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AI goes nuclear, but what are the risks?

As technology companies invest in small modular reactors (SMRs) to meet energy demands for AI data centers in the future, how safe are they?

Karthik Vinod

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Credit: Joshua Sortino / Unsplash

As AI fever runs high, BBC reported a US-based start-up, Digital Realty that plans to use small nuclear reactors to power their AI data center in Portland, Oregon. But why?

In an interview with BBC, Stephanie Hare, an AI commentator and technology researcher, said that powering data centers in general are very energy-intensive, leaving behind a massive carbon footprint in addition to the usage of water.

Gallons of water, for instance, functions as a coolant to counteract overheating in machines when it busy processes user requests.

Hare noted that computers there can use up to ‘half a liter’ of water to process requests from a single user at a time.  

However, operating an AI data center is going to consume even more power.

“A normal data center needs 32 megawatts of power flowing into the building. For an AI data center it’s 80 megawatts,” said Chris Sharp, Chief Technology Officer (CTO) of Digital Realty, to the BBC. But it’s not just Digital Realty though participating in this enterprise.

Small Modular Reactors can generate one-third the energy of a conventional nuclear power plant and are said to be cheap based on design.

In 2023, The Verge reported Microsoft potentially showing interests in using ‘small modular reactors’ (SMRs) to fuel their AI data centers. These reactors split uranium nuclei with slow-moving neutrons, very much like conventional nuclear power plants.

However, lending a nuclear reactor to commercial establishments comes with its challenges. For one, only skilled workers can be relied upon to operate properly and manage the nuclear reactor.

Whereas for another, is for the nuclear reactor with its safety mechanisms to manage waste. However, scientists at Stanford University and University of British Columbia had worked out some technical flaws in SMRs. They reached the opposite conclusion to what SMR advocates had to say. They said there’s going to be more radioactive leakage owing to the small design that can’t absorb and take away byproduct neutrons from the chain reaction.

However, these generate one-third the energy of a conventional nuclear power plant and are said to be cheaper to design and manufacture. But how soon can they be deployed?

In the US, their Nuclear Regulatory Commission has authorized one such SMR design, by NuScale although it will be demonstrated only in 2029.

Spencer Lamb, Chief Commercial Officer at British data center developed Kao Data, said in the same BBC report, “I’ve heard about SMRs, but it will take a long time to deploy a nuclear-configured data center in the UK, and AI is happening now.”

BBC interviewed Dr Doug Parr, who’s chief scientist of the non-profit environmental activist group, Greenpeace UK, who labeled the unfolding story about SMRs powering AI data centers as mere ‘hype’. He said tech companies will develop cold feet when they realize that SMRs would prove to be much costly when they’re finally demonstrated. “Unrealistic hype lies behind the cost estimates for SMRs,” said Dr Parr. “This hype will fall away as delays and difficulties emerge.”

However, Dr Michael Bluck a nuclear engineer at Imperial College London, UK was more optimistic – at least in a technical standpoint. He said, “There’s no reason why a small fast reactor can’t power a data center, except that you have to get it past the regulator.”

What about public trust though? The BBC doesn’t cover that. Won’t they have the final say in this case, since it involves nuclear energy? At least in history, nuclear energy has been a point of contention in the West, with public suspecting whether authorities were truly capable of ensuring safeguards against radioactive leakages and waste management. In Germany, policy failure to reassure the public actually led to the wide-spread phase out of nuclear reactors. Public trust is hard to achieve, but it takes the government and scientists to trust them back.

In the UK back in 1957, local farmers in Cumbria, England had suspected radioactive leakages from the Sellafield nuclear plant. However, authorities and scientists didn’t pay attention to the farmer’s concerns of a leak, until farmers strenuously lobbied to get the site checked for by scientists – later positively verifying the claims, leading to the shutdown of the plant.

The point isn’t that nuclear energy is somehow more unsafe compared to other forms of energy, say renewable energy. The numbers of countries operating nuclear reactors have actually expanded to 32 countries, including developing countries, with some 436 reactors operational of today.

Yes, catastrophe has occurred in the past – there’s the infamous Chernobyl and Fukushima events. The US alone had witnessed the Three Mile Island nuclear disaster in 1979. But we don’t want that to happen again.

The point is – paradoxically – we’ll never know how safe a technology is, unless we’ve already tested them.

But before that we need to keep the dialogue on as we discuss and discover hidden risks.

Society

The Dragon and the Elephant Dance for a Cleaner World

New reports from the IEA and Ember show that China and India are leading a global turning point — where renewables now outpace fossil fuels.

