GDF Suez Executive Vice-President and Chief Financial Officer Isabelle Kocher (left) and CNR Chairman Elisabeth Ayrault attend a ceremony to celebrate the 80th anniversary of the CNR, French electricity generation company Compagnie Nationale du Rhone, in Pierre-Benite near Lyon. The GDF Suez board will next week consider a proposal that Kocher take up a role as number-two at the French utility, reports said, a move that could put her in line to be its new boss.