Two sites - at Abermule, near Newtown, and Cefn Coch, near Llanfair Caereinion - have been suggested.

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That planned hub on a 20 acre site could be near Abermule outside Newtown or by the more remote village of Cefn Coch.

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According to Nicholas K. Coch, a professor of coastal geology at Queens College in New York City, significant hurricanes have slammed into the region before.

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Meanwhile, Mr Wigley, who will be confirmed as Plaid honorary president at the conference, has told party magazine Triban Coch must change or "the consequences - for the party and for Wales - could be too horrendous to contemplate".

BBC: NEWS | UK | Wales | Plaid must change, warn big guns