From Cosmos (5/5/24)…
Small reactors don’t add up as a viable energy source
The nuclear industry has been offering so-called Small Modular Reactors (SMRs) as an alternative to large reactors as a possible solution to climate change.
SMRs are defined as nuclear reactors with a power output of less than 300 megawatts of electricity, compared to the typically 1000 to 1,500 megawatts power capacity of larger reactors.
Proponents assert that SMRs would cost less to build and thus be more affordable.
However, when evaluated on the basis of cost per unit of power capacity, SMRs will actually be more expensive than large reactors.
This ‘diseconomy of scale’ was demonstrated by the now-terminated proposal to build six NuScale Power SMRs (77 megawatts each) in Idaho in the United States.
The final cost estimate of the project per megawatt was around 250 percent more than the initial per megawatt cost for the 2,200 megawatts Vogtle nuclear power plant being built in Georgia, US.
Previous small reactors built in various parts of America also shut down because they were uneconomical.
Reactor containment buildings at Pacific Gas and Electric’s Diablo Canyon Power Plant, the only operating nuclear powered plant in California. (Brian van der Brug / Los Angeles Times via Getty Images