welcome to sunpower - · pdf file– other transformer inverters not supported by spau...
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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.
10
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
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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