Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated August 25, 2005 and March 17, 2006 relating to the consolidated financial statements of SunPower Corporation, which appears in SunPower Corporation’s Annual Report on Form 10-K for the year ended December 31, 2005. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

San Jose, California

January 23, 2007