Deiseb a wrthodwyd Oppose the development of nuclear power stations on new sites in Wales

There is a proposal by a US owned company to develop a new nuclear power station in the Llynfi valley. If this is allowed to go ahead it could open the door to numerous privately owned nuclear power stations across Cymru.

The unsolicited proposal is of concern to communities for many reasons, including the prospect of radioactive waste being in situ for a minimum of fifty years.

Wales has an abundance of other forms of energy generation available which are safer, quicker and cheaper.

Rhagor o fanylion

Micro nuclear reactors, including Small Modular reactors (SMRs), are unproven technology.

Nuclear power is not renewable. It needs uranium, a finite resource, harmful to health from the mining stage.

Fission produces radioactive waste, including plutonium. This needs to be kept on site for a long period. Currently no disposal sites exist for the waste after the operation/cooling period of 50 years. Enriched uranium has a half life > 700 million years.

UK nuclear submarines, using this 1960s design, stored since the 1990s have yet to be decommissioned. The two nuclear sites in Wales (Wylfa and Trawsfynydd) won't be fully decommissioned until beyond 2080.

Wales is still facing clean up costs from the extraction of natural resources such as coal tips and contaminated sites.

Wales has an abundance of other forms of energy solutions, including solar, wind, hydro storage, geothermal energy and tidal, none needing armed guards 24/7 or major incident response plans for schools.

Pam gwrthodwyd y ddeiseb hon?

Mae’n ymwneud â rhywbeth nad yw’r Senedd na Llywodraeth Cymru yn gyfrifol amdano.

Dim ond deisebau nad ydynt yn bodloni’r safonau ar gyfer deisebau y byddwn yn eu gwrthod

Mae deisebau a wrthodwyd yn cael eu cyhoeddi yn yr iaith y cawsant eu cyflwyno ynddi

Dyddiad cyflwyno 25 Awst 2026
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