EXHIBIT 31.1
CERTIFICATIONS
I, Thomas H. Werner, certify that:
| 1. | I have reviewed this Annual Report on Form 10-K/A of SunPower Corporation; |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: September 17, 2010
| | /s/ THOMAS H. WERNER |
| | Thomas H. Werner |
| | President and Chief Executive Officer |
| | (Principal Executive Officer) |
