IEA: Nuclear power can play a major role in enabling secure transitions to low emissions energy systems
July 05, 2022

IEA: Nuclear power can play a major role in enabling secure transitions to low emissions energy systems

As the world contends with a global energy crisis, nuclear power has the potential to play a significant role in helping countries to securely transition to energy systems dominated by renewables, according to a new special report by the International Energy Agency (IEA).

In countries that choose to continue or increase their use of nuclear power, it can reduce reliance on imported fossil fuels, cut carbon dioxide emissions and enable electricity systems to integrate higher shares of solar and wind power.

Nuclear power can reduce reliance on imported fossil fuels and cut carbon dioxide

Nuclear is today the second largest source of low emissions power after hydropower, with nuclear plants in 32 countries. About 63% of today’s nuclear generating capacity comes from plants that are more than 30 years old, since many were built in the aftermath of the 1970s oil shocks. But a range of both advanced and emerging economies have recently announced energy strategies that include substantial roles for nuclear.

IEA: Nuclear power can play a major role in enabling secure transitions to low emissions energy systems

“In today’s context of the global energy crisis, skyrocketing fossil fuel prices, energy security challenges and ambitious climate commitments, I believe nuclear power has a unique opportunity to stage a comeback,” said IEA Executive Director Fatih Birol. “However, a new era for nuclear power is by no means guaranteed. It will depend on governments putting in place robust policies to ensure safe and sustainable operation of nuclear plants for years to come – and to mobilise the necessary investments including in new technologies.”

“Nuclear power has a unique opportunity to stage a comeback”, said IEA Executive Director

In the IEA’s global pathway to reach Net Zero Emissions by 2050, nuclear power doubles between 2020 and 2050, with construction of new plants needed in all countries that are open to the technology.

A total of 19 countries currently have nuclear reactors under construction, demonstrating the recent momentum behind nuclear power that is likely to be further stimulated by recent spikes in oil, gas and electricity prices. At the same time, nuclear power faces public and political opposition in some countries, and the IEA makes no recommendations to countries that choose not to make use of it in their energy mix.

In the IEA’s Net Zero by 2050 pathway, half of the emissions reductions by mid-century come from technologies that are not yet commercially viable. This includes Small Modular Reactors (SMRs), which are generally defined as advanced nuclear reactors with a capacity of less than 300 megawatts – or about one-third of a traditional plant. The lower cost, smaller size and reduced project risks of SMRs may improve social acceptance and attract private investment. There is increased support and interest in Canada, France, the United Kingdom and the United States for this promising technology. The successful long-term deployment of SMRs hinges on strong support from policy makers starting now, not just to mobilise investment but also to streamline and harmonize regulatory frameworks, adds the IEA.

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