Nuclear Decommissioning, 120 years, £260 billion

The Nuclear Decommissioning Authority (NDA) has published its latest

strategy, setting out its long-term roadmap for safely decommissioning the
UK’s 17 legacy nuclear sites. But the engineers capable of doing the work
are retiring faster than they can be replaced. The updated strategy builds
on progress made over the last 20 years and reflects how the operating
environment and mission scope have evolved, says NDA Group chief executive,
David Peattie. The level of complexity involved is reflected in the total
cost of the programme. Estimates shift constantly, but the current figure
stands at about £260bn, with the NDA spending upwards of £1.9bn annually
across its supply chain, indirectly supporting 40,000 jobs. Current plans
indicate it will take 120 years to complete the main clean-up and waste
management work, with the final end state (releasing the land for other
uses) not expected until 2380. That makes it one of the longest-running,
most expensive public commitments in British history. Sustaining it depends
on a continuous supply of people with the right skills. The challenge is
that growing workforce demands come at a time when all areas of nuclear are
booming – and competing for talent – simultaneously. Close to 100,000
people now work across the UK nuclear sector, a 55% increase over the past
decade, driven by new build projects, defence programmes and
decommissioning. An additional 40,000 workers are reportedly needed by
2030. What makes the pipeline challenge particularly acute for
decommissioning is the nature of the expertise involved. Retiring engineers
carry with them the accumulated, often tacit understanding of how aging
facilities actually behave, as opposed to how they were designed to behave.

iMech 11th March 2026

https://www.imeche.org/news/news-article/why-the-uk-s-nuclear-boom-is-adding-urgency-to-a-120-year-clean-up-project