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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 2)*

Canadian Solar Inc.

(Name of Issuer)

Common Shares, no par value

(Title of Class of Securities)

136635 10 9

(CUSIP Number)

December 31, 2008

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

     o Rule 13d-1(b)

     o Rule 13d-1(c)

     þ Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

TABLE OF CONTENTS

CUSIP No. 136635 10 9 

1	NAMES OF REPORTING PERSONS Shawn (Xiaohua) Qu
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a)   o
	(b)   o
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION
	Canada
		5	SOLE VOTING POWER
NUMBER OF			13,530,000 common shares
SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0
EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			13,530,000 common shares
WITH:		8	SHARED DISPOSITIVE POWER
			0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	13,530,000 common shares
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
	o
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
	37.4%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	IN

ITEM 1(a).	NAME OF ISSUER:
	Canadian Solar Inc.
ITEM 1(b).	ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICES:
	199 Lushan Road
	Suzhou New District
	Suzhou 215129
	People’s Republic of China
ITEM 2(a).	NAME OF PERSON FILING:
	Shawn (Xiaohua) Qu
ITEM 2(b).	ADDRESS OF PRINCIPAL BUSINESS OFFICE, OR, IF NONE, RESIDENCE:
	Shawn (Xiaohua) Qu
	c/o Canadian Solar Inc.
	199 Lushan Road
	Suzhou New District
	Suzhou 215129
	People’s Republic of China
ITEM 2(c).	CITIZENSHIP:
	Canada
ITEM 2(d).	TITLE OF CLASS OF SECURITIES:
	Common Shares
ITEM 2(e).	CUSIP NUMBER:
	136635 10 9
ITEM 3.	Not Applicable
ITEM 4.	OWNERSHIP:
	The following information with respect to the ownership of the Common Shares of the issuer by each of the reporting persons is provided as of December 31, 2008:

Number of shares as to which the person has:

Shared

Sole power to

Shared power

power to

dispose or

to dispose or

Amount

Sole power to

vote or to

to direct the

to direct the

beneficially

Percent

vote or direct

direct the

disposition

disposition

Reporting Person

owned:

of class:

the vote:

vote:

of:

of:

Shawn (Xiaohua) Qu

13,530,000

37.4

%

13,530,000

0

13,530,000

0

ITEM 5.	OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:
	Not applicable
ITEM 6.	OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON:
	Not applicable
ITEM 7.	IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY:
	Not applicable
ITEM 8.	IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:
	Not applicable
ITEM 9.	NOTICE OF DISSOLUTION OF GROUP:
	Not applicable
ITEM 10.	CERTIFICATION:
	Not applicable

SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 6, 2009

/s/ Shawn (Xiaohua) Qu  

Shawn (Xiaohua) Qu