Nuclear power station decommissioning reaches major milestone

Summarised from North Wales Chronicle's report · Updated 9 Oct, 13:49 · Archive

Nuclear Restoration Services has handed over the reactor buildings area at Trawsfynydd to contractor Costain for a reactor height reduction programme.

Nuclear Restoration Services (NRS) has formally handed over the reactor buildings area at Trawsfynydd to principal contractor Costain, marking the start of the next phase of decommissioning the former nuclear power station. Costain was awarded the contract in October 2025 to deliver a reactor height reduction programme.

The project aims to reduce the height of both reactor buildings by nearly half, dramatically altering the site's skyline. It is expected to create more than 100 jobs with Costain at its peak, offering a boost to employment, skills development and economic growth in the region. Tom Williams, site director at NRS Trawsfynydd, said the project would create opportunities for local people and businesses and help inform future decommissioning programmes across the wider NRS estate.

Read the report

• Major milestone reached in decommissioning of former nuclear power stationA major milestone has been reached in the decommissioning of a former nuclear power station.North Wales Chronicle · 9 Oct, 05:00

In this story: Nuclear Restoration Services · Costain · Trawsfynydd

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