WELCOME TO SUNPOWER

Why Partner with SunPower?

Worldwide footprint

Over 85 patents and 25 years of R&D

Over a quarter century of experience

Over 500 systems on 4 continents

Over 1 GW of solar manufactured

World record cell efficiency of 24.2%

Ramping to 2GW annual production

capacity 2012

Over 1000 Partners and growing

rapidly worldwide

Publicly traded (NASDAQ)

5,500 Employees: all we do is solarProfitable and growing, with a strong

balance sheet

Established and Proven Technology Leader

balance sheet

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Solar Experts for Over 25 Years

We remain on the cutting edge of solar technology- world

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of solar technology- world record efficiency of 24.2%

Over 120 Patents Protect our Competitive Advantage

Leader in Multiple Applications

SunPower is Number 1:

Commercial Utility Project

Award winning Commercial installation in Australia

Largest Utility install in Australia; W.A Pilbara region

Best Largest

Residential

Residential Partner Network in Australia.

Largest

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Multiple Awards

Global Presence

New Jersey

Hawaii

California South Korea

Germany

Switzerland

Spain

Philippines

Italy

Singapore

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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

Singapore

AustraliaRegional HQ

Regional Office

CELL TECHNOLOGY

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

SunPower’s Cell Architecture

No shading gridlines equal larger exposed surface for light

capture.

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Wider and thicker electrical contacts

deliver more current and voltage. Backside “mirror”

reflects sunlight that has not yet been

absorbed back into the cell.

SunPower Cells SunPower Solar Cell24.2% efficiency

Lightly doped

front diffusionTexture & anti-reflective

coating (ARC)

N Type Silicon

Passivation

Layer

Lightly doped front diffusion: Increase

electricity capture within the cell

Texture & anti-reflective coating (ARC): Improved refraction of light into cell.

Passivation Layer:

Increase electricity capture within the cell

Backside contacts:Eliminate shadowing

Layer

Backside

ContactsLocalised

JunctionsMirror

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)

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Lightly doped front diffusion

Texture & anti-reflective coating (ARC)

N Type Silicon

Passivation Layer

Backside ContactsLocalised Junctions

Mirror

1. Maximum light capture- Up to 10% more sunlight on

front surface2. Reduced Resistive losses- Back contacts enable wider

and thicker, lower resistance contacts

3. Minimum Recombination Loss

- Passivating Silicon dioxide

How SunPower Cells Achieve Record Efficiencies

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Texture and ARCFront Contacts

N-Type Junction

P-Type Silicon

Aluminum PasteBack Contact

- 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.

Power loss from crystalline module degradation causes a big headache for the industry.

No Light-Induced Degradation (LID)

• Conventional p-type silicon

cells lose up to 3% of their 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 no loss of power due

to LID.

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More Light – More Energy

• 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

SunPower technology captures more light

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• 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

Captured light is converted into more energy

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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

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Current Cell

300 Series Panels

New Cell

E19 Series Panels

3.2% more

cell area

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

� Care needs to be taken when handling AR glass!

– Gloves, care not to scratch, careful cleaning

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AR Glass Non-AR

Glass

AR Glass – Efficiency and Yield Gains

Total

energy gainpower(kWh/kWp)

� 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 310.6 watts with AR glass

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� Once in field AR glass provides

additional kWh/kWp benefits

(kWh/kWp)

Compatible Inverters

SunPower modules require

� Positive earth connection

� Transformer inverter

– SMA

� positive earth kit

SMC6000A

� positive earth kit

– Fronius

� Hard earth for IG

� Internal earth fuse for IG Plus

– Other transformer inverters not supported by SPAU

� Xantrex etc

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SB3800

TECHNOLOGY EFFICIENCY & ENERGY PRODUCTION

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’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

Multicrystalline Cell

14% Efficient

Conventional

Monocrystalline Cell

15% Efficient

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Highest Module Efficiency in the Industry FIGURE 2-21: BEST MODULE EFFICIENCY BY

MANUFACTURER

RANK COMPANY BEST MODULE EFFICIENCY

1 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%

May 2009SURVIVING THE SHAKEOUT:

WINNERS AND LOSERS IN

CRYSTALLINE SILICON PV*

* Note: Global ranking, 2009

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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%

Better in Cooler Climates

2700

2800

2900

3000

3100

3200

3300

3400

kWh/kW

(Annual

Average June

‘06 to May

‘09)

+16% +9% + 9% + 7% + 6% + 6%+ 5%

� Energy output (kWh) from one kW of array (annual average. June 2006-May 2009)

� Values show SunPower advantage in energy output—SunPowerproduces between 5% and 16% more energy.

2500

2600

Mitsubishi Schott Solar BP Solar Sanyo First Solar SolarWorld Solon SunPower

(a-Si thin

film)

(CdTe

thin film)(poly-Si) (poly-Si)(poly-Si) (mono-Si) (HIT-Si)

(back contact

mono-Si)Technology:

Source: University of Stuttgart

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Better in Coastal Climates

4100

4300

4500

4700

4900 + 4%+ 6%+ 6%+ 7%+ 8%+8%+16%

kWhs/kWp(June 2006 to

May 2009)

� Energy output (kWh) from one kW of array (June 2006-May 2009)

� Values show SunPower advantage in energy output—SunPowerproduces between 4% and 16% more energy.

3700

3900

BP Solar Mitsubishi Solon First Solar SolarWorld Schott Solar Sanyo SunPower

(poly-Si)(poly-Si)(poly-Si)(mono-Si) (HIT-Si)(back contact

mono-Si)Technology:

(a-Si thin

film)

(CdTe

thin film)

Source: University of Cyprus

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Better in Hotter Climates - SunPower Likes it Hot

SunPower System Conventional System

Alice Springs, ambient temperature = 35°C

9 x 185W= 1.67kW

-17.4% (loss of power 35°C)

Behaves like a 1.38kW system

(Total loss of 285W)

5 x 318W= 1.59kW

-13.3% (loss of power at 35°C)

Behaves like a 1.38kW system

(Total loss of 210W)

Superior Temperature Performance

Operating Temperatures July

3, 2008

Tem

pe

ratu

re

(de

gre

es

Ce

lsiu

s)

80

70

60

50

40

In-p

lan

e Ir

rad

ian

ce

(W/m

2)

Temperature difference

ASU/PTL side-by-side test of SunPower 230 W and standard c-Si modules.ASU/PTL side-by-side test of SunPower 230 W and standard c-Si modules.

Tem

pe

ratu

re

(de

gre

es

Ce

lsiu

s)

30

20

10

0

In

30

Broad Spectral Response

� SunPower cells capture more light across the spectrum

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Power vs. Energy

Power is a Rate Energy is an Amount

� 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

� Accumulates over time

� Watt-hours (Wh) or kilo-Watt-

hours (kWh = 1000 Wh)

� Determines your electric bill each

month, and how much your solar

system reduces that bill

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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

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Quality Accredited Warranty Process