Advanced nuclear technology firm Oklo and TRISO nuclear fuel producer Standard Nuclear have finalized a memorandum of understanding to work together on fuel recycling, advanced manufacturing, and utilizing excess US plutonium.

This commercial agreement provides Oklo with its initial third-party buyer pathway for materials processed at its upcoming Tennessee facility. It follows an announcement by the US Department of Energy that selected both companies among five enterprises to enter advanced negotiations for the federal Surplus Plutonium Utilization Program.

The non-binding agreement outlines a framework for the companies to evaluate technical and commercial details. Under the material offtake portion of the agreement, Standard Nuclear will review specifications and delivery timelines for reprocessed uranium and uranium-transuranic streams.

These materials will originate from Oklo’s planned recycling plant in Oak Ridge and will serve as raw inputs for Standard Nuclear’s production of TRISO fuel, which is a specialized fuel type designed for high-temperature advanced reactors.

Supply chain integration

“The collaboration would focus on the supply of reprocessed uranium (RepU) and uranium-transuranic material (U/TRU) streams from used nuclear fuel, which could serve as feedstock for TRISO fuel manufacturing,” said Oklo in a press release.

The second major component of the agreement focuses on managing federal weapons-grade material. The two companies plan to coordinate on licensing requirements, specialized packaging, facilities, and secure transportation networks. 

This logistical framework is intended to safely convert surplus domestic plutonium into usable fuel for next-generation commercial reactors, providing consistent clean electricity to the power grid.

Jacob DeWitte, co-founder and chief executive officer of Oklo, stated that his company focuses on converting used nuclear material into functional fuel supplies to help build the domestic supply chains required for deploying advanced reactors. 

“This partnership represents a compelling pathway to source feedstock materials for our TRISO fuel manufacturing and radioisotope power systems and is an important step in strengthening domestic fuel feedstock supply sources,” added Kurt Terrani, chief executive officer of Standard Nuclear. 

Addressing domestic nuclear waste

The commercial effort addresses a significant domestic inventory challenge, as the United States currently stores approximately 100,000 metric tons of used nuclear fuel from traditional commercial reactors. 

Rather than leaving these stockpiles in long-term storage, the collaboration attempts to extract remaining energy resources from the waste.

Oklo is currently designing a fast test reactor named Pluto that runs specifically on plutonium. The goal of the Pluto project is to prove that surplus military plutonium can function as an interim fuel source for commercial electricity generation instead of remaining a permanent disposal issue.

At the same time, Standard Nuclear operates as an independent, reactor-agnostic fuel developer, meaning its TRISO fuel can be utilized across various third-party reactor designs for both terrestrial power grids and space exploration systems. 

The company also builds radioisotope power systems, which are compact electricity generators used by defense agencies and aerospace programs. These systems will rely directly on the specific isotopes recovered during the recycling processes managed by Oklo.

It’s the third such deal the Interior Department has struck to pay firms to abandon plans for offshore turbines, spending roughly $2.5 billion to get companies to abandon their wind projects.

It’s the third such deal the Interior Department has struck to pay firms to abandon plans for offshore turbines, spending roughly $2.5 billion to get companies to abandon their wind projects.

© Joshua A. Bickel/Associated Press

Hadron Energy has cleared an early milestone in its effort to commercialize small-scale nuclear power in the United States. The advanced nuclear technology company announced that the U.S. Patent and Trademark Office has published its first patent application, placing the engineering framework behind its Halo Micro-Modular Reactor into the public domain.

The patent publication marks the company’s first major intellectual property filing and provides a detailed look at the reactor design Hadron plans to advance through the U.S. licensing process. The application, published on May 7, outlines the technology behind the Halo reactor, a compact nuclear system designed to deliver 10 megawatts of electricity.

Company founder and CEO Samuel Gibson, Chief Nuclear Officer Ross Ridenoure, Christopher R. Neal, and Andrew M. Ward are listed as inventors on the application.

Integrated reactor design

The application details an integral pressurized-water reactor, a compact design that houses key nuclear systems within a single pressure vessel rather than across multiple structures.

Traditional nuclear plants typically rely on large external pipes to connect these systems. Hadron’s approach removes much of that complexity by housing them within one unit.

According to the application, the design could simplify transportation, installation, and maintenance. It also removes the large external coolant piping associated with conventional reactors.

The patent describes reactor configurations capable of producing between 6 and 60 megawatts of thermal energy. Electrical output ranges from 2 to 20 megawatts. Hadron’s flagship Halo configuration targets 10 megawatts of electricity generation.

Built for transportation

The application also focuses heavily on manufacturability and deployment. Engineers designed the reactor vessel in sections connected through circumferential flanges. This approach allows the company to assemble and test the reactor before shipping it to a project site.

Hadron says the design supports transportation by conventional road networks and even certain air transport systems. The company views transportability as a key advantage for remote locations and industrial customers that require reliable power.

The reactor uses Low-Enriched Uranium Plus fuel. Hadron selected the fuel to support multi-year operating cycles while leveraging existing domestic fuel supply infrastructure.

The filing also outlines passive safety features intended to keep the reactor core cooled for extended periods without alternating-current power under design-basis conditions.

Licensing push continues

The patent publication arrives as Hadron advances regulatory work with the U.S. Nuclear Regulatory Commission. Recently, NRC staff accepted the company’s Quality Assurance Program Description. Hadron also submitted its Principal Design Criteria white paper to regulators, another step in the licensing process.

Gibson said the patent publication establishes the technical foundation of the Halo reactor and begins what the company expects to become a broader intellectual property portfolio. He added that the filing reflects years of engineering work and supports Hadron’s long-term commercialization strategy.

Hadron intends to market Halo as a transportable source of carbon-free electricity for sites that lack reliable grid access. The company ultimately hopes to become the first developer to bring a licensed light-water microreactor to market in the United States.

While significant regulatory hurdles remain, the newly published patent offers the clearest public view yet of the technology Hadron plans to use in pursuit of that goal.

A fresh analysis of Type Ia supernovae overturns a controversial 2025 claim that cosmic expansion is slowing.

The post New Supernova Study Confirms Universe’s Expansion is Still Accelerating appeared first on Sci.News: Breaking Science News.

US-based fusion energy company Helion has received the regulatory clearances to build the world’s first fusion energy power plant. The company has received a Radioactive Materials License (RML) and a Radioactive Air Emissions License (RAEL) from the Washington Department of Health (DOH), clearing the way to begin construction of the generator building at the power plant site. 

As the world looks for newer ways to meet it energy demands without emitting carbon, fusion energy seems to be the most likely option. Using the chemical reaction that occurs on the Sun, fusion energy can potentially generate large amounts of energy from simpler atoms like hydrogen and its isotopes. 

Unlike its counterpart, nuclear fission, fusion energy does not produce large amounts of radioactive waste that need to be stored safely. Moreover, unlike renewables like wind and solar, fusion energy plants can work on demand, meeting energy requirements as they arise, without the investments required in energy storage too. 

Commercializing nuclear fusion

For all its benefits, nuclear fusion is still not a commercially available technology because the fusion reactors have not been able to generate more energy than they consume. Washington-state-based Helion Energy, though, is confident that it can achieve this fairly soon. 

While it has not yet published any peer-reviewed papers demonstrating how its fusion reactor works, the company is proceeding to build a fusion reactor that it will deploy commercially. It also has an agreement in place with Microsoft to supply 50 MW of power to a data center from its fusion reactor by 2028. 

The facility dubbed Orion is under construction in Malaga, Washington state and recently became the first such facility in the world to secure regulatory licenses to construct the nuclear plant. So far, the assembly and office building of the plant were completed but the recent grant of licenses from the DOH allows Helion to begin constructing the reactor as well. 

Why is NRC not involved? 

As a nuclear energy company, Helion should ideally be seeking approval from the US Nuclear Regulatory Commission (NRC). However, the NRC regulates nuclear fusion under the byproduct material framework, putting it in the same category for approvals as particle accelerators and hospitals, instead of nuclear reactors. 

This is not just a distinction made by the NRC but one also ratified by the US Congress in the ADVANCE Act of 2024, and it shows that nuclear fusion has a very different safety profile from fission and hence its path to deployment is also different. 

The issuance of the RML and RAEL licenses by the Washington DOH is a major milestone for Helion as it confirms that it has facilities, personnel, and safety programs that meet the safety standards for a fusion facility at the Malaga site. 

“We are extremely proud to be granted these licenses from the Washington DOH, making us the first company in the world with the regulatory approvals in place for fusion power plant operations,” said David Kirtley, CEO of Helion Energy, in a press release shared with Interesting Engineering.

“We have a long history of working with the DOH to license our previous fusion activities. Today’s announcement represents the rigor of that work and opens the door for practical, commercial, safe fusion power.”

In addition to the approvals needed to build its reactor, Helion has also secured a transmission interconnection agreement with Chelan County Public Utility District that will enable energy generated from its fusion power plant to be supplied to the grid, a global first as well. 

The question now is whether Helion will be able to meet its deadline to power Microsoft’s data center by 2028 from its fusion power plant.

A well-heeled homeowner has spent nearly £1 million converting his home so that it could achieve an Energy Performance Certificate with an ‘A’ rating – and demonstrated just how unaffordable Net Zero is.

The post £900,000 – The Price of An A-rated Energy Performance Certificate appeared first on The Daily Sceptic.

Lancaster University has officially unveiled a first-of-its-kind nuclear facility control room simulator, featuring a highly adaptable design that can mimic several distinct reactor types. 

“The pioneering simulator will support the nation’s clean energy goals and help enhance the country’s future nuclear safety,” said the university in a press release.

The facility functions as a training platform to prepare personnel for the domestic clean energy sector and to test safety protocols. Because the layout and internal computing architecture can be altered, operators can model multiple power generation technologies rather than relying on a single static layout.

Multi-reactor simulations

The physical setup features a three-sided wrap-around visual display and audio-visual recording tools. Instructors use these cameras and microphones to review how students handle complex scenarios and provide performance feedback. The physical desks and chairs can be moved into different positions to replicate the unique control room spaces found at real power utilities.

“It has also been designed so that furniture can be reconfigured to represent different control room layouts,” noted the researchers.

The system runs industrial software codes produced by specialized companies, including Westinghouse, GSE Solutions, Tokamak Energy, and Norway’s Institute for Energy Technology. These configurations allow the machinery to mimic the operation of Pressurized Water Reactors, which currently make up the majority of international nuclear plants.

The software can also be used to simulate Small Modular Reactors, smaller units designed for flexible grid deployment, and tokamak fusion systems, which use magnetic fields to contain high-temperature plasma.

“This high-fidelity simulator will enable us to create simulations of scenarios where nuclear facilities are cyber attacked, providing valuable in-depth learning experiences for our cyber security students, some of which may become future cyber security professionals protecting our critical national infrastructure,” concluded Professor Paul Smith, Principal Investigator of the initiative

Practical training for safety behavior

The facility supports several academic areas simultaneously to address shortages in technical workforces. Although Lancaster University offers the only single-honors undergraduate degree in Nuclear Engineering in the United Kingdom, this project also relies heavily on the institution’s existing cybersecurity infrastructure. 

The university holds official accreditation as an Academic Center of Excellence in Cyber Security Research and Education from the National Cyber Security Center.

During practical exercises, instructors can inject simulated malware or network intrusions into the control software. Students must identify these digital anomalies, establish defenses, and maintain regular plant operations under active threat conditions. This training aims to prepare graduates to protect real national infrastructure from network breaches.

Beyond engineering and computer science, the university’s Psychology Department uses the simulator to study human performance. Researchers examine how teams analyze data, communicate, and make decisions during unexpected technical failures or emergency alarms. 

This behavioral data is used to improve safety guidelines for industrial settings where human error carries high risks. The new facility, built on the university campus next to the existing Data Immersion Suite, consolidates the institution’s digital modeling assets.

A Ph.D. student has proposed developing a temperature-resistant battery for applications ranging from space exploration to electric vehicles. Jaybelle Pranada from Texas A&M University attended the Catalyzing Energy Education and Excellence (C3E) Symposium at Arizona State University.

The Symposium, held in April this year, was created by the US Department of Energy to select students across the country working on clean energy solutions. Pranada proposed alternative battery chemistries designed to withstand low-temperature operation.

Of the nearly 100 submissions from across the country, Pranada’s project was placed in the top five. The research focuses on developing computational models to explore alternative battery chemistries that may be better suited for extremely cold environments.

Identifying problems with lithium cells in extreme cold environments

Temperature-resistant batteries are going to be a game-changer if the world has to shift away from the dependence on fossil fuels. To achieve this, Pranada’s team began the project by examining traditional lithium-ion batteries.

The major issue with lithium batteries is that they fail to deliver at the expected levels when temperatures fall below 32 degrees Fahrenheit (0° Celsius) or go above 212 degrees Celsius (100° Celsius).

As the temperature drops below 32 degrees Fahrenheit, the electrochemical processes that enable energy storage and delivery in lithium cells slow down. In extreme cold environments, performance can drop to the point that the cells stop working. Therefore, they cannot be trusted with missions involving space, in which they could be exposed to the harsh conditions.

To fix this, Pranada’s project is investigating both organic and inorganic energy-storage systems. The goal is to identify  cell designs that can perform under harsh thermal conditions.

The computational models developed help the team understand the benefits and limitations of the emerging solutions. It further allows them to evaluate the future applications and identify the methods by which these can be improved.

Polymeric batteries to the rescue

Pranada’s team believes that the limitations of lithium batteries can be solved by replacing them with new materials. They propose using alternative polymers that can operate at temperatures as low as −50 degrees Celsius.

“These batteries, known as polymeric batteries, are developed from synthetic materials that can be readily synthesized and studied in the laboratory,” a press release from the university said.

These materials were then tested in environments ranging from the coldest winter in Alaska to the hottest summer in Arizona. Pranada intends to focus her career on finding energy storage solutions because they in some way shape each aspect of modern life.

The resulting technologies from the research, once delivered, could benefit electric vehicles, defense, the energy storage sector, and the obvious field of space exploration.

“You look around and realize how much of modern life depends on energy storage,” Pranada said. “What is stopping us from developing these energy materials and fully harnessing our capabilities to create technologies that will change our lives?”

Critical Energy is turning rocket engines into geothermal power plants, and it wants to build 300 GW per year by 2045.

Irish firm Net Zero Energy (NZE) aims to construct Rathrush Green Energy Park, a 600MW Long Duration Energy Storage (LDES) facility located outside Rathoe in Co. Carlow.

It is a massive, €2 billion infrastructure project designed to tackle the biggest issue facing clean energy today: what to do when the wind stops blowing and the sun refuses to shine. 

The answer is the new facility built on a 50-acre site. It will act as a giant, green infrastructure for the entire country when needed the most. 

“By making available 600MW of renewable energy at the flick of a switch, this project can satisfy as much as 10% of Ireland’s peak energy requirement. Rathrush Green Energy Park provides significant, secure, sustainable long-duration energy storage for the Irish grid,” said Tim Cowhig, NZE chairman. 

Hydrogen production

The strategy addresses a major flaw in current clean energy infrastructure: waste during peak production.

On exceptionally windy or sunny days, Ireland’s renewable sources often generate far more electricity than consumers need or the national grid can handle. Without a way to store this surplus, wind turbines and solar panels are routinely shut off, completely wasting vast amounts of clean power.

Rathrush would capture that discarded energy. It will use the excess electricity to split water and create green hydrogen. Then comes the subterranean twist.

The plan is to compress the green hydrogen gas and pump it deep underground for storage within custom-engineered, lined rock caverns. When peak demand strains the national grid, the stored hydrogen will be released, feeding above-ground turbines to instantly generate clean electricity.

It is a massive scale-up for Irish infrastructure. Upon completion, the park will generate 30 times as much green energy as the famous Turlough Hill pumped-storage facility in Wicklow. According to the company, it is expected to have seven times the generating capacity of the Ardnacrusha hydropower plant. 

Cutting emissions

The company also mapped out the future facility’s environmental payoff. Interestingly, it is projected to displace 180,000 tonnes of CO2 emissions every single year. 

Mathematically, that is the equivalent of taking 40,000 combustion-engine cars off Irish roads permanently. It also offers a shield against the punishing climate-target fines that loom over the state budget if carbon goals are missed. 

In addition to cutting emissions, the facility could protect local consumers from volatile global energy prices. 

Ireland’s energy security is uniquely vulnerable, as underscored by an annual spend a €10 billion on imported fossil fuels. 

“By harnessing an energy source which was heretofore being wasted, we can insulate consumers from future fossil fuel crises and price shocks such as we saw in the aftermath of the Russian invasion of Ukraine in 2022 and more recently, in the Middle East,” said Peter Harte, NZE Chief Executive. 

The construction phase is estimated to employ up to 1,500 workers at its peak. Once the facility goes live, it will anchor 70 permanent, highly skilled operational jobs in the Carlow region. 

NZE is currently steering the project through its community consultation phase to address local questions regarding the scale of the infrastructure. If all goes according to schedule, the developers intend to formally lodge their planning application by the end of the year. 

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Jackery is jumping on the fridge-battery trend with what it says is the "world's slimmest." FridgeGuard also looks nice; a break from power stations that tend to look more at home at a job site than the kitchen or living room.

Measuring just 2.63 inches (67mm) thick, the Jackery FridgeGuard power station is meant to be tucked on top of, beside, or behind your refrigerator and automatically spring to life with a 10ms UPS switchover during a power outage. Its modest 800W of AC output (1600W peak) and 1kWh LFP battery will keep the typical US fridge / freezer combo running for about 10 hours - or double that if you add a 1kWh expansion battery …

Read the full story at The Verge.

The administration has withdrawn its appeal of a federal court ruling that shot down Trump’s freeze on federal leasing and permitting for wind projects.

The Trump administration has abandoned its effort to halt wind energy projects across the United States and dropped its challenge to the court ruling that tossed President Donald Trump’s order freezing federal permitting and leasing for wind projects. States that challenged the order hailed the development as one of the most significant legal victories against the Trump White House’s campaign against the energy transition.

On Monday, the US Court of Appeals for the First Circuit dismissed the appeal after the Justice Department filed a motion for its voluntary dismissal on June 10.

The case against Trump’s executive order was filed in May 2025 by a coalition of attorneys general from 17 states and Washington, DC, led by New York Attorney General Letitia James.

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The Trump administration has abandoned its effort to halt wind energy projects across the United States and dropped its challenge to the court ruling that tossed President Donald Trump’s order freezing federal permitting and leasing for wind projects. States that challenged the order hailed the development as one of the most significant legal victories against the Trump White House’s campaign against the energy transition.

On Monday, the US Court of Appeals for the First Circuit dismissed the appeal after the Justice Department filed a motion for its voluntary dismissal on June 10.

The case against Trump’s executive order was filed in May 2025 by a coalition of attorneys general from 17 states and Washington, DC, led by New York Attorney General Letitia James.

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The global shift toward net-zero emissions has thrust hydrogen into the spotlight as a promising energy vector capable of decarbonizing sectors traditionally reliant on fossil fuels. Yet, as hydrogen technologies surge from concept to commercial reality, a critical question has emerged: can the insurance industry keep pace with the novel risks intrinsic to these systems? A compelling new article published in Engineering unveils the stark challenge facing insurers and innovators alike. It argues that the nascent nature of hydrogen processes and infrastructures presents a complex risk landscape that current insurance frameworks are ill-equipped to navigate, potentially impeding large-scale deployment needed to meet climate goals.

Central to the discourse is the intricate, multifaceted nature of hydrogen technologies, encompassing production, storage, transport, and utilization systems. Unlike mature renewable technologies such as wind and solar, hydrogen operations are fraught with unique hazards—including extreme flammability, material embrittlement due to hydrogen exposure, and elusive leakage risks—that conventional insurance models have yet to thoroughly address. This gap in risk assessment and management means that financial security mechanisms crucial for investment confidence remain underdeveloped, posing a significant barrier to scalable hydrogen adoption.

The article elucidates that hydrogen’s promise as a clean energy carrier depends not only on decarbonized production but also on scaling the entire value chain rapidly and reliably. However, these pioneering engineering systems entail a gamut of evolving operational risks. These span from property damages and equipment failures to worker safety concerns heightened by hydrogen’s explosive potential. Cybersecurity risks also arise given the increasing digitalization of energy assets, while governance challenges manifest through liability exposures of company directors as projects push technical boundaries. Furthermore, these uncertainties extend into supply chain fragility and performance shortfalls during system ramp-up phases, compounding insurers’ difficulties in crafting comprehensive coverage.

Drawing a parallel to renewable energy insurance markets, the authors observe how wind and solar have benefited from years of data accumulation, modeling refinement, and standardization efforts that underpin sophisticated insurance offerings. This data-driven maturation enables parametric insurance and warranties that safeguard against specific performance metrics and supply chain disruptions. Yet, hydrogen insurance remains embryonic, characterized by cautious underwriting and limited products chiefly targeted at niche applications rather than broad industrial deployment. This immaturity translates to cost premiums and coverage limitations that stall financing and project momentum.

To transcend these hurdles, the article emphasizes the critical need for structured data collection and robust risk characterization specific to hydrogen processes. Without granular operational insights and validated risk models, insurers default to conservative stances that restrict underwriting appetite. The authors champion innovative insurance instruments, notably parametric policies calibrated to predefined risk triggers, and performance warranties that hedge against technology underperformance. These solutions can lower uncertainty for investors and catalyze capital flow, but their success hinges on collaborative data-sharing and transparent risk communication between all stakeholders.

Importantly, the narrative draws attention to a strategic opportunity for insurers. Engagement with hydrogen not only mitigates climate-related portfolio risks but also opens access to a burgeoning industrial market driven by global net-zero ambitions. Nonetheless, disconnects persist between technology developers’ needs and insurers’ capabilities, underscoring the urgency for proactive, multi-stakeholder dialogue. Fostering early-stage collaboration among engineers, academia, private sector, and insurance providers is pivotal to co-design risk assessment methodologies, standardize certification regimes, and ultimately align insurance solutions with engineering innovation trails.

Academia is positioned as a critical catalyst in this ecosystem. Researchers can bridge the gap by aggregating operational data, refining risk models via simulations and real-world studies, and facilitating standardization efforts that underpin insurer confidence. Such integrative efforts advance both scientific understanding and commercial viability. Aligning insurance mechanisms with engineering innovation timelines ensures risk management is embedded from technology readiness level milestones onward, thus streamlining the pathway from pilot projects to full-scale industrial rollouts.

The article also highlights the financial repercussions of currently inadequate insurance coverage. High premiums and coverage gaps retard investment flows and engender hesitancy among financiers wary of unquantified risks. As hydrogen projects are capital-intensive with long development horizons, risk mitigation via comprehensive insurance is non-negotiable for unlocking broader investor appetite. Hence, the advancement of hydrogen insurance products is not merely a financial instrument but a keystone for sustainable market adoption and technological acceleration.

Furthermore, the article delves into technical challenges such as hydrogen’s propensity to induce embrittlement in metals, which degrades structural integrity over time and raises maintenance costs. Insurance models must incorporate such materials science insights to accurately price and cover long-term durability risks. Leakage detection and mitigation technologies also play a vital role in controlling operational hazards, with insurance frameworks incentivizing advancements in sensor deployment and safety protocols. These technological synergies between engineering and insurance amplify resilience and facilitate risk reduction.

In conclusion, the article contends that unlocking hydrogen’s potential as a linchpin of a net-zero future demands a paradigm shift in insurance thinking coupled with systemic collaboration. By gathering rigorous data, designing bespoke risk instruments, and fostering cross-sector partnerships, the insurance market can evolve to support hydrogen innovation robustly. This evolution will serve as the linchpin of investor confidence, enabling swift scale-up while safeguarding public and environmental safety. Without such advancements, the hydrogen economy risks stalling, imperiling global decarbonization trajectories.

The implications extend beyond risk transfer to the very architecture of hydrogen energy systems. Insurance integration informs engineering decisions, safety standards, and policy frameworks, creating a virtuous cycle that harmonizes technical innovation with financial viability. The authors’ clarion call is clear: accelerating the hydrogen transition mandates bridging the gap between emergent technology risks and insurance market readiness. Achieving this nexus will be transformative—not only for hydrogen but for the broader energy transition imperative writ large.