Dipin Damodharan

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Illustration of a Chinese dragon and Indian elephant made of solar panels and wind turbines dancing over Earth with a light background showing a subtle map of Asia and interconnected global energy grid lines, symbolizing the surge in renewable energy growth led by China and India surpassing fossil fuels in 2025
Symbolic representation of China’s dragon and India’s elephant, formed from solar panels and wind turbines, dancing above a lightly mapped Asia and global grid, illustrating their leadership in the renewable energy revolution/EdPublica

In late September, EdPublica reported an inspirational story from Perinjanam, a quiet coastal village in the South Indian state Kerala, where rooftops gleam with solar panels and homes have turned into micro power plants. It was a story of how ordinary citizens, through community effort and government support, took part in a just energy transition.

That local story, seemingly small, was in fact a mirror of a far bigger movement unfolding worldwide. Now, two major global reports–one from the International Energy Agency (IEA) and another from the independent think tank Ember–confirm that the world is entering a decisive new phase in its energy transformation. Together, their findings show that 2025 is shaping up to be the turning point year: the moment when renewables not only surpassed coal but began meeting all new global electricity demand. The year will likely be remembered as the moment when the global energy transition stopped being a promise and became a measurable reality — led by the two Asian giants, China and India.

The Global Picture: IEA’s Big Forecast

‘The IEA’s Renewables 2025’ report, released on October 7, paints an extraordinary picture of growth and possibility. Despite global headwinds — including high interest rates, supply chain bottlenecks, and policy shifts — renewable energy capacity is projected to more than double by 2030, adding 4,600 gigawatts (GW) of new renewable power.

To grasp that number: it’s equivalent to building the entire current electricity generation capacity of China, the European Union, and Japan combined.

At the centre of this boom is solar photovoltaic (PV) technology, which will account for around 80% of the total growth. The IEA calls solar “the backbone of the energy transition,” driven by falling costs, faster permitting processes, and widespread adoption across emerging economies. Wind, hydropower, bioenergy, and geothermal follow closely behind, expanding capacity even as global systems adapt to higher shares of variable power.

“The growth in global renewable capacity in the coming years will be dominated by solar PV – but with wind, hydropower, bioenergy and geothermal all contributing, too,” said Fatih Birol, Executive Director of the IEA. “As renewables’ role in electricity systems rises in many countries, policymakers need to play close attention to supply chain security and grid integration challenges.”

The IEA forecasts particularly rapid progress in emerging markets. India is set to become the second-largest renewables growth market in the world, after China, reaching its ambitious 2030 targets comfortably. The report highlights new policy instruments — such as auction programs and rooftop solar incentives — that are spurring confidence across Asia, the Middle East, and Africa.

In India, the expansion of corporate power purchase agreements, utility contracts, and merchant renewable plants is also driving a quiet revolution, accounting for nearly 30% of global renewable capacity expansion to 2030.

At the same time, challenges remain. The IEA points to a worrying concentration of solar PV manufacturing in China, where over 90% of supply chain capacity for key components like polysilicon and rare earth materials is expected to remain by 2030.

Grid integration is another bottleneck. As solar and wind grow, many countries are already facing curtailments — when renewable power cannot be fed into the grid due to overload or mismatch in demand. The IEA stresses the need for urgent investment in transmission infrastructure, storage technologies, and flexible generation to prevent this momentum from being wasted.

Evidence on the Ground

If the IEA’s report is a map of where we’re going, Ember’s Mid-Year Global Electricity Review 2025 shows where we are right now — and the signs are unmistakable.

Ember’s data, covering the first half of 2025, reveals that solar and wind met all of the world’s rising electricity demand — and even caused a slight decline in fossil fuel generation. It’s a first in recorded history.

“We are seeing the first signs of a crucial turning point,” said Małgorzata Wiatros-Motyka, Senior Electricity Analyst at Ember. “Solar and wind are now growing fast enough to meet the world’s growing appetite for electricity. This marks the beginning of a shift where clean power is keeping pace with demand growth.”

Global electricity demand rose by 2.6% in early 2025, adding about 369 terawatt-hours (TWh) compared with the same period last year. Solar alone met 83% of that rise, thanks to record generation growth of 306 TWh, a year-on-year increase of 31%. Wind contributed another 97 TWh, leading to a net decline in both coal and gas generation.

Coal generation fell 0.6% (-31 TWh) and gas 0.2% (-6 TWh), marking a combined fossil decline of 0.3% (-27 TWh). As a result, global power sector emissions fell by 0.2%, even as demand continued to grow.

Most significantly, for the first time ever, renewables generated more power than coal. Renewables supplied 5,072 TWh, overtaking coal’s 4,896 TWh — a symbolic but historic milestone.

“Solar and wind are no longer marginal technologies — they are driving the global power system forward,” said Sonia Dunlop, CEO of the Global Solar Council. “The fact that renewables have overtaken coal for the first time marks a historic shift.”

