FORM 6-K ---------- SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 REPORT OF FOREIGN ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE MONTH OF APRIL 2007 COMMISSION FILE NUMBER: 001-33107 ---------- CANADIAN SOLAR INC. ---------- XIN ZHUANG INDUSTRY PARK, CHANGSHU, SUZHOU JIANGSU 215562 PEOPLE'S REPUBLIC OF CHINA (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) ---------- Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. Form 20-F X Form 40-F ----- ----- Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ------ Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ------ Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes No X ----- ----- If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- N/A ------- - --------------------------------------------------------------------------------

CANADIAN SOLAR INC. Form 6-K TABLE OF CONTENTS

PAGE ----- Signature 3 Exhibit 99.1 -- Press Release 4

SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. CANADIAN SOLAR INC. By: /s/ Bing Zhu ------------------------ Name: Bing Zhu Title: Chief Financial Officer Date: April 23, 2007

Exhibit 99.1 (Canadian Solar Inc. LOGO) CANADIAN SOLAR SCHEDULES FIRST QUARTER 2007 RESULTS CONFERENCE CALL JIANGSU, CHINA, APRIL 13, 2007, Canadian Solar Inc. ("the Company") (Nasdaq: CSIQ) today announced that it will hold a conference call with investors and analysts on Monday, May 14, 2007 (in Jiangsu) at 9 p.m. to discuss results for the Company's first quarter 2007 and business outlook. This will be 9 a.m. in New York on Monday, May 14, 2007. The news release announcing the first quarter 2007 results will be disseminated on May 14, 2007 before the Nasdaq stock market opens. The dial-in number for the live audio call beginning at 9 p.m. (in Jiangsu) on Monday, May 14, 2007 or 9 a.m. (in New York) on Monday, May 14, 2007 is +1-800-322-2803 or +1-617-614-4925 (international). The passcode is 46828385. A live webcast of the conference call will be available on Canadian Solar's website at www.csisolar.com. A replay of the call will be available 1 hour after the conclusion of the conference call through noon on Monday, May 21, 2007 (in Jiangsu) or midnight on Monday, May 21, 2007 (in New York) at www.csisolar.com and by telephone at +1-888-286-8010 or +1-617-801-6888 (international). The passcode to access the replay is 89796178. ABOUT CANADIAN SOLAR INC. Founded in 2001, Canadian Solar Inc. (CSI) is a vertically integrated manufacturer of solar module and customer-designed solar application products serving worldwide customers. CSI is incorporated in Canada but conducts its manufacturing operations in China. Backed by years of experience and knowledge in the solar power market and the silicon industry, CSI has become a major global provider of solar power products for a wide range of applications. For more information visit www.csisolar.com. CONTACTS:

In Jiangsu P.R. China In the U.S. - --------------------- ----------- Bing Zhu, Chief Financial Officer David Pasquale Canadian Solar Inc. The Ruth Group phone: 86-512-62696755 phone: +1-646-536-7006 ir@csisolar.com dpasquale@theruthgroup.com
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