Prospectus Supplement to the Short Form Base Shelf Prospectus Dated September 21, 2009

No securities regulatory authority has expressed an opinion about these securities and it is an offence to claim otherwise. This prospectus supplement (the ‘‘Prospectus Supplement’’), together with the accompanying short form base shelf prospectus dated September 21, 2009 to which it relates, as amended or supplemented (the ‘‘Prospectus’’), and each document incorporated by reference into this Prospectus Supplement and into the Prospectus constitutes a public offering of these securities only in those jurisdictions where they may be lawfully offered for sale and therein only by persons permitted to sell such securities. See ‘‘Plan of Distribution’’. Information has been incorporated by reference in this Prospectus Supplement from documents filed with securities commissions or similar authorities in Canada. Copies of the documents incorporated herein by reference may be obtained on request without charge from the Corporate Secretary of TransCanada Corporation