China and India Lead the Way

The two reports together highlight that the epicenter of the clean energy shift is now in Asia.

According to Ember, China’s fossil generation fell by 2% (-58.7 TWh) in the first half of 2025, as clean power growth outpaced rising electricity demand. Solar generation jumped 43% (+168 TWh), and wind grew 16% (+79 TWh), together helping cut the country’s power sector emissions by 1.7% (-47 MtCO₂).

Meanwhile, India’s fossil fuel decline was even steeper in relative terms. Solar and wind generation grew at record pace — solar by 25% (+17 TWh) and wind by 29% (+11 TWh) — while electricity demand rose only 1.3%, far slower than in 2024. The result: coal use dropped 3.1% (-22 TWh) and gas by 34% (-7 TWh), leading to an estimated 3.6% fall in power sector emissions.

For both countries, these numbers align closely with the IEA’s projections. Together, China and India are now the primary engines of renewable capacity growth, demonstrating how large emerging economies can pivot toward clean energy while maintaining development momentum.

Setbacks Elsewhere

Yet progress is uneven. In the United States and European Union, fossil generation actually rose in early 2025.

In the U.S., a 3.6% rise in demand outpaced clean power additions, leading to a 17% increase in coal generation (+51 TWh), though gas use fell slightly. The EU also saw higher gas and coal use due to weaker wind and hydro output.

The IEA attributes part of this slowdown to policy uncertainty, especially in the U.S., where an early phase-out of federal tax incentives has reduced renewable growth expectations by almost 50% compared to last year’s forecast. Europe’s problem is different — a mature but strained grid facing seasonal fluctuations and low wind output.

These regional discrepancies underscore the IEA’s core message: achieving a clean power future isn’t just about building more solar farms, but about building smarter systems — integrated, flexible, and resilient.

Beyond Power

Both reports agree that while renewables are transforming electricity, their impact on transport and heating remains limited.

In transport, the IEA projects renewables’ share to rise modestly from 4% today to 6% in 2030, mostly through electric vehicles and biofuels. In heating, renewables are set to grow from 14% to 18% of global energy use over the same period.

These slower-moving sectors will define the next frontier of decarbonization — one where electrification, hydrogen, and new thermal storage technologies must play a greater role.

The Big Picture

Put together, the IEA’s forecasts and Ember’s real-world data signal that the clean energy transition has passed the point of no return.

Solar and wind are no longer simply catching up — they are now shaping global power dynamics. Their continued expansion is not only meeting new demand but beginning to displace fossil fuels outright.

“As costs of technologies continue to fall, now is the perfect moment to embrace the economic, social and health benefits that come with increased solar, wind and batteries,” said Ember’s Wiatros-Motyka.

Yet both agencies caution: to sustain this momentum, governments must expand grid capacity, diversify supply chains, and improve energy storage systems. Without these, the 2025 breakthrough could become a bottleneck.

A Symbol and a Signal

In a way, the world in 2025 looks a lot like Perinjanam did a few years ago — a place where optimism met obstacles, but the light won. What was once a village-scale transition is now a planetary transformation, proving that even small local models can foreshadow global change.

From Kerala’s rooftops to China’s vast solar parks, from India’s wind corridors to Africa’s mini-grids, the direction is unmistakable: the sun and wind are powering the next phase of human progress.

If 2024 was the year of warnings, 2025 is the year of evidence. The global energy system is finally tilting toward sustainability — not someday, but today.

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FIFA, ICC and F1 accused of greenwashing as Aramco sponsorships clash with climate goals

Human-rights and climate groups urge FIFA, F1, and ICC to cut Aramco sponsorships, warning deals clash with Paris climate goals.

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Ten human-rights and climate groups have written to FIFA, Formula 1 and the ICC demanding they justify their multi-million-dollar sponsorship deals with Saudi Aramco, warning that the arrangements undermine both international climate targets and the sports’ own sustainability commitments.

The letters argue that accepting money from the world’s biggest oil producer while signing up to UN sport-for-climate initiatives exposes a glaring credibility gap. Aramco has repeatedly declared its intent to expand oil and gas production, a stance that campaigners say is fundamentally incompatible with rapid decarbonisation.

Frank Huisingh of Fossil Free Football said, in a statement, “FIFA and other sports bodies cannot claim to champion human rights or sustainability while they sell their platform to a big polluter — especially when that polluter uses our favourite sports to promote fossil fuels and stop the climate action we all need.”

Maryam Aldossari of ALQST warned, “Sports bodies that give Aramco a global audience are helping to strengthen the country’s harsh autocratic system, where criticism of the government is punishable by prison, and a journalist was executed earlier this year.”

New Zealand international Katie Rood added, “the leaders of sports like FIFA and Formula 1 claim that they care about the planet, but it’s impossible to reconcile these commitments with taking money from the largest oil and gas company in the world.”