Subject of Research: Insurance frameworks and risk management for new hydrogen technologies and adapted hydrogen processes.

Article Title: Insurance for New and Adapted Hydrogen Processes

News Publication Date: 15-Apr-2026

Web References:
https://doi.org/10.1016/j.eng.2025.11.018
https://www.sciencedirect.com/journal/engineering

Image Credits: Elisabeth Shrimpton, Nazmiye Balta-Ozkan

Keywords: Hydrogen, Net-Zero Energy Transition, Insurance, Risk Management, Engineering Innovation, Parametric Insurance, Performance Warranty, Material Embrittlement, Hydrogen Safety, Technology Readiness, Energy Decarbonization, Financial Instruments

Researchers at Canada’s Western University designed a foam-backed floating photovoltaic (FPV) system. 

It was tested in a stormwater pond in Ontario, Canada. The system generated 7.7 megawatt-hours of electricity over a year, outperforming a standard reference floating system by about 2.7 percent.

“The results of this study established foam-based FPV as a promising and adaptable platform for renewable energy generation,” the team noted in the study paper. 

The ice solution

Solar power has long had a geography problem.

To build the massive solar farms required to displace fossil fuels, developers need land. Usually, that means competing with agriculture or cutting into natural conservation areas. The solution in warmer climates has been “floatovoltaics“—placing solar panels on giant plastic pontoons over lakes and reservoirs.

But if you try that in a Canadian winter, thick moving ice will crush the structures like aluminum cans.

Now, researchers have solved the cold-weather problem using a deceptively simple combination of materials: shipping foam and hot tub bubbles. In particular, a monocrystalline foam-backed FPV system was fabricated.

It shows that floating solar can not only survive freezing temperatures but actually thrive in them. 

Compared with tilted plastic rafts used in warmer climates, this design attaches flexible solar panels directly to thick, waterproof foam sheets, reducing wind exposure.

To prevent ice damage, an underwater air-bubbler system was installed. A shore-based pump pushes bubbles from the bottom of the pond, carrying warmer deep water to the surface to keep the area around the panels ice-free. It acted like a localized defroster.

The results showed that on days when the rest of the pond was frozen, the water directly surrounding the solar array remained completely clear. 

Higher energy yield

Keeping the ice away didn’t break the energy bank, either. Over a year of continuous monitoring, the air-bubbler system consumed as little as 0.02 percent of the total energy the panels generated. At its peak during the worst winter storms, it reduced yield by only 14.5 percent. 

“A regression model developed in this study indicated that the foam-based FPV system generated 7.7. MWh/year, representing up to 2.7% more energy than other PV models,” the study noted. 

It also pulled double duty as a water conservation tool.

In sitting flat against the water’s surface, the foam-backed array acted as a physical shield, blocking direct sunlight and cutting off the wind that typically drives evaporation. The researchers calculated that the relationship between solar coverage and water savings is linear, meaning that every additional square meter of panel added results in a predictable drop in water loss.

“FPV coverage linearly reduced pond evaporation, aiding agricultural water conservation,” the study stated.

If scaled up to cover just half of the Ontario stormwater pond, this innovative setup would trap and save roughly 927 cubic meters of water annually. 

For local communities and farmers, that means keeping hundreds of thousands of gallons of precious water in the reservoir to support agricultural irrigation when it is needed most.

With the concept proven on a small scale, the researchers are looking to take their foam-and-bubble design out of the pond. The next step is testing the technology on a larger scale across harsher, more diverse bodies of water. 

The findings were published in the journal Applied Energy.

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Sweden’s Videberg Kraft selected Rolls-Royce SMR to supply three small modular reactors (SMRs) for a planned nuclear power station on the Värö Peninsula near the existing Ringhals nuclear plant. The decision, announced by state-owned energy company Vattenfall, marks a key milestone in what is set to become Sweden’s first new nuclear power project in more than four decades.

