its strategic resources for its own renewable energy and Artificial Intelligence industry. Added to this is that India and Russia are aggressively buying physical silver, draining inventories in London and Asia and causing real shortages in Western markets. Financial drain and existential threat The impact on the cost structure of a solar panel has been devastating. According to data from BloombergNEFsilver has gone from representing 3.4% of the cost of a module in 2023, to 14% last year, to an unsustainable 29% today. Silver has dethroned polysilicon and become the most expensive component in manufacturing. For the giants of the sector, this is raining in the wet. Titans like JinkoSolar, Longi and Trina Solar They are posting quarterly losses consecutive in the midst of a “vicious price war.” Factories operate at just 50% of their capacity and, in many cases, sell modules below production cost. Jenny Chase analyst cited by Financial Timessummarizes the situation without hot towels: “It is very painful for solar module manufacturers, who are already having a terrible time and are expected to report losses by 2025.” The problem is that companies have their hands tied in passing on these costs. As explained in PV Magazinedue to excess capacity and weak demand, it is “almost impossible” to pass on the entire increase in the price of silver to the end customer. Although Chinese manufacturers have recently tried to raise prices between 1.4% and 3.8%, these increases are minuscule compared to the 180% or 300% increase in raw material prices. The long-term consequence is what experts call “demand destruction.” If prices remain at these levels, silver use in the PV industry could fall by 20% this year, not only due to efficiency, but because the industry simply cannot afford it. The great substitution Faced with financial asphyxiation, the industry has accelerated what they call “thrifting”, a race against time to replace silver with cheaper metals. The favorite candidate is copper. According to Investing Newscopper is trading 22,000% cheaper than silver and is much more abundant, making it the great hope for saving profit margins. Faced with suffocation, the industry has accelerated the thrifting (material savings) to replace silver with copper, which is 22,000% cheaper. The large Chinese manufacturers already they have made a move. Longi Green Energy will begin mass production of cells using base metals (such as copper and aluminum) in the second quarter of this year. Trina Solar is developing copper contacts to reduce its dependence, and Aiko Solar has already begun producing completely silver-free cells. The Chinese industry, which is more intensive in the use of silver than the European one, lead this forced transition. However, the change is not easy. As they warn in PV Magazine warns that not all solar technologies are equally suited: while heterojunction (HJT) and back contact (BC) cells facilitate the use of copper, the current dominant technology (TOPCon) requires high temperature processes that make copper vulnerable to oxidation. Here lies the greatest risk of this flight forward. Copper oxidizes and degrades faster than silver. Bloomberg alert about danger of launching copper panels on the market without sufficient longevity tests. Customers demand 20-year warranties; If new panels fail within 10 years due to copper corrosion, manufacturers could face massive liabilities that would put them out of business. As one precious metals expert points out: “Going too far too fast can be risky.” A future of scarcity and recycling The pressure on silver doesn’t just come from the sun. At this point we introduce in the equation Artificial Intelligence. The data centers necessary for AI consume enormous amounts of energy, which triggers demand for solar installations and, therefore, money. It is a vicious circle where technology devours physical resources. Furthermore, the electric vehicle (EV) enters like another big predator: An electric car consumes up to 50 grams of silver, almost twice as much as a combustion car. It is estimated that demand from the automotive sector could triple by 2030. In this context of shortages, some companies are taking desperate measures. He Financial Times reveals that Samsung Construction and Trading has skipped the middlemen and signed a two-year direct agreement with a mining company to secure its supply. … Read more

China bets on liquid air to stabilize its largest solar sea on the roof of the world

