There Is Not Enough Time for Nuclear Innovation to Save the Planet

By Allison Macfarlane //

Nuclear reactors worldwide are aging and, for the most part, are not being replaced as they are shut down. In 2019, for instance, six reactors started operations and 13 units were shut down. The average age of the world’s 408 operating reactors in 2020 was 31 years, with 81 of them over the age of 41 years. //

For all these reasons, nuclear energy cannot be a near- or perhaps even medium-term silver bullet for climate change. Given how many economic, technical, and logistical hurdles stand in the way of building safer, more efficient, and cost-competitive reactors, nuclear energy will not be able to replace other forms of power generation quickly enough to achieve the levels of emission reduction necessary to prevent the worst effects of climate change.

Innovations in reactor designs and nuclear fuels are still worthy of significant research and government support. Despite its limitations, nuclear power still has some potential to reduce carbon emissions—and that is a good thing. But rather than placing unfounded faith in the ability of nuclear power to save the planet, we need to focus on the real threat: the changing climate. And we need strong government support of noncarbon-emitting energy technologies that are ready to be deployed today, not ten or 20 years from now, because we have run out of time. We cannot wait a minute longer.