How Britain was overtaken in the mini-nuke revolution - Part 223 Mar 2023 06:46
The arrival of cheap, abundant gas from the North Sea led to investment in methane-driven power stations that came online from the early 1990s, said Paul Norman, professor of nuclear physics and nuclear energy at the University of Birmingham. Cheap, safe and easy-to-burn natural gas made nuclear seem risky and expensive.
Nuclear's image was also tarnished by Chernobyl and Fukushima, and the cost of project overruns.
A fear of eye-watering costs and large upfront spending may well be what is putting the Government off, says Jim Watson, a professor of energy policy and director at UCL Institute for Sustainable Resources.
“We really don't know how much these things are going to cost once they build one, and how long they're going to take to build,” he says, pointing out that demonstrator plants are still some way off.
The next nuclear power plant to come online in the UK, Hinkley Point C, will cost as much as £32.7bn for 3,200 megawatts, or £10.2m a megawatt.
By comparison, Rolls-Royce’s 470MW SMRs are promised for £1.8bn, or £3.8m per megawatt.
However, the company is still offering larger – and more expensive – options than US rivals.
Last Energy’s £100m modular units, which are two-thirds the size of a football pitch, can output 20MW of electricity, enough to power 40,000 homes. They will be deployed in 2026 with no government funding required. NuScale’s reactors will offer 77MW of power apiece.
Last Energy
Last Energy £100m modular units can output 20MW of electricity, enough to power 40,000 homes CREDIT: Last Energy
Rolls is joined by a clutch of other UK-based companies that are at various stages of development, including MoltexFLEX, a Warrington-based developer of so-called advanced modular reactors (AMRs), the next generation of the devices.
The company is developing what it claims is a safer reactor that would use liquid chemicals instead of high pressure gas. In any disaster, chemicals would solidify as they hit cool air, rather than blowing into the atmosphere as happens with gas.
Moltex is aiming to make electricity for about £30 per megawatt hour and heat for about £10/MWh, a fraction of today’s prices and also cheaper than before Russia’s war on Ukraine, by using off-the-shelf parts as much as possible.
Chief executive David Landon has said that he wants to be able to build a demonstrator for his reactor by 2029. Freeing up Britain’s old coal-fuelled power station sites for nuclear generation would help, since they are already attached to the grid.
Yet despite being based in Britain, the company is having more success abroad.
Working with regulators in Canada, the company’s sister operation has been able to move faster towards approval for its designs. Landon said last month that the UK government should consider how to speed up the deployment of AMRs, and requested earlier access to the Office for Nuclear Regulation, and early identification of suitable sites.