Eric Gamache, a spokesman for Marois, gave the confirmation after a coalition of activitists opposing the plant demanded assurances from the premier-designate.
The activists spoke as a new film, "Gentilly Or Not To Be," opened. It questions the safety of having the nuclear plant.
The government of outgoing Premier Jean Charest decided in 2008 to rebuild the plant at a cost of about $2 billion but stopped work after the Fukushima disaster in Japan in 2011.
Donald Martel, the newly elected Coalition party member for the area where the plant is located, says he favours rehabilitating the site but not at any price.
He says he hopes the PQ government doesn't make a hasty decision.
A decision on the plant will have to be made quickly — its licence ends this year.