Trawsfynydd Power Station, Trawsfynydd, Blaenau Ffestiniog, Gwynedd, LL41 4DT

❰ View on Map Updated: 1 year ago



There is parking by Llyn Trawsfynydd Cafe, where you can see the power station clearly. There is no public access to the power station.

Brief Description:

Trawsfyndd nuclear power station that opened in March 1965. It is now a disused Magnox power station that decommissioned in 1991.

"The power station, which takes its name from the nearby village of Trawsfynydd, was designed by Basil Spence.[3] The construction, which was undertaken by a consortium involving Crompton ParkinsonInternational CombustionFairey Engineering and Richardsons Westgarth, and known as the Atomic Power Constructions (APC),[4] began in July 1959, and both of the reactors were in operation by March 1965, with the station opening fully in October 1968, at a cost of £103 million.[5] It had two Magnox reactors producing 470 megawatts (MW) in total.[5] The reactors were supplied by APC and the turbines by Richardsons Westgarth.[5] The civil engineering work was undertaken by Holland, Hannen & Cubitts[6] and Trollope & Colls.[7] The architectural consultant for the buildings was Sir Basil Spence and the landscape architect was Sylvia Crowe.[8] 

The Welsh government has decided to redevelop the plant using small-scale reactors, as a step toward meeting the UK's targets for reducing carbon emissions. In 2021, the government chose Mike Tynan of Westinghouse to lead a company tasked with developing the new reactors.[2] On 20 May 2022 the Government announced that the NDA will work with Cwmni Egino (the Welsh Development Agency company) to develop land adjacent to the site for a 300MW small modular reactor. Cwmni Egino said it will now discuss with interested parties and hoped to announce plans within one year.[19]"

Further Information:


Power Station, Trawsfynydd, Blaenau Ffestiniog, Gwynedd, LL41 4DT.

Email: and Llyn Trawsfynydd Cafe enquiries only ( No boat bookings or fishing enquieries) - email - Phone - 01766 540780


01766 543210, former number for Trawsfynydd Power station 

Website: and

Opening Hours:

Viewable from Llyn Trawsfynydd and Canolfan Prysor Centre, Canolfan Prysor Centre Cafe and Fishing Centre, Llyn Trawsfynydd Lake

LL41 4DT


Trawsfynydd Power station is approx. 9 miles to the South of Blaenau Ffestiniog, along the A496. OS SH 689382.


For further travel information in Wales please see:

Or call Traveline Cymru on 0800 464 0000


At Llyn Trawsfynydd;

There is a huge variety of places to eat, drink and stay in Blaenau Ffestiniog, all with stunning views.

Travel Information

For further travel information in Wales please see:

Or call Traveline Cymru on 0800 464 0000