® An Energy Conversion Devices Company Energy Producon In the solar business today, system purchases are made on a dollar-per-watt or Euro- per-watt basis. But, the return on investment (ROI) or payback period is determined by the amount of electricity, in kWh, the system produces. Third party testing, in real world conditions, shows that UNI-SOLAR produces more energy for your purchased watt, and, therefore, provides the best return on investment. This third party testing, conducted over a number of years, shows the long-term reliability and performance of the UNI-SOLAR product. This type of proof is something no other flex- ible photovoltaic manufacturer can provide. Each UNI-SOLAR laminate utilizes unique triple-junction amor- phous silicon solar cells, where the blue, green and red light of the sun is absorbed in different layers of the cell. This technol- ogy results in better performance in low and diffuse light condi- tions. By-pass diodes are connected across each cell, allowing the modules to produce power even when partially shaded or soiled. Figure 1. Triple-Junction Technology Figure 2. Light absorption effect of triple-junction technology UNI-SOLAR ® produces more energy in real-world conditions + _ UNI-SOLAR PV MODULE CELL CONNECTIONS Shade/Soil any one cell = Output loss of <4.5% (22-cell Laminate) Area of shade/soiling required to cover one cell = 9” x 14” (126 sq in) BYPASS DIODES ACROSS EACH CELL wavