DOE invests in energy efficient lighting manufacturing

Uranium Critical Mineral Reclassification signals a US executive order directing USGS to restore critical status, boosting nuclear energy, domestic uranium mining, streamlined permitting, federal support, and energy security amid import reliance and supply chain risks.

Key Points

A policy relisting uranium as a critical mineral to unlock funding, speed permits, and strengthen U.S. nuclear security.

✅ Directs Interior to have USGS reconsider uranium classification

✅ Speeds permits for domestic uranium mining projects

✅ Targets import dependence and strengthens energy security

In a strategic move to bolster the United States' nuclear energy sector, former President Donald Trump issued an executive order on January 20, 2025, directing the Secretary of the Interior to instruct the U.S. Geological Survey (USGS) to reconsider classifying uranium as a critical mineral. This directive aims to enhance federal support and streamline permitting processes for domestic uranium projects, thereby strengthening U.S. energy security objectives.

Reclassification of Uranium as a Critical Mineral

The USGS had previously removed uranium from its critical minerals list in 2022, categorizing it as a "fuel mineral" that did not qualify for such designation. The recent executive order seeks to reverse this decision, recognizing uranium's strategic importance in the context of the nation's energy infrastructure and geopolitical considerations.

Implications for Domestic Uranium Production

Reclassifying uranium as a critical mineral is expected to unlock federal funding and expedite the permitting process for uranium mining projects within the United States. This initiative is particularly pertinent given the significant decline in domestic uranium production over the past two decades. According to the U.S. Energy Information Administration, domestic production has decreased by 96%, from 4.8 million pounds in 2014 to approximately 121,296 pounds in the third quarter of 2024.

Current Uranium Supply Dynamics

Despite the push for increased domestic production, the U.S. remains heavily reliant on uranium imports. In 2022, 27% of U.S. uranium purchases were sourced from Canada, with an additional 57% imported from countries including Kazakhstan, Uzbekistan, Australia, and Russia; a recent ban on Russian uranium could further disrupt these supply patterns and heighten risks. This reliance on foreign sources has raised concerns about energy security, especially in light of recent geopolitical tensions.

Challenges and Considerations

While the executive order represents a significant step toward revitalizing the U.S. nuclear energy sector, several challenges persist, and energy dominance faces constraints that will shape implementation:

• Regulatory Hurdles: Accelerating the permitting process for uranium mining projects involves navigating complex environmental and regulatory frameworks, though recent permitting reforms for geothermal hint at potential pathways, which can be time-consuming and contentious.

• Market Dynamics: The uranium market is subject to global supply and demand fluctuations, and domestic producers may face competition from established international suppliers.

• Infrastructure Development: Expanding domestic uranium production necessitates substantial investment in mining infrastructure and workforce development, areas that have been underfunded in recent years.

Broader Implications for Nuclear Energy Policy

The executive order aligns with a broader strategy to revitalize the U.S. nuclear energy industry, where ongoing nuclear innovation is critical to delivering stable, low-emission power. The increasing demand for nuclear energy is driven by the global push for zero-emissions energy sources and the need to support power-intensive technologies, such as artificial intelligence servers.

Former President Trump's executive order to reclassify uranium as a critical mineral, aligning with his broader energy agenda and a prior pledge to end the 'war on coal', signifies a pivotal moment for the U.S. nuclear energy sector. By potentially unlocking federal support, including programs advanced by the Nuclear Innovation Act, and streamlining permitting processes, this initiative aims to reduce dependence on foreign uranium sources and enhance national energy security. However, realizing these objectives will require addressing regulatory challenges, market dynamics, and infrastructure needs to ensure the successful revitalization of the domestic uranium industry.

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Near-Field Thermophotovoltaics captures radiated energy across a nanoscale gap, using thin-film photovoltaic cells and indium gallium arsenide to boost power density and efficiency, enabling compact Army portable power from emitters via radiative heat transfer.

Key Points

A nanoscale TPV method capturing near-field photons for higher power density at lower emitter temperatures.

✅ Nanoscale gap boosts radiative transfer and usable photon flux

✅ Thin-film InGaAs cells recycle sub-band-gap photons via reflector

✅ Achieved ~5 kW/m2 power density with higher efficiency

With the addition of sensors and enhanced communication tools, providing lightweight, portable power has become even more challenging, with concepts such as power from falling snow illustrating how diverse new energy-harvesting approaches are. Army-funded research demonstrated a new approach to turning thermal energy into electricity that could provide compact and efficient power for Soldiers on future battlefields.

Hot objects radiate light in the form of photons into their surroundings. The emitted photons can be captured by a photovoltaic cell and converted to useful electric energy. This approach to energy conversion is called far-field thermophotovoltaics, or FF-TPVs, and has been under development for many years; however, it suffers from low power density and therefore requires high operating temperatures of the emitter.

The research, conducted at the University of Michigan and published in Nature Communications, demonstrates a new approach, where the separation between the emitter and the photovoltaic cell is reduced to the nanoscale, enabling much greater power output than what is possible with FF-TPVs for the same emitter temperature.

This approach, which enables capture of energy that is otherwise trapped in the near-field of the emitter is called near-field thermophotovoltaics or NF-TPV and uses custom-built photovoltaic cells and emitter designs ideal for near-field operating conditions, alongside emerging smart solar inverters that help manage conversion and delivery.

This technique exhibited a power density almost an order of magnitude higher than that for the best-reported near-field-TPV systems, while also operating at six-times higher efficiency, paving the way for future near-field-TPV applications, including remote microgrid deployments in extreme environments, according to Dr. Edgar Meyhofer, professor of mechanical engineering, University of Michigan.

"The Army uses large amounts of power during deployments and battlefield operations and must be carried by the Soldier or a weight constrained system," said Dr. Mike Waits, U.S. Army Combat Capabilities Development Command's Army Research Laboratory. "If successful, in the future near-field-TPVs could serve as more compact and higher efficiency power sources for Soldiers as these devices can function at lower operating temperatures than conventional TPVs."

The efficiency of a TPV device is characterized by how much of the total energy transfer between the emitter and the photovoltaic cell is used to excite the electron-hole pairs in the photovoltaic cell, where insights from near-light-speed conduction research help contextualize performance limits in semiconductors. While increasing the temperature of the emitter increases the number of photons above the band-gap of the cell, the number of sub band-gap photons that can heat up the photovoltaic cell need to be minimized.

"This was achieved by fabricating thin-film TPV cells with ultra-flat surfaces, and with a metal back reflector," said Dr. Stephen Forrest, professor of electrical and computer engineering, University of Michigan. "The photons above the band-gap of the cell are efficiently absorbed in the micron-thick semiconductor, while those below the band-gap are reflected back to the silicon emitter and recycled."

The team grew thin-film indium gallium arsenide photovoltaic cells on thick semiconductor substrates, and then peeled off the very thin semiconductor active region of the cell and transferred it to a silicon substrate, informing potential interfaces with home battery systems for distributed use.

All these innovations in device design and experimental approach resulted in a novel near-field TPV system that could complement distributed resources in virtual power plants for resilient operations.

"The team has achieved a record ~5 kW/m2 power output, which is an order of magnitude larger than systems previously reported in the literature," said Dr. Pramod Reddy, professor of mechanical engineering, University of Michigan.

Researchers also performed state-of-the-art theoretical calculations to estimate the performance of the photovoltaic cell at each temperature and gap size, informing hybrid designs with backup fuel cell solutions that extend battery life, and showed good agreement between the experiments and computational predictions.

"This current demonstration meets theoretical predictions of radiative heat transfer at the nanoscale, and directly shows the potential for developing future near-field TPV devices for Army applications in power and energy, communication and sensors," said Dr. Pani Varanasi, program manager, DEVCOM ARL that funded this work.

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Summer Power Grid Reliability and Climate Risk drives urgent planning as extreme heat, peak demand, drought, and aging infrastructure strain ERCOT, NERC regions, risking outages without renewables integration and climate-informed grid modeling.

Key Points

Assessment of how extreme weather and demand stress the US grid, informing climate-smart planning to reduce outages.

✅ Many operators rely on historical weather, not climate projections

✅ NERC flags elevated blackout risk amid extreme heat and drought

✅ Renewables and storage can boost capacity and cut emissions

As heat ramps up ahead of what forecasters say will be a hotter than normal summer, electricity experts and officials are warning that states may not have enough power to meet demand in the coming months. And many of the nation's grid operators are also not taking climate change into account in their planning, despite available grid resilience guidance that could inform upgrades, even as extreme weather becomes more frequent and more severe.

Power operators in the Central US, in their summer readiness report, have already predicted "insufficient firm resources to cover summer peak forecasts." That assessment accounted for historical weather and the latest NOAA outlook that projects for more extreme weather this summer.

But energy experts say that some power grid operators are not considering how the climate crisis is changing our weather — including more frequent extreme events — and that is a problem if the intent is to build a reliable power grid while accelerating investing in carbon-free electricity across markets.

"The reality is the electricity system is old and a lot of the infrastructure was built before we started thinking about climate change," said Romany Webb, a researcher at Columbia University's Sabin Center for Climate Change Law. "It's not designed to withstand the impacts of climate change."

Webb says many power grid operators use historical weather to make investment decisions, rather than the more dire climate projections, simply because they want to avoid the possibility of financial loss, even as climate-related credit risks for nuclear plants are being flagged, for investing in what might happen versus what has already happened. She said it's the wrong approach and it makes the grid vulnerable.

"We have seen a reluctance on the part of many utilities to factor climate change into their planning processes because they say the science around climate change is too uncertain," Webb said. "The reality is we know climate change is happening, we know the impact it has in terms of more severe heatwaves, hurricanes, drought, with recent hydropower constraints in British Columbia illustrating the risks, and we know that all of those things affect the electricity system so ignoring those impacts just makes the problems worse."

An early heatwave knocked six power plants offline in Texas earlier this month. Residents were asked to limit electricity use, keeping thermostats at 78 degrees or higher and, as extreme heat boosts electricity bills for consumers, avoid using large appliances at peak times. The Electric Reliability Council of Texas, or ERCOT, in its seasonal reliability report, said the state's power grid is prepared for the summer and has "sufficient" power for "normal" summer conditions, based on average weather from 2006 to 2020.

But NOAA's recently released summer outlook forecasts above average temperatures for every county in the nation.

"We are continuing to design and site facilities based on historical weather patterns that we know in the age of climate change are not a good proxy for future conditions," Webb said.

When asked if the agency is creating a blind spot for itself by not accounting for extreme weather predictions, an ERCOT spokesperson said the report "uses a scenario approach to illustrate a range of resource adequacy outcomes based on extreme system conditions, including some extreme weather scenarios."

The North American Electric Reliability Corporation, or NERC — a regulating authority that oversees the health of the nation's electrical infrastructure — has a less optimistic projection.

In a recent seasonal reliability report, NERC placed Texas at "elevated risk" for blackouts this summer. It also reported that while much of the nation will have adequate electricity this summer, several markets are at risk of energy emergencies.

California grid operators, who recently avoided widespread rolling blackouts as heat strained the grid, in its summer reliability report also based its readiness analysis on "the most recent 20 years of historical weather data." The report also notes the assessment "does not fully reflect more extreme climate induced load and supply uncertainties."

Compounding the US power grid's supply and demand problem is drought: NERC says there's been a 2% loss of reliable hydropower from the nation's power-producing dams. Add to that the rapid retirement of many coal power plants — all while nearly everything from toothbrushes to cars are now electrified. Energy experts say adding more renewables into the mix will have the dual impact of cutting climate change inducing greenhouse gas emissions but also increasing the nation's power supply, aligning with efforts such as California's 100% carbon-free mandate that aim to speed the transition.
 

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Bruce Power Life-Extension Programme advances Ontario nuclear capacity through CANDU Major Component Replacement, reliable operation milestones, supply chain retooling for COVID-19 recovery, PPE production, ventilator projects, and medical isotope supply security.

Key Points

A program to refurbish CANDU reactors, extend asset life, and mobilize Ontario nuclear supply chain and isotopes.

✅ Extends CANDU units via Major Component Replacement

✅ Supports COVID-19 recovery with PPE and ventilator projects

✅ Boosts Ontario energy reliability and medical isotopes

Canada’s Bruce Power said on 1 May that unit 1 at the Bruce nuclear power plant had set a record of 624 consecutive days of reliable operation – the longest since it was returned to service in 2012.

It exceeded Bruce 8’s run of 623 consecutive days between May 2016 and February 2018. Bruce 1, a Candu reactor, was put into service in 1977. It was shut down and mothballed by the former Ontario Hydro in 1997, and was refurbished and returned to service in 2012 by Bruce Power.

Bruce units 3 and 4 were restarted in 2003 and 2004. They are part of Bruce Power’s Life-Extension Programme, and future planning such as Bruce C project exploration continues across the fleet, with units 3 and 4 to undergo Major Component Replacement (MCR) Projects from 2023-28, adding about 30 years of life to the reactors.

The refurbishment of Bruce 6 has begun and will be followed by MCR Unit 3 which is scheduled to begin in 2023. Nuclear power accounts for more than 60% of Ontario’s supply, with Bruce Power providing more than 30%   of the province’s electricity.

Set up of Covid recovery council
On 30 April, Bruce Power announced the establishment of the Bruce Power Retooling and Economic Recovery Council to leverage the province’s nuclear supply chain to support Ontario’s fight against Covid-19 and to help aid economic recovery.

