Canadian Solar Signs a 45 Million Euro Annual Sales Contract and Breaks Ground of a 250 MW Module Facility in Changshu, China

Canadian Solar Signs a 45 Million Euro Annual Sales Contract and Breaks Ground of a 250 MW Module Facility in Changshu, China

May 30, 2007

    JIANGSU, China, May 30 /Xinhua-PRNewswire/ -- Canadian
Solar Inc. ("the Company", or "CSI")
(Nasdaq: CSIQ) today announced it has concluded a 2007
annual sales contract worth 45 million Euro with a leading
German customer. CSI has already started to deliver to this
contract in March, before official signing, due to immediate
demand for the products. 

    Concurrently CSI held a ground breaking ceremony for
the new 250 MW module manufacturing facility for its plant
in Changshu, China, located about 100 km west from
Shanghai. The first phase of the new facility is 20,000
square meter in area and is expected to be completed by
November of 2007. When finished, the first phase facility
will have a module production capacity of 250 MW. 
Construction is expected to start in June after receiving
final building permits.

    Dr. Shawn Qu, CEO of CSI, said, "We continue to
execute our business expanding strategy as planned in order
to support our customers' demands and forecasts. Our
insistence on quality products and services is paying off.
The strong demand we are seeing exemplifies CSI
management's strategies of branding CSI as Tier-One in
quality and to form long-term partnership with Tier-One
distributors in every geographic market.  This annual
contract, with firm pricing and delivery schedules until
the end of year, serves as another example of such a
partnership which brings business security and visibility
to both CSI and its customers."

    About Canadian Solar Inc. (Nasdaq: CSIQ) 

    Founded in 2001, Canadian Solar Inc. (CSI) is a
vertically integrated manufacturer of solar cell, solar
module and custom-designed solar application products
serving worldwide customers.  CSI is incorporated in Canada
and conducts all of 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, please visit
http://www.csisolar.com .


    Safe Harbor/Forward-Looking Statements

    Certain statements in this press release including
statements regarding expected future financial and industry
growth are forward-looking statements that involve a number
of risks and uncertainties that could cause actual results
to differ materially. These statements are made under the
"Safe Harbor" provisions of the U.S. Private
Securities Litigation Reform Act of 1995. In some cases,
you can identify forward-looking statements by such terms
as "believes," "expects,"
"anticipates," "intends,"
"estimates," the negative of these terms, or
other comparable terminology. Factors that could cause
actual results to differ include general business and
economic conditions and the state of the solar industry;
governmental support for the deployment of solar power;
future shortage or availability of the supply of
high-purity silicon; demand for end-use products by
consumers and inventory levels of such products in the
supply chain; changes in demand from significant customers,
including customers of our silicon materials sales; changes
in demand from major markets such as Germany; changes in
customer order patterns; changes in product mix; capacity
utilization; level of competition; pricing pressure and
declines in average selling price; delays in new product
introduction; continued success in technological
innovations and delivery of products with the features
customers demand; shortage in supply of materials or
capacity requirements; availability of financing; exchange
rate fluctuations; litigation and other risks as described
in the Company's SEC filings, including its registration
statement on Form F-1 originally filed on October 23, 2006,
as amended. Although the Company believes that the
expectations reflected in the forward looking statements
are reasonable, it cannot guarantee future results, level
of activity, performance, or achievements. You should not
place undue reliance on these forward-looking statements.
All information provided in this press release is as of
today's date, unless otherwise stated, and CSI undertakes
no duty to update such information, except as required
under applicable law.

    For more information, please contact:

    In Jiangsu, P.R. China                  
     Bing Zhu, Chief Financial Officer       
     Canadian Solar Inc.                     
     Tel:   [phone]                 
     Email: [e-mail]                         

    In the U.S.
     David Pasquale
     The Ruth Group
     Tel:   [phone]
     Email: [e-mail]