Reversals and returns to grace of nuclear power in the world

The world's nuclear production generates 10% of the electricity and some countries such as China and Russia have launched new projects, but many challenges remain to be overcome, including the management of radioactive waste.

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At a time when Germany is turning the page on nuclear power, other countries are interested in this energy, citing energy needs and seeing it as a climatic asset, but this renewed interest has yet to materialize. State of the art of the use of the atom in the world. Post-Fukushima slowdown.

Nuclear energy currently generates 10% of the world’s electricity in 31 countries (excluding Germany), according to the International Energy Agency (IEA). The atom experienced a setback with the accident at the Fukushima plant in Japan in 2011. Germany and Switzerland then decided to abandon it, more or less gradually, while China slowed down its huge program. Italy had voted for a nuclear phase-out by referendum in 1987 after Chernobyl. Globally, the world has gone from 441 operating reactors in 2002, its maximum, to 422 by the end of 2022, according to the International Atomic Energy Agency (IAEA).

Total nuclear production returned to its highest level in 2021, but the future is uncertain: the fleet is ageing and the number of projects launched each year – 10 in 2022, half of which are in China – is far from the pace of the 1970s and 1980s. In 1976 alone, 44 constructions were launched.

Historical Champions

The United States remains the leading civilian nuclear power, with 92 reactors. Their average age is increasing (42 years) and only two are under construction. But Joe Biden believes in reaching 100% “clean” electricity by 2035 and the government intends to support the sector. France, with 56 reactors (average age 37 years), remains the most nuclearized country per capita. After deciding to reduce the size of its fleet, it is now moving towards a new program of six or even 14 reactors, the first of which will be commissioned by 2035-2037.

In the meantime, the national electricity company EDF will have to complete its new generation EPR reactor in Normandy, which is 12 years behind schedule. Great Britain, another pioneer, has nine reactors, many of which are nearing the end of their lives. It plans to build eight by 2050, but the only plant under construction, Hinkley Point C, has seen its costs soar.

Two major active countries

Today, the real super-actives in civil nuclear power are China at home and Russia for export. In the last three years, of the 25 construction sites launched worldwide (first concrete pour of the reactor), all are either in China or outside China but carried by the Russian industry, analyses the World Nuclear Industry Status Report (WNISR), a report by independent experts based on public data.

China has been inaugurating more and more units and now surpasses France with 57. Mixing Russian, French, American and Canadian technologies, it is however limited to national projects, or with Pakistan. On the other hand, Russia dominates the international market, with 25 reactors under construction: 5 in Russia and 20 in other countries (Bangladesh, Belarus, China, Egypt, India, Iran, Slovakia and Turkey). These sites were started in the years 2000, 2015 or 2018, the Egyptian in 2022. “What is new is the arrival of countries that until now had no nuclear power: Bangladesh, Egypt…”, notes Mycle Schneider, lead author of WNISR, who sees this as a Russian strategy to “create long-term interdependencies”.

Renewed interest, to be concretized

Against the backdrop of the energy crisis, linked in part to the war in Ukraine, other countries are expressing renewed interest in the atom. Belgium, which chose in 2003 to stop using nuclear power, wants to extend two reactors by ten years. Japan itself has started thinking about the possible construction of new reactors, but the task of restarting even the existing reactors is complicated and public opinion is reluctant.

For Poland, the Czech Republic or India, it is a question of reducing their dependence on coal. Others, such as Sweden and the Netherlands, have expressed an interest in nuclear power.

In this context, the IAEA has raised its projections in 2022 for the second year in a row, anticipating a more than doubling of the world’s installed nuclear capacity by 2050. But “to achieve this, many challenges must be overcome,” the Agency adds, citing “regulatory and industrial harmonization” and the need for “progress in the management of high-level radioactive waste.

Because of its cost and risks, countries as far away as New Zealand remain resolutely against nuclear power. And these differences are reflected within the European Union, in the heated debates in Brussels on support for this energy.

Duke Energy has filed a permit application to assess the feasibility of a nuclear reactor in Stokes County on an existing power generation site, without committing to immediate construction.
The South Korean nuclear regulator has approved the launch of the 1,400-megawatt Saeul 3 reactor, beginning with a six-month pilot phase before full commercial operation.
Ankara confirmed new Russian funding for the Akkuyu project, Turkey’s first nuclear site, strengthening its energy ties with Moscow and advancing its domestic nuclear ambitions.
Niger’s military regime disputes theft allegations by French prosecutors after uranium stock vanished from a nationalised site previously operated by Orano.
Rosatom successfully completed a series of tests on its high-temperature gas-cooled reactor fuel, validating its performance at up to 1,700 °C under prolonged irradiation conditions.
Videberg Kraft AB becomes the first company to request government support to build two new reactors at the Ringhals site, under the national nuclear investment framework adopted in 2025.
The European Commission opens an in-depth investigation into Prague's public funding of a major nuclear project, which could reach €30bn ($32.88bn), with guaranteed revenues over forty years.
Niigata's assembly officially backs the restart of the Kashiwazaki-Kariwa site, marking a key step in Japan’s return to nuclear energy following the 2011 Fukushima disaster.
The Japanese government plans to fund up to 30% of loans required for nuclear projects, aiming to accelerate reactor restarts and double the share of nuclear energy in its energy mix by 2040.
French nuclear reactor developer Newcleo has submitted its lead-cooled small modular reactor design to Euratom, initiating the first regulatory phase to integrate nuclear non-proliferation safeguards at the European level.
French state utility EDF has increased the maximum estimated cost for building six new nuclear reactors to €72.8 billion ($85.29 billion), representing a 40% rise over the original figure.
US-based Holtec has signed a memorandum of understanding with Hungary’s energy group MVM to assess the deployment of its SMR-300 technology, strengthening bilateral nuclear cooperation and opening prospects for a new market in Central Europe.
California-based startup Radiant has secured $300mn to build its first factory in Tennessee and prepare for the mass production of miniature nuclear reactors for off-grid applications.
Terra Innovatum has increased its interactions with the Nuclear Regulatory Commission to advance licensing of its SOLO™ micro-modular reactor, despite the partial shutdown of the US federal government.
The US nuclear regulator has extended the operating licences of three Illinois reactors by 20 years, strengthening Constellation's long-term industrial outlook for the Clinton and Dresden sites.
The SATURNE Industrial Chair aims to develop innovative uranium extraction methods, with joint funding from Orano and the National Research Agency over a four-year period.
US-based X-energy has signed a reservation agreement with South Korea's Doosan Enerbility to secure key components for its small modular nuclear reactors.
Niger expands its mining alliances with Uranium One to develop new sites, while the Dasa project continues seeking financing despite clear political backing.
Samsung Heavy Industries has received Approval in Principle for a floating nuclear plant featuring two SMART100 reactors, marking a step toward the commercialisation of offshore small modular reactors.
The Indian government proposes a unified legal framework for nuclear energy, aiming to boost private investment and increase installed capacity to 100 GW by 2047.

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