Tom Starrs, Managing Director Utility and Power Plants, Americas

1. Tom Starrs, Managing DirectorUtility and Power Plants, Americas

2. SunPower 2010 – 25th Anniversary • World-leading solar conversion efficiency • 5,500+ Employees • Diversified portfolio: roofs to power plants • 2010: Revenue $2.15-$2.25B • 550+ MW 2010 production • 1,500 dealer partners, #1 R&C USA • >1.5 GW solar PV deployed • 5 GW power plant pipeline Residential Power Plants Commercial

3. SunPower Technology Highest Efficiency PV • Up to 50% more energy v. standard PV • Up to 100% more energy v. thin-film PV T0 Single-Axis Trackers • Follows the sun’s path across the sky • Captures up to 25% more of the sun’s energy than fixed-tilt systems • Leading experience and reliability: The world’s most widely deployed single axis tracking system Lowest Impact Technology • Maximizes energy output • Reduces land area required • Minimizes impact to species and habitat

4. PV vs. CSP

5. California Valley Solar Ranch www.californiavalleysolarranch.com www.sunpowercorp.com

6. Project Location SunPower/ CVSR First Solar/ Topaz California Valley subdivision 7,200 2.5 acre lots Carrizo Plain National Monument

7. Site Selection – Why California Valley? • Balance between technical, environmental, and policy considerations • Best solar resource in PG&E service territory • 315 sunny days/yr / higher elevation / lower temps • Protected from coastal and valley fog / low humidity • Flat, remote site, sufficient for large scale PV • Adjacent to existing high-voltage transmission & highway infrastructure • Restoration of 2 abandoned gypsum mines • Identified in County General Plan Energy Element as “crucial location of high solar potential”

8. California Valley Solar Ranch Site – 2008 Photo

9. California Valley Solar Ranch – 2008 Photo

10. California Valley Solar Ranch – 2008 Photo

11. Original Design with T20 Trackers • Date: Q1 2009 • Arrays & Bldg – 1,935 acres • Design emphasis: • Maximize use of flat areas • Minimize grading • Incorporate wildlife corridors • GKR impacts: • Not measured • Not known to be present at the time Wildlife corridors Focus on flattest land

12. Redesign with T0 Trackers – CEQA Alternative #1 • Date: Q1 2010 • Arrays & Bldg – 1,793 acres • Design emphasis: • Reduce impact on presence of GKR • Widen wildlife corridors • Reduce visual impacts from SR 58 • GKR impacts: • 50% of known precincts impacted

13. Redesign to Avoid GKR - CEQA Alternative #2 • Date: Q2 2010 • Array & Bldg – 1,977 acres • Design emphasis: • Reduce impact on presence of GKR • GKR impacts: • 25% of known precincts impacted

14. Redesign to Avoid GKR - CEQA Alternative #3 • Date: Q2 2010 • Arrays & Bldg – 2,231 acres • Design emphasis: • Consider acquisition of more land to minimize impact on presence of GKR • GKR impacts: • Now only 11% of known precincts impacted Core GKR area Proposed addition to project site

15. “M3” – Mitigated CEQA Alternative #3 • Date: Q4 – 2010 • Design emphasis: • Maximize GKR avoidance • Increase slope tolerance • Refine borders for efficiency • Retain full MW capacity • GKR impacts: • Now only 9% of known precincts impacted Core GKR area Proposed addition to project site and expanded corridor

16. APPENDIX / PHOTOS

17. Visual Simulation (looking to Northwest) Visual Simulation of Project looking to Northwest

18. Visual Simulation (from Hwy 58 looking to East) Visual Simulation of Project from Highway 58 looking East

19. Construction – Tracker Piers Installed

20. Construction - Tracker Supports Installed

21. T0 Tracker - Architecture

22. T0 Tracker Rows – Close Up View

23. T0 Tracker – Close Up View

24. Seeding After Construction

25. Grazing Sheep To Manage Vegetation