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In the vastness of Qinghai province, where the Tibetan plateau merges with the Gobi desert, dust and rock they have given up their domain to a mega-project of 610 square kilometers. This “sea of ​​silicon”—the size of the city of Madrid—is home to seven million photovoltaic panels that have transformed the ecosystem: the shade of the plates retains humidity and allows thousands of “photovoltaic sheep” graze today where before there was only sand. However, this massive deployment encountered a physical barrier. As researcher Wang Junjie explainssolar and wind energy are “random and intermittent”; When the sun sets in the Gobi, the power grid shakes. To stabilize this giant, China has gone beyond conventional lithium, betting on liquid air storage. White giants in the desert. On the outskirts of the city of Golmud, a row of white tanks stands sentinel against the horizon. It is the world’s largest liquid air energy storage (LAES) project, dubbed by Chinese media as the “Super Air Power Bank.” According to the Xinhua agencythis facility of the state-owned company China Green Development Investment Group (CGDG) has entered its final commissioning phase. It is not just any battery: its capacity is 60,000 kilowatts (60 MW) and it can release up to 600,000 kWh per cycle, a discharge capable of sustaining the daily consumption of tens of thousands of homes. Physics against lithium. Why has China opted for this technology instead of its popular lithium ion batteries? The answer lies in scale and geography. While lithium is ideal for mobile devices or cars, on an industrial scale it faces cost and degradation problems. Air has an advantage that is difficult to match: it is there and it costs nothing. AND, as CleanTechnica remindswhen it becomes liquid air its density skyrockets, up to 750 times more than that of normal air, which allows energy to be stored in large quantities without dams or geographical conditions. The alchemy of cold: From gas to liquid at -194°C. The operation of the system is a feat of cryogenic engineering. As detailed by Xinhuathe process is divided into three critical phases: Load (Compression): During the day, surplus solar from a nearby 250 MW plant powers giant compressors. The air is purified and cooled to -194 degrees Celsius (-317°F). At that extreme temperature, the air becomes liquid. Heat recovery: The heat generated during compression is stored in high-pressure spherical tanks to be reused. Discharge (Expansion): When electrical demand rises or the sun disappears, the liquid air heats up. When vaporized, its volume expands explosively (750 times), driving a turbine that generates electricity again for the grid. This cycle, according to researcher Wang Junjieachieves over 95% cold storage efficiency and 55% “round trip” efficiency, harnessing what would otherwise be waste heat and eliminating the need for rare materials. A global laboratory on the “roof of the world.” China is not the only nation in this race. The United Kingdom waits to complete a similar plant in Manchester by 2026, and South Korea too has made progress in this technology. However, the Chinese scale is, again, incomparable. However, the success of these projects in Qinghai is due to centralized planning which combines three sources: solar, wind and hydroelectric. At 3,000 meters above sea level, the cold, pure air improves the efficiency of the panels, and the electricity generated is already 40% cheaper than that of coal. This energy not only illuminates homes; It powers the data centers that power China’s Artificial Intelligence, using the plateau’s frigid air to cool the servers. From the factory to the engine of the world. As Professor Ningrong Liu reflectsChina no longer wants to be just the “factory of the world”, but the “engine” of that factory, exporting its engineering and its green network model. Golmud’s project It is the symbol of a paradox: the country that emits the most CO2 is also the one that builds the fastest carbon exit. In the silence of the Gobi, between cryogenic tanks and sheep herders, China is demonstrating that the air we breathe can literally be the fuel that sustains the 21st century. Image | freepik and Bureau of Land Management Xataka | On the roof of the world, China is building the largest solar park on the planet

TRAPPIST-1 was the most promising solar system to search for life. Now our joy is in a well

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spent years searching for planets that could serve as a Earth 2in 2015 it happened. Thanks to the TRAPPIST telescope, we discovered an ultra-cool dwarf star which had three planets around it. They published the discovery in 2016, but a year later it was concrete that in the system there was a total of seven Earth-sized planets. It was clear: we had to continue investigating because there were options for one to harbor life. TRAPPIST-1 (because a way of naming the findings it is with the name of the telescope) became the “holy grail” of extraterrestrial life. The star is 40 light years away and three of its planets are estimated to be in the “habitable zone.” This is the segment with the ideal conditions for life to prosper. The initial enthusiasm was justified: they were small planets, they were not gas giantsand the star is so faint that the temperate zone of the system would favor those ideal conditions. Different climate models pointed out that only a small greenhouse effect would be needed for any of them to be able to house liquid water on their surface. but the same James Webb telescopewhat youit is giving us so much joyis the one who has unmounted almost completely the narrative of TRAPPIST-1 as a system in which to search for life. And in less than a decade, these planets have gone from being the most promising place in our cosmic block to being just another rocky exoplanet. James Webb lowering the soufflé There are multiple reasons why we look for extraterrestrial life. There are the philosophical reasons, the well-worn question of whether we are alone in the universe. Then the scientists, eager to find life to understand how much organisms can endure in other conditionsunderstand the origin and evolution of the universe and even compare ourselves with them. And the practices: experiment in other environments, get resources and to a new home. The telescopes with which we observe the system are good for that first exploration, but more recently the task was left in the hands of one of the most powerful we have, the James Webb Space Telescopeor JWST. The result of an international megaproject is not on earth, but on a satellite, which allows sharpness and detail of the observed objectives unattainable for terrestrial telescopes. And when we have pointed the JWST at TRAPPIST-1, the soufflé has been deflated. His work has focused on the inner planets, known as TRAPPIST-1b, c and d. The conclusion is thatTheir habitability is complicated due to the lack of atmosphere or one so “thin” that it would not protect the planet well against the star’s radiation, also implying surfaces so hot that they would not be compatible with life. Any hint of atmosphere that was initially observed is now practically ruled out. As we read in spacefrom the University of Arizona they comment that “based on the most recent work, the previously reported tentative hint of an atmosphere was likely just “noise” from the host star.” If the star itself gave us hope in the first place by not seeming to be a “killer” of planets, it has now moved to the other side of the spectrum. It is possible that this radiation bombardment allowed Extremophilic microbes will develop on those planets, but to do so they would have to have a denser atmosphere, something that JWST is not seeing. However, all is not lost. The Great Hope: TRAPPIST-1e Although d, c and d no longer look good, the great hope now falls on e, f and g. They are the planets located in a more temperate orbit, where the balance between radiation and atmospheric loss may be more conducive to having a denser atmosphere that allows life. Among them, astronomers consider TRAPPIST-1e to be the most promising. A few weeks ago, a article showed how JWST observed TRAPPIST-1e during four different transits at the time when the planet came closest to its star. The telescope’s near-infrared spectrograph recorded subtle changes in the light around it, which would indicate the presence of chemicals in the atmosphere. Their estimate is that the atmosphere is composed of a majority of nitrogen and methane, and not carbon dioxide as occurs on Venus or Mars. Now, is this the case or is it once again noise from the host star.” It is a possibility that they do not rule out, but as they comment, need more observations and analysis. The researchers are clear that “if TRAPPIST-1e has an atmosphere, it is habitable.” It is a bold statement, but the second part of the question is “is there an atmosphere?” For now, it remains an enigma, but the next step is what will allow researchers to rule out the planet as habitable or get excited again. What will they do? Observe the transit through the star of TRAPPIST-1e when it coincides with that of TRAPPIST-1b. This way, ‘e”s signal will not be contaminated with noise from its star and observers will be able to “separate what the star is doing from what is actually happening in the planet’s atmosphere. If it has one.” Therefore, there is a thread to hold on to, but it is better not to get too excited about a planet that is right here in the neighborhood of the infinite vastness of the universe. Images | IT/M. Kornmesser, NASA/JPL-Caltech In Xataka | The James Webb has broken another historical record: a supermassive black hole older than expected

