Small nuclear reactors (SMRs) still have plenty to prove

Christina Macpherson

February 17

Britain's MPs are not paid to be polite. So it must have been with some restraint that the members of the environmental audit committee described the government's nuclear strategy this week as "lacking clarity", not least over small modular reactors.

Lacking clarity? You can think of better ways to describe the financially
radioactive shambles, complete with Rishi Sunak's fantasy "road map".
He's glibly promising 24 gigawatts of capacity by 2050 — either another
seven Hinkley Point Cs or a mix of them and SMRs.

Surely he's spotted what's going on with that Somerset nuke? Costs up from £18 billion to as
much £35 billion in 2015 prices, or £46 billion in today's money, with
its start-up likely to be delayed six years to 2031.

Maybe he hasn't, because he's planning a lookalike for Sizewell C in Suffolk, built by the
same French-backed EDF. Only this time it won't be EDF but consumers and
the taxpayer on the hook for the construction cost overruns. As the
committee chairman Philip Dunne noted: "The UK has the opportunity to be
a genuine world leader in the manufacture of SMR nuclear capability with
great export potential." But despite the taxpayer lobbing in £215
million to support their development, MPs are right to see a deficit on the
"clarity" front.

As Professor Steve Thomas from the University of
Greenwich says: "SMRs are up to a decade behind large reactors in terms
of their commercial development and their economics are speculative and
untested." Rolls's are 470 megawatts, one seventh of the 3.2GW Hinkley.

But who knows if it really can build them for £2.5 billion a pop? Or
whether it'll prove feasible to cram several on a single site. In
November Utah Associated Municipal Power Systems canned a project to build
six 77MW NuScale SMRs at a site in Idaho. And even if they'd be far
smaller than Hinkley, they'd still need to be just as safe. Will safety
issues drive up costs? Also, who's paying for them? Consumers, the
taxpayer, the private sector? And what's the cost versus alternative
energy technologies?

Times 15th Feb 2024

https://www.thetimes.co.uk/article/shameful-shambles-over-mega-nukes-d6wzvp33v