The new plant is expected to add about 1.5 gigawatts of electricity to Sweden’s grid, with the first reactor planned to start running in the mid-2030s. By choosing Rolls-Royce SMR, Sweden becomes the third European country to select this technology, after the United Kingdom and the Czech Republic.

Three-year review narrows field to final two contenders

Videberg Kraft, owned by Vattenfall and Industrikraft, made its decision after three years of reviewing 75 possible reactor options. In the end, the decision came down to two technologies: the pressurized water reactor from Rolls-Royce SMR and the BWRX-300 reactor from GE Vernova Hitachi.

The new plant, called the Videberg Project, will be built next to the Ringhals nuclear power station, one of Sweden’s main electricity sources. When finished, the reactors should help secure Sweden’s energy supply and meet rising demand for electricity.

Desirée Comstedt, acting CEO of Videberg Kraft, pointed out the strong network of companies working with the British reactor developer.

“Rolls-Royce SMR offers a robust network of subcontractors, the majority of which are located in our geographical vicinity. By choosing to move forward with Rolls-Royce SMR, Videberg Kraft and its owner companies also become part of a European program, where we can benefit from shared experience.”

Familiar reactor technology seen as key advantage

Company leaders said that the proven track record of the chosen reactor technology was a key reason for their decision.

Anna Borg, Board member of Videberg Kraft and CEO of Vattenfall, said:

“Overall, the board’s assessment is that Rolls-Royce SMR is the supplier that can give Videberg Kraft the best prerequisites for delivering a successful project. The reactor, a pressurized water reactor (PWR), is the same type used at Ringhals today and is a well-proven technology. Moreover, Rolls-Royce SMR has a commercially attractive contractual set-up.”

Tom Erixon, a board member of Videberg Kraft and Industrikraft, also stressed the project’s focus on industrial methods.

“Rolls-Royce SMR offers an efficient and industrialized concept that reduces the risk of delays. Videberg Kraft, together with Rolls-Royce SMR, is now paving the way for a new nuclear power on the Värö peninsula – something that would not have been possible without a historically unique collaboration between Swedish industry and the energy sector.”

Rolls-Royce expands European nuclear footprint

The Swedish decision gives Rolls-Royce SMR even more momentum as it expands in Europe.

Chris Cholerton, CEO of Rolls-Royce SMR, said, “We are delighted to have been selected by Videberg Kraft as its partner to bring new nuclear power to Sweden. This is a strong endorsement of our transformational approach to the delivery of a standardized fleet of SMRs … [and] further demonstrates growing market confidence in our technology.”

The company’s reactor design can generate 470 megawatts of electricity and is built to provide steady power for at least 60 years. Much of the plant will be made in factories and then brought to the site for assembly. This method aims to reduce construction risks and accelerate the project. Nuclear energy is seeing a revival across Sweden.

This news comes as Sweden is working to speed up the development of its nuclear power. In 2022, the new center-right government became more supportive of nuclear energy. The next year, a roadmap was released calling for new nuclear capacity equal to at least two large reactors by 2035 and up to ten by 2045.

Government support programs introduced in August 2025 have already drawn interest from several developers. Videberg Kraft was the first to apply for state aid in December. More recently, Blykalla, a Swedish reactor developer, asked for funding for a six-reactor project in Norrsundet, and Studsvik submitted plans for up to 1,400 megawatts of new nuclear capacity in southern Sweden.

Asda, Amazon and B&Q among retailers in talks to sell devices that feed into household sockets and can cut electricity bills by 30%

• Spanish homes save €10 a month via renewables expansion

Bosses of some of Britain’s biggest retailers are discussing plans with the government to start selling plug-in solar panels as part of a drive to encourage more UK homes to generate their own electricity.

Executives from brands including Currys, B&Q and Amazon met Martin McCluskey, the minister for energy consumers, on Tuesday to discuss guidelines for selling “balcony solar panels” to the British public.

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© Photograph: Climate Central

© Photograph: Climate Central

© Photograph: Climate Central

A major challenge to dark energy, the mysterious force believed to be driving the universe’s accelerating expansion, has been overturned by a new study. Astronomers say a new analysis has reinforced one of the most important discoveries in modern cosmology, finding that the universe is still expanding at an accelerating rate. The result counters a [...]