Imagine a world where the UK, once a pioneer in nuclear power, reclaims its throne and leads a new era of clean energy. That's the vision, but a stark reality check reveals daunting challenges in reviving its historic nuclear lead. The UK, the birthplace of commercial nuclear energy, now finds itself generating a surprisingly small portion of its power from this source. Massive investments are on the table, but can they truly turn the tide?
Believe it or not, there was a time when the UK boasted more nuclear power stations than the U.S., the USSR, and France combined! It was a global powerhouse until 1970. But here's the kicker: the last new reactor completed was Sizewell B, way back in 1995. Decades of stagnation followed.
Today, the UK holds a less enviable title: it's arguably the most expensive place in the world to build nuclear projects. Yes, you read that right. Building nuclear in the UK costs more than anywhere else. How did this happen? What went wrong?
In 2023, nuclear energy accounted for a mere 14% of the UK's power supply, according to the International Energy Agency. To put that in perspective, it lags behind many of its European neighbors and is dwarfed by France, where nuclear provides a whopping 65% of the electricity. This is where the ambition comes in. The UK aims to have a quarter of its power derived from nuclear sources by 2050. Why the renewed interest? Nuclear is seen as a low-carbon, constant energy source, a critical "baseload" that can complement the fluctuating output of renewable sources like wind and solar.
"There's a very clear momentum that has been observed," explains Doreen Abeysundra, founder of Fresco Cleantech. Geopolitical tensions have undeniably played a role, pushing energy security and independence to the forefront of public discourse. The need to control their own energy destiny is driving decisions.
But here's where it gets controversial... A recent report from the U.K.'s Nuclear Regulatory Taskforce paints a concerning picture. It identified "systemic failures" within the country's nuclear framework, calling for urgent reforms. Fragmented regulation, flawed legislation, and weak incentives were cited as key factors that caused the UK to fall behind. The government has pledged to implement the taskforce's recommendations, with a plan expected within three months. Will they succeed in addressing these deep-rooted issues?
The UK is hedging its bets, exploring both large, established nuclear projects and smaller, next-generation reactors known as Small Modular Reactors (SMRs). Think of SMRs as miniature nuclear reactors, designed to be manufactured in a factory and transported easily. Many incorporate passive cooling techniques, which proponents claim make them safer and more cost-effective. British company Rolls-Royce has been tapped as the preferred partner for SMR development. The first SMR will be located at Wylfa, in Wales, although a completion date has yet to be announced.
And this is the part most people miss... Nuclear energy has faced long-standing criticism from environmental groups, primarily due to concerns about radioactive waste and the potential for catastrophic accidents like Chernobyl. In fact, the UK's very first commercial plant, Windscale, suffered a meltdown in 1957, marking the worst nuclear accident in British history at the time. This historical event casts a long shadow. It is important to remember the lessons of the past.
Most SMRs are based on light water reactor technology – essentially, a scaled-down version of large-scale plants like the planned Sizewell C. But other designs, known as "advanced" reactors, are more experimental. For example, some use different cooling solutions or solvents in the process of separating and purifying nuclear materials. These cutting-edge reactors hold promise, but also carry increased risk.
In September, the UK and the U.S. signed a deal to strengthen commercial ties in nuclear power and streamline licensing for companies operating on both sides of the Atlantic. This could accelerate the development and deployment of new nuclear technologies. But there's a catch.
"The first thing is, there is not, at the moment, a single SMR actively producing electricity under four revenues. They will all come at best in the 30s," warns Ludovico Cappelli, portfolio manager of Listed Infrastructure at VanLanschot Kempen. While SMRs are seen as a potential "game changer" due to their ability to power individual factories or small towns, their commercial viability is still years away. From an investment perspective, this uncertainty raises concerns.
To secure the substantial baseload power needed to balance the intermittency of renewables, large power stations remain crucial, according to Paul Jackson, Invesco's EMEA global market strategist. SMRs likely have a role to play – "they can clearly be more nimble" – but widespread deployment will take time. This raises doubts about the UK's ability to achieve true leadership in nuclear energy, as France and China are already significantly ahead. So, are SMRs just a pipe dream, or a vital piece of the UK's energy future?
