[SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) Canadian Solar Inc. (Name of Subject Company (Issuer)) Canadian Solar Inc. (Names of Filing Persons (Offerors)) 6.0% Convertible Senior Notes due 2017 (Title of Class of Securities) 136635 AA 7 (CUSIP Number of Class of Securities) Michael G. Potter Chief Financial Officer 545 Speedvale Avenue West Guelph, Ontario, Canada N1K] [PUT RIGHT PURCHASE OFFER 6.0% CONVERTIBLE SENIOR NOTES DUE 2017 ISSUED BY CUSIP Number: 136635 AA 7 Indenture Company Trustee Paying Agent Conversion Agent Securities Holders Option Purchase Date Reference is made to the indenture dated as of December 10, 2007 (the “ NOTICE IS HEREBY GIVEN Option Purchase Price Put Option Repurchase Election Notice Expiration Date The Conversion Rate]