Critics say Aramco’s growing sports sponsorships are part of a broader strategy to safeguard its status as the world’s largest oil and gas producer. The company has built a global sponsorship portfolio worth more than $1.3 billion across more than 900 agreements. In the coming years, its brand will take center stage as a “Major Worldwide Partner” for the 2026 and 2027 FIFA World Cups, while also serving as a lead sponsor of the 2026 T20 World Cup in India and Sri Lanka.

Sofie Junge Pedersen, Danish international with 88 caps said: “The choice to partner with Aramco helps the Saudi regime distract from its harmful treatment of women and the planet. Values are not just words to write on a page – you need to live them and stand by them. FIFA needs to stand by its set of values on human rights and sustainability, which they are not doing with this sponsorship.”

Wider context

The campaigners’ concerns build on a UN communication issued in August 2023, when Special Rapporteurs cautioned governments and financial institutions that their relationships with Aramco could breach international human-rights law. Although the sports bodies were not directly addressed, activists say the logic applies: by platforming Aramco, global sport risks complicity in the same climate-driven harms.

The controversy underlines sport’s climate credibility crisis. Global governing bodies have pledged to align with the Paris Agreement, but fossil-fuel sponsorships cut directly against those promises. The question now is whether commercial deals worth hundreds of millions outweigh the reputational cost of being seen as enablers of greenwashing.

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Big Fashion’s Fossil-Fuel Addiction: The Clean Heat Opportunity Being Ignored

Despite having a combined turnover of over $2.7 trillion, major fashion brands are lagging on electrification and renewable energy targets, risking both the environment and human rights.

Dipin Damodharan

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Image credit: Fashion Revolution

The global fashion industry, worth a staggering $2.7 trillion, is still clinging to coal and other fossil fuels, putting both the planet and garment workers at risk, according to a damning new report by Fashion Revolution.

Fashion Revolution is a leading global movement advocating for a more ethical and sustainable fashion industry. With a presence in 76 countries, they unite citizens, industry leaders, and policymakers through groundbreaking research, education, and powerful advocacy, driving change from the ground up

The second edition of ‘What Fuels Fashion?’ reveals that despite glossy sustainability claims, most of the world’s biggest fashion brands are failing to tackle their most urgent climate responsibility: switching to clean heat.

‘Clean Heat’ is the use of renewables to meet manufacturing’s thermal energy demand, through solutions such as heat pumps and electric boilers

 ‘Clean Heat’ is the use of renewables to meet manufacturing’s thermal energy demand, through solutions such as heat pumps and electric boilers. This renewable, fossil-free energy could slash emissions from textile production while protecting workers from life-threatening heat stress.

The International Energy Agency warns that to achieve climate commitments, fashion brands need to help their supply chains shift entirely to electric and renewable energy by 2040. Meanwhile, a new study by the American Lung Association highlights the health and climate benefits of replacing fossil-fuelled industrial boilers with heat pumps.

Yet the report’s findings paint a bleak picture. Only 18% of brands have coal phase-out targets for textile processing, and none account for purchased steam — a major emissions source. A paltry 7% disclose any efforts to electrify high-heat processes, even though proven technologies exist, the report points out.



90 brands scored zero on supply chain traceability, with many publicly listed — a glaring accountability gap for investors.

“Fashion brands love to promote innovative new products, but the Victorian-era reality of burning coal and wood to manufacture them is quietly swept under the rug,” said Ruth MacGilp, Fashion Campaign Manager at Action Speaks Louder.

The report also highlights a human cost often ignored in sustainability PR campaigns. As global temperatures rise, garment workers face increasingly unsafe factory conditions — yet not a single brand discloses factory-level heat and humidity data. “The path to decarbonisation will be won or lost by how fashion tackles heat,” warned Liv Simpliciano, Head of Policy & Research at Fashion Revolution.

Some high-profile names fared particularly badly. 39 major brands, including Forever 21, Reebok, Ted Baker, and Van Heusen, scored zero. At the top end, H&M (71%) and Puma (51%) led the rankings, but even leaders fell far short of full marks.

With fewer than a third of brands showing actual emissions reductions, and just 6% investing in renewable energy or efficiency, campaigners argue that fashion’s sustainability drive remains more marketing than meaningful change.

“The textiles industry has the chance to lead,” said Jan Rosenow, Professor of Energy and Climate Policy at Oxford University. “Process heat rarely exceeds 250°C — the technical barriers to moving away from fossil fuels are low. Companies must commit now.”

The report concludes with a blunt warning: unless brands embrace clean heat, they will continue to fuel climate breakdown while exposing workers to unsafe conditions — a toxic combination that could unravel fashion’s future far faster than fleeting trends ever could.

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