The U.K. government body Great British Energy-Nuclear is tasked with identifying sites for additional large-scale plants, having already secured locations in Gloucestershire and Wales. "We are reversing a legacy of no new nuclear power being delivered to unlock a golden age of nuclear, securing thousands of good, skilled jobs and billions in investment," a spokesperson for the Department for Energy Security and Net Zero stated. They added that Sizewell C will provide clean electricity for the equivalent of six million households for at least six decades, and the first small modular reactors at Wylfa will power the equivalent of three million homes, enhancing energy security. These are bold claims, but can they be delivered?
The U.K. has pioneered innovative funding mechanisms to make large-scale nuclear projects more attractive to investors, reducing reliance on direct government funding. One example is the Contract for Differences, used for Hinkley Point C. This guarantees a fixed price for electricity generated over a long period, de-risking investments in an industry known for cost overruns and delays. Hinkley Point C, initially projected to cost £18 billion, has already seen its budget increase significantly. "That fixes one part of the equation, the price risk," Cappelli notes, but construction delays remain a major concern.
The Regulated Asset Base (RAB), first used for nuclear at Sizewell C, attempts to address this issue. Investors get paid from the moment they invest in a nuclear project, rather than only when it starts operating. However, Sizewell C is expected to cost a staggering £38 billion to build. Are these innovative funding models enough to attract the necessary private investment?
Private market investors are showing increasing interest in next-generation nuclear technologies, driven by the soaring energy demands of AI and other power-hungry applications. This has led to a surge in young companies seeking to build out facilities. One notable example is Oklo, a U.S. firm that went public through a SPAC founded by OpenAI's Sam Altman. What role will AI play in the future of nuclear energy?
The U.K.'s advanced modular reactor hopeful, Newcleo, which uses lead for cooling, recently moved its headquarters from London to Paris, strategically expanding its European presence. While Newcleo still aims to have a commercial reactor operational in the UK by 2033, the company has scaled back its British efforts. This raises questions about the UK's ability to retain and attract cutting-edge nuclear companies.
Meanwhile, Tokamak Energy and First Light Fusion, both focused on nuclear fusion, are based in the UK. Fusion, the process of generating power by combining atoms, is still in the experimental stage. All current nuclear power comes from fission, where atoms are split. The UK has committed £2.5 billion to a world-first fusion prototype, a bold investment in a potentially revolutionary technology. Will fusion ever become a commercially viable energy source?
The U.K. also faces challenges in securing the necessary talent to scale up its nuclear projects effectively. While the country boasts world-class universities and technical expertise, "that is very much book knowledge," according to Cappelli. "What we need is real on-the-ground expertise, and that we are probably lacking for the simple reason that we haven't been doing it for a very long time," he adds.
Abeysundra highlights one area where the U.K. excels: its mindset. "There is so much knowledge, innovation, and that can-do attitude, which I don't see as much in other nations," she says, referencing the UK's pioneering role in the Industrial Revolution and offshore wind energy. Can this "can-do" spirit overcome the skills gap?
The U.K. government has positioned nuclear energy as a key component of the future clean energy workforce in its Clean Energy Jobs Plan and has outlined a national roadmap for nuclear skills, focusing on apprenticeships, PhDs, and upskilling mid-career workers. Industry-led initiatives like the Energy Skills Passport also support oil and gas workers in acquiring green skills. Will these initiatives be sufficient to address the talent shortage?
Perhaps the most significant challenge lies in securing the supply chain. Uranium, the fuel used in nuclear reactions, is dominated by just four countries, including Russia. Global demand for uranium could rise by nearly a third by 2030 and more than double by 2040, according to the World Nuclear Association, increasing reliance on a limited number of suppliers and putting pressure on developers. How vulnerable is the UK to supply chain disruptions?
The U.K. government has allocated funding to strengthen the supply chain and has committed to preventing the import of nuclear fuel from Russia by 2028. Fuel for Sizewell C will come from European or "Western suppliers," Cappelli notes. However, this raises a crucial question: How secure is nuclear energy, really? "We have to build nuclear power plants, but we need to build the value chain," Cappelli emphasizes. Workers, expertise, and funding are essential, but a robust and reliable supply chain is equally critical. Otherwise, the UK risks facing "the same issues that we had with gas," becoming overly reliant on a single supplier, but this time for uranium. What are your thoughts? Can the UK truly unlock a "golden age of nuclear" given these challenges? Share your opinions in the comments below!