There was a reason for airports to avoid solar panels, and Malaga has just dismantled it

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In our daily lives we are increasingly accustomed to seeing solar panels. on balconies either roofs. Even when we travel by car it is common to find plate-covered land either large wind turbines. However, there is one place where until now solar energy seemed out of place: airports. For years, sun reflection was an unsolved problem in the airport environment. The fear that a flash could affect a pilot on approach stopped any attempt to install solar panels. In Malaga, that fear is no longer an obstacle. In short. Malaga-Costa del Sol Airport sum for the first time self-consumption photovoltaic installations promoted by private companies. Europcar and Goldcar They were the first to take the stepwith a project developed by the Malaga engineering company Ubora Solar. As La Opinión de Málaga highlightsit is not a project promoted by Aena, but rather a direct commitment by private companies to generate their own clean energy in one of the most regulated and monitored spaces in the country. The big obstacle: glare. The main challenge of the project was not technical or economic, but rather air safety. The possibility that the solar panels generated annoying reflections or glare on pilots and controllers was a critical concern, also regulated by Aena regulations. The answer involved an exhaustive analysis of visual risk. Ubora Solar developed aeronautical glare studies following the standards of the Federal Aviation Administration (FAA) and the European Aviation Safety Agency (EASA), taking into account everything from the actual flight trajectories to the visibility from the control tower. All of this served to precisely define the orientation and inclination of the panels within the airport complex. The results were conclusive. Luminance values ​​were well below the European threshold of 20,000 cd/m², and any possible reflection coincided with the position of the sun, being “masked by its own brightness”, a phenomenon known as sun masking. In other words: the reflection exists, but it is imperceptible and does not pose an operational risk. In other countries it was already a reality. Although solar installations already exist in airports in other countries, the case of Malaga is especially relevant due to its private nature. In the United States and in different parts of Europeairport photovoltaics has been a reality for years, always subject to strict glare and air safety studies. The difference, as various media emphasizeis that in Spain this step had not yet been taken without a direct impulse from the airport manager. Málaga thus acts as a laboratory and precedent for a model that could be replicated in other airports in the country. A success that does not blind. For years, the sun was seen as a risk at airports. In Malaga, he has become an ally. The project shows that the greatest fear —the glare— it is not fought with prohibitions, but with rigorous studies, planning and technology. Málaga-Costa del Sol Airport not only manages takeoffs and landings. It has also opened a new path for the energy transition in one of the most complex environments that exists. And it has done so without losing sight of the most important thing: safety. Image | solar ubora and Unsplash Xataka | When the December sun surpasses that of April: the luminous paradox of a vertical panel on the balcony

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