Bruce Power’s life extension programme is Canada’s second largest infrastructure project and largest private sector infrastructure programme. It is creating 22,000 direct and indirect jobs, delivering economic benefits that are expected to contribute $4 billion to Ontario’s GDP and $8-$11 billion to Canada’s gross domestic product (GDP), Bruce Power said.

“With 90% of the investment in manufactured goods and services coming from 480 companies in Ontario and other provinces, including recent manufacturing contracts with key suppliers, we can harness these capabilities in the fight against Covid-19, and help drive our economic recovery,” the company said.

“An innovative and dynamic nuclear supply chain is more important than ever in meeting this new challenge while successfully implementing our mission of providing clean, reliable, flexible, low-cost nuclear energy and a global supply of medical isotopes,” said Bruce Power president and CEO Mike Rencheck. “We are mobilising a great team with our extended supply chain, which spans the province, to assist in the fight against Covid-19 and to help drive our economic recovery in the future.”

Greg Rickford, the Minister of Energy, Mines, Northern Development, and Minister of Indigenous Affairs, said the launch of the council is consistent with Ontario’s focus to fight Covid-19 as a top priority and a look ahead to economic recovery, and initiatives like Pickering life extensions supporting long-term system reliability.

The creation of the Council was announced during a live event on Bruce Power's Facebook page, in which Rencheck was joined by Associate Minister of Energy Bill Walker and Rocco Rossi, the president and CEO of the Ontario Chamber of Commerce.

Walker reiterated the Government of Ontario’s commitment to nuclear power over the long term and to the life extension programme, including the Pickering B refurbishment as part of this strategy.

The Council, which will be formed for the duration of the pandemic and will include of all of Bruce Power’s Ontario-based suppliers, will focus on the continued retooling of the supply chain to meet front-line Covid-19 needs to contribute to the province’s economy recovery in the short, medium and long term.

New uses for nuclear medical applications will be explored, including isotopes for the sterilisation of medical equipment and long-term supply security.

The supply chain will be leveraged to support the health care sector through the rapid production of medical Personal Protection Equipment for front line-workers and large-scale PPE donations to communities as well as participation in pilot projects to make ventilators within the Bruce Power supply chain or help identify technology to better utilise existing ventilators;

“Buy Local” tools and approaches will be emphasised to ensure small businesses are utilised fully in communities where nuclear suppliers are located.

The production of hand sanitiser and other cleaning products will be facilitated for distribution to communities.

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MARVEL microreactor debuts at Idaho National Laboratory as a 100 kW, liquid-metal-cooled, zero-emissions generator powering a nuclear microgrid, integrating wind and solar for firm, clean energy in advanced nuclear applications research.

Key Points

A 100 kW, liquid-metal-cooled INL reactor powering a nuclear microgrid and showcasing zero-emissions clean energy.

✅ 100 kW liquid-metal-cooled microreactor at INL

✅ Powers first nuclear microgrid for applications testing

✅ Integrates with wind and solar for firm clean power

Inside the Transient Reactor Test Facility, a towering, windowless gray block surrounded by barbed wire, researchers are about to embark on a mission to solve one of humanity’s greatest problems with a tiny device.

Next year, they will begin construction on the MARVEL reactor. MARVEL stands for Microreactor Applications Research Validation and EvaLuation. It’s a first-of-a-kind nuclear power generator with a mini-reactor design that is cooled with liquid metal and produces 100 kilowatts of energy. By 2024, researchers expect MARVEL to be the zero-emissions engine of the world’s first nuclear microgrid at Idaho National Laboratory (INL).

“Micro” and “tiny,” of course, are relative. MARVEL stands 15 feet tall, weighs 2,000 pounds, and can fit in a semi-truck trailer. But it's minuscule compared to conventional nuclear power plants, which span acres, produces gigawatts of electricity to power whole states, and can take more than a decade to build.

For INL, where scientists have tested dozens of reactors over the decades across an area three-quarters the size of Rhode Island, it’s a radical reimagining of the technology. This advanced reactor design could help overcome the biggest obstacles to nuclear energy: safety, efficiency, scale, cost, and competition. MARVEL is an experiment to see how all these pieces could fit together in the real world.

“It’s an applications test reactor where we’re going to try to figure out how we extract heat and energy from a nuclear reactor and apply it — and combine it with wind, solar, and other energy sources,” said Yasir Arafat, head of the MARVEL program.

The project, however, comes at a time when nuclear power is getting pulled in wildly different directions, from phase-outs to new strategies like the UK’s green industrial revolution that shapes upcoming reactors.

Germany just shut down its last nuclear reactors. The U.S. just started up its first new reactor in 30 years, underscoring a shift. France, the country with the largest share of nuclear energy on its grid, saw its atomic power output decline to its lowest since 1988 last year. Around the world, there are currently 60 nuclear reactors under construction, with 22 in China alone.

