South Down MP Margaret Ritchie says locals must use their 'campaigning zeal' against a planned nuclear plant.
Three reactors have been earmarked for a site in Cumbria near Sellafield.
Site investigations at Moorside will be finalised soon.
Mrs Ritchie says the effects of Sellafield on the Down coastline have been recently proven.
She says a new plant would multiply safety risks.
Education Authority boss hits out at criticisms of public services
Man in 90s dies following Co Down road crash
Police to increase patrols after second incident of shots being fired in Belfast
Woman charged over theft of campaigner’s car ‘must stay out of Belfast’
Bluetongue restrictions in Northern Ireland will be relaxed from Friday