Opti Canada (OPCDF) 40-F/A 2008 FY Annual report (Canada) (amended)

Exhibit 99.4

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT

TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

 In connection with the Amendment No. 1 to the Annual Report of OPTI Canada Inc. (the “Company”) on Form 40-F for the year ended December 31, 2008, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Travis Beatty, Vice President, Finance & Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

 1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

 By: /s/ Travis Beatty

Travis Beatty

Vice President, Finance and Chief Financial Officer

 June 3, 2009