Free Writing Prospectus

Issuer Free Writing Prospectus filed pursuant to Rule 433

supplementing the Preliminary Prospectus dated May 21, 2007

Registration No. 333-142970

May 31, 2007

Trina Solar Limited

In response to questions from certain institutional investors concerning certain financial and operating data of Trina Solar Limited (the “Company”) and a competitor in the same industry, the Company provided certain investors with the following information:

1Q2007 Selected Consolidated Financial and Operations Data

 

     Trina Solar Limited     Yingli Green Energy
Holding Co., Ltd.
 

1Q2007 Financial Analysis (US$000s)

    

Revenue

   42,548     55,489  

Gross Profit

   9,508     11,603  

Gross Margin

   22 .3%   20 .9%

Operating Profit

   4,468     5,305  

Operating Margin

   10 .5%   9.6 %

Net Income

   4,706 (1)   2,899 (2)

Net Margin

   11 .1%   5 .2%
(1)   Net Income from Continuing Operations
(2)   Net Income before Minority Interest

 

     Trina Solar Limited    Yingli Green Energy
Holding Co., Ltd.

2007 Capacity (MW)

   1Q    2Q    3Q    4Q    1Q

Ingot

   75    100    100    150    95

Wafer

   75    100    100    150    95

Cell

   0    50    75    150    90

Module

   75    100    100    150    100

 

     Trina Solar Limited    Yingli Green Energy
Holding Co., Ltd.

2008 Capacity (MW)

     

Ingot

   350    400

Wafer

   350    400

Cell

   350    400

Module

   350    400

Source: Trina Press Release (May 21, 2007); Yingli Form F-1/A Filing (May 22, 2007)

The Company has filed a registration statement (including a prospectus) with the Securities and Exchange Commission (“SEC”) for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the Company has filed with the SEC for more complete information about the Company and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the Company, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling toll-free 1-866-500-5408.

IMPORTANT INFORMATION ABOUT THE INFORMATION DESCRIBED ABOVE

The information described above should be balanced against the more complete information provided in the Company’s registration statement. In particular, investors should read the information above together with the disclosures made in the preliminary prospectus to which this offering relates under “Risk Factors” and “Special Note Regarding Forward-Looking Statements.” Certain of the information described above is taken from publicly available data of third parties and the Company has not independently verified the accuracy of such information.