But the world is hungrier than ever for energy. Overall electricity demand is growing: Global electricity needs will increase nearly 70 percent by 2050 compared to today’s consumption, according to the Energy Information Administration. At the same time, the constraints are getting tighter. Most countries worldwide, including the U.S., have committed to net-zero goals by the middle of the century, even as demand rises.

To meet this energy demand without worsening climate change, the U.S. Energy Department’s report on advanced nuclear energy released in March said, “the U.S. will need ~550–770 [gigawatts] of additional clean, firm capacity to reach net-zero; nuclear power is one of the few proven options that could deliver this at scale.”

The U.S. government is now renewing its bets on nuclear power to produce steady electricity without emitting greenhouse gases. The Bipartisan Infrastructure Law included $6 billion to keep existing nuclear power plants running. In addition, the Inflation Reduction Act, the U.S. government’s largest investment in countering climate change, includes several provisions to benefit atomic power, including tax credits for zero-emissions energy.

“It’s a game changer,” said John Wagner, director of INL.

The tech sector is jumping in, too, as atomic energy heats up across startups and investors. In 2021, venture capital firms poured $3.4 billion into nuclear energy startups. They’re also pouring money into even more far-out ideas, like nuclear fusion power. Public opinion has also started moving. An April Gallup poll found that 55 percent of Americans favour and 44 percent oppose using atomic energy, the highest levels of support in 10 years.

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Octopus Energy and DTEK Partnership explores licensing the Kraken platform to rebuild Ukraine's power grid, enabling real-time analytics, smart-home integration, renewable energy orchestration, and distributed resilience amid ongoing attacks on critical energy infrastructure.

Key Points

Collaboration to deploy Kraken and renewables to modernize Ukraine's grid with analytics, smart control, and resilience.

✅ Kraken licensing for grid operations and customer analytics

✅ Shift to distributed solar, wind, and smart-home devices

✅ Real-time monitoring to mitigate outages and cyber risks

Octopus Energy, a prominent UK energy firm, has begun preliminary conversations with Ukraine's DTEK regarding potential collaboration to refurbish Ukraine's heavily damaged electric infrastructure as ongoing strikes threaten the power grid across the country.

Persistent assaults by Russia on Ukraine's power network, including a five-hour attack on Kyiv's grid, have led to significant electricity shortages in numerous regions.

Octopus Energy, the largest electricity and second-largest gas supplier in the UK, collaborates with energy firms in 17 countries using its Kraken software platform, and Ukraine joined Europe's power grid with unprecedented speed to bolster resilience. This platform is currently being trialled by the Abu Dhabi National Energy Company (Taqa) for power and water customers in the UAE.

A spokesperson from Octopus revealed to The National that the company is "in the early stages of discussions with DTEK to explore potential collaborative opportunities.”

One of the possibilities being considered is licensing Octopus's Kraken technology platform to DTEK, a platform that presently serves 54 million customer accounts globally.

Russian drone and missile attacks, which initially targeted Ukrainian ports and export channels last summer, shifted focus to energy infrastructure by October, ahead of the winter season as authorities worked to protect electricity supply before winter across the country.

These initial talks between Octopus CEO Greg Jackson and DTEK CEO Maxim Timchenko took place at the World Economic Forum in Davos, set against the backdrop of these ongoing challenges.

DTEK, Ukraine's leading private energy provider, might integrate Octopus's advanced Kraken software to manage and optimize data systems ranging from large power plants to smart-home devices, with a growing focus on protecting the grid against emerging threats.

Kraken is described by Octopus as a comprehensive technology platform that supports the entire energy supply chain, from generation to billing. It enables detailed analytics, real-time monitoring, and control of energy devices like heat pumps and electric vehicles, underscoring the need to counter cyber weapons that can disrupt power grids as systems become more connected.

Octopus Energy, with its focus on renewable sources, can also assist Ukraine in transitioning its power infrastructure from centralized coal-fired power stations, which are vulnerable targets, to a more distributed network of smaller solar and wind projects.

DTEK, serving approximately 3.5 million customers in the Kyiv, Donetsk, and Dnipro regions, is already engaged in renewable initiatives. The company constructed a wind farm in southern Ukraine within nine months last year and has plans for additional projects in Italy and Croatia.

Emphasizing the importance of rebuilding Ukraine's economy, Timchenko recently expressed at Davos the need for Ukrainian and international companies to work together to create a sustainable future for Ukraine, noting that incidents such as Russian hackers accessed U.S. control rooms highlight the urgency.

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