EXHIBIT A: Joint Filing Agreement

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with the other Reporting Person (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.00001 per share, and American Depositary Shares, each representing 100 ordinary shares, of Trina Solar Limited, a Cayman Islands company, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

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Signature Page

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of the 10th day of February 2009.

Jifan Gao	/s/ Jifan Gao
	Jifan Gao
Wonder World Limited	By:	/s/ Gwen Dodge /s/ Peter Talavera
		Name:	Gwen Dodge/Peter Talavera
		Title:	Authorized Signatories for and on behalf of Fiduciary Services Limited as sole director of Wonder World Limited