Where duly justified on the grounds of extraordinary circumstances, such as on grounds of overriding safety reasons where the repowering project impacts substantially on the grid or the original capacity, size or performance of the installation, that one-year period may be extended by up to one year.
I gcás a bhfuil bonn cirt cuí leis ar fhorais gurb ann d'imthosca urghnácha, amhail ar fhorais cúiseanna sábháilteachta sáraitheacha i gcás ina mbíonn tionchar mór ag an tionscadal athchumhachtaithe ar an eangach nó ar acmhainn bhunaidh, ar mhéid nó ar fheidhmíocht na suiteála, is féidir an teorainn ama sin a shíneadh suas go bliain amháin eile.