Trawsfynydd Power Station is unique in that the power station was built inland adjacent to a lake which provided cooling water when the station was operational. Trawsfynydd ceased to generate electricity in 1991.
All fuel has been removed from the reactors and decommissioning is well underway. 2010 saw the implementation of the accelerated care and maintenance business case, and activity during the reporting period was focused on the delivery of an accelerated decommissioning plan.