POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS
WHEREAS, ABITIBIBOWATER INC., a Delaware corporation (the Company), proposes shortly to file with
the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934
as amended (the Act), the Annual Report on Form 10-K pursuant to Section 13 or 15 (d) of the Act.
WHEREAS, each of the undersigned is a Director of the Company.
NOW, THEREFORE, each of the undersigned hereby constitutes and appoints David J. Paterson, William
G. Harvey and Jacques P. Vachon and each of them, as true and lawful attorneys-in-fact and agents,
and each of them with full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said Annual Report and any and all amendments
thereto, and any and all other documents in connection therewith, with the Securities and Exchange
Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them
may lawfully do or cause to be done by virtue hereof.