Established and Proven Technology Leader

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1 WELCOME TO SUNPOWER

2 Why Partner with SunPower? Worldwide footprint Over 500 systems on 4 continents Over 1 GW of solar manufactured Over 85 patents and 25 years of R&D Over a quarter century of experience 5,500 Employees: all we do is solar World record cell efficiency of 24.2% Ramping to 2GW annual production capacity 2012 Over 1000 Partners and growing rapidly worldwide Publicly traded (NASDAQ) Profitable and growing, with a strong balance sheet Established and Proven Technology Leader 3

3 Solar Experts for Over 25 Years We remain on the cutting edge of solar technology- world record efficiency of 24.2% 4

4 Over 120 Patents Protect our Competitive Advantage

5 Leader in Multiple Applications SunPower is Number 1: Residential Commercial Utility Project Largest Residential Partner Network in Australia. Best Award winning Commercial installation in Australia Largest Largest Utility install in Australia; W.A Pilbara region Multiple Awards 6

6 Global Presence Germany Switzerland Hawaii California New Jersey Spain Italy Singapore South Korea Philippines Regional HQ Australia Regional Office As the leader in delivering innovation and complete solar energy solutions to our customers, we work as a team to continually set new standards for systems performance, value, appearance and customer experience 7

7 CELL TECHNOLOGY

8 Revolutionary Cell Technology Achieving the highest efficiency AND energy production starts with SunPower s proprietary all-back contact solar cell design All-Back Side Contacts Front Side No Grid lines 9

9 SunPower s Cell Architecture No shading gridlines equal larger exposed surface for light capture. Wider and thicker electrical contacts deliver more current and voltage. Backside mirror reflects sunlight that has not yet been absorbed back into the cell. 10

10 SunPower Cells Lightly doped front diffusion Mirror Localised Junctions SunPower Solar Cell 24.2% efficiency Texture & anti-reflective coating (ARC) Backside Contacts N Type Silicon Passivation Layer Lightly doped front diffusion: Increase electricity capture within the cell Texture & antireflective coating (ARC): Improved refraction of light into cell. Passivation Layer: Increase electricity capture within the cell Backside contacts: Eliminate shadowing and high coverage metal reduces resistance loss Localised Junctions: Increased electricity capture within the cell Mirror: Backside mirror (reduces back light absorption and increases light trapping) 11

11 How SunPower Cells Achieve Record Efficiencies Lightly doped front diffusion Mirror Texture and ARC Back Contact Texture & anti-reflective coating (ARC) N Type Silicon Localised Junctions Front Contacts Aluminum Paste Passivation Layer Backside Contacts N-Type Junction P-Type Silicon 1. Maximum light capture - Up to 10% more sunlight on front surface 2. Reduced Resistive losses - Back contacts enable wider and thicker, lower resistance contacts 3. Minimum Recombination Loss - Passivating Silicon dioxide on front and back of cell minimizes recombination loss. 4. Maximum Absorption of Light - Back-side mirror gives photons a second chance to generate power. 12

12 No Light-Induced Degradation (LID) Power loss from crystalline module degradation causes a big headache for the industry. Conventional p-type silicon cells lose up to 3% of their power and production capability during their first few weeks of operation ( break-in period ). SunPower s n-type silicon solar cells have noloss of power due to LID. 13

13 More Light More Energy SunPower technology captures more light Premium, specially treated silicon No front gridlines nothing to block light Wide, thick metal contacts conduct more current Backside mirror reflects light back into the cell Captured light is converted into more energy Performs better in high and low temperatures Maintains performance level better over time Absorbs more colors in the spectrum Captures more sunlight in low-light conditions 14 14

14 High-Area Cells Higher Cell Boosts Efficiency, While Cost-Neutral at System Level The higher cell provides 3.2% more power at cell level and 2.5% more power at module level than the current dominant solar cell used in current SunPower products 3.2% more cell area Current Cell 300 Series Panels New Cell E19 Series Panels 15

15 AR Glass Features and Cosmetics AR glass cosmetics are slightly different from standard Non-AR glass From a distance AR glass modules have less glare, look darker and generally have a more appealing appearance. AR Glass Non-AR Glass AR Glass Non-AR Glass Care needs to be taken when handling AR glass! Gloves, care not to scratch, careful cleaning 16

16 AR Glass Efficiency and Yield Gains power (kwh/kwp) Total energy gain Module flash test data will see a gain at STC of ~2.5% Example: 303 watt module power with Non-AR glass will increase to watts with AR glass Once in field AR glass provides additional kwh/kwp benefits 17

17 Compatible Inverters SunPower modules require Positive earth connection Transformer inverter SMA SMC6000A positive earth kit Fronius Hard earth for IG Internal earth fuse for IG Plus Other transformer inverters not supported by SPAU Xantrex etc SB

18 TECHNOLOGY EFFICIENCY & ENERGY PRODUCTION

19 World Record Cell Efficiency SunPower s all-back contact solar cells achieve production efficiencies of 24.2% on average -- 50% more than conventional solar cells! SunPower Cell 24.2% Efficient Conventional Monocrystalline Cell 15% Efficient Conventional Multicrystalline Cell 14% Efficient 20

20 Highest Module Efficiency in the Industry FIGURE 2-21: BEST MODULE EFFICIENCY BY MANUFACTURER RANK COMPANY BEST MODULE EFFICIENCY May 2009 SURVIVING THE SHAKEOUT: WINNERS AND LOSERS IN CRYSTALLINE SILICON PV* * Note: Global ranking, SunPower 19.5% 2 Sanyo 17.7% 3 Trina Solar 16.0% 4 Kyocera 15.7% 5 Suntech Power 15.3% 6 Photowatt 15.0% 7 Solarwatt 14.7% 8 Solon 14.6% 9 Tynsolar 14.5% 10 CEEG Shanghai SST 14.5% 11 Solaria Energia 14.3% 12 Sharp 14.2% 13 REC 14.2% 14 Canadian Solar 14.2% 15 Conergy 14.1% 16 Titan Energy Systems 14.0% 17 Aleo Solar 14.0% 18 Tenesol 14.0% 19 Yingli 14.0% 20 Evergreen Solar 13.7% 22

21 Better in Cooler Climates kwh/kw (Annual Average June 06 to May 09) % +9% + 9% + 7% + 6% + 6% + 5% Mitsubishi Schott Solar BP Solar Sanyo First Solar SolarWorld Solon SunPower Technology: (a-si thin film) (poly-si) (mono-si) (HIT-Si) (CdTe thin film) (poly-si) (poly-si) (back contact mono-si) Energy output (kwh) from one kw of array (annual average. June 2006-May 2009) Values show SunPower advantage in energy output SunPower produces between 5% and 16% more energy. Source: University of Stuttgart 27

22 Better in Coastal Climates % +8% + 8% + 7% + 6% + 6% + 4% 4700 kwhs/kwp (June 2006 to May 2009) BP Solar Mitsubishi Solon First Solar SolarWorld Schott Solar Sanyo SunPower Technology: (mono-si) (a-si thin film) (poly-si) (CdTe thin film) (poly-si) (poly-si) (HIT-Si) (back contact mono-si) Energy output (kwh) from one kw of array (June 2006-May 2009) Values show SunPower advantage in energy output SunPower produces between 4% and 16% more energy. Source: University of Cyprus 28

23 Better in Hotter Climates - SunPower Likes it Hot Alice Springs, ambient temperature = 35 C SunPower System Conventional System 5 x 318W= 1.59kW -13.3% (loss of power at 35 C) Behaves like a 1.38kW system (Total loss of 210W) 9 x 185W= 1.67kW -17.4% (loss of power 35 C) Behaves like a 1.38kW system (Total loss of 285W)

24 Superior Temperature Performance Operating Temperatures July 3, Temperature difference Tem mperature (degr rees Celsius) In-plane Irradiance (W/m2) I ASU/PTL side-by-side test of SunPower 230 W and standard c-si modules. 30

25 Broad Spectral Response SunPower cells capture more light across the spectrum 31

26 Power vs. Energy Power is a Rate Changes each moment with intensity of sunlight Watts(W) or kilo-watts(kw = 1000 W) not watts per hour, just watts Measures the size of the solar array Energy is an Amount Accumulates over time Watt-hours (Wh) or kilo-watthours (kwh = 1000 Wh) Determines your electric bill each month, and how much your solar system reduces that bill 32

27 Industry-leading Quality, Reliability, and Warranty Industry-leading warranty 10 years workmanship guarantee Most competitors offer 1 to 5 year warranty Production warranty 12 year 90% 25 year 80% Environmentally sustainable manufacturing processes Quality Accredited Warranty Process 43

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