Small Modular Reactors: A Costly and Unproven Solution to the UK's Energy Transition

Strategic Insights -

As the UK government invests £2.5bn in small modular reactors (SMRs), a technology that is not yet proven at scale, critics argue that it is a costly and precarious solution to the country's energy needs. The Institute for Energy Economics and Financial Analysis (IEEFA) has reported actual cost overruns of 300% to 700% for all four SMR projects worldwide, with Rolls-Royce claiming costs of £35 to £50 per MWh, which may be tripled due to the lack of economies of scale.

Key Takeaways:

  • The UK government's £2.5bn investment in SMRs is 10 times more than Great British Energy has invested in simple, cheap rooftop solar, which democratizes energy savings.
  • The IEEFA has concluded that SMRs are "still too expensive, too slow and too risky" and that renewables, not SMRs, are the near-term solution to the energy transition.
  • The government's reliance on SMRs may increase the risk of nuclear waste security threats and importation of uranium from countries with questionable environmental records.
  • Experts have expressed concerns about the lack of transparency in the government's SMR funding, which may divert resources away from local energy initiatives and undermine the development of cutting-edge renewable energy technologies.
  • The UK's reliance on SMRs may lead to increased costs and diminished energy security due to the failure to account for the true costs of nuclear waste disposal and the risks associated with pressurized water reactors.

Statistics:

  • The UK government's £2.5bn investment in SMRs is 10 times more than Great British Energy's investment in rooftop solar.
  • The IEEFA has reported actual cost overruns of 300% to 700% for all four SMR projects worldwide.
  • Rolls-Royce is proposing a 470MW reactor, the same size as the first-generation Magnox reactors.
  • The UK's reliance on SMRs may lead to increased costs of up to £100 per MWh due to the lack of economies of scale.

Sources:

  • (10 June) "Rolls-Royce named winning bidder for UK small nuclear reactors"
  • (10 June) "Sizewell C power station to be built as part of UK's £14bn nuclear investment"
  • Institute for Energy Economics and Financial Analysis (IEEFA), citing "actual cost overruns of 300% to 700% for all four projects"
  • Rolls-Royce claims costs of £35 to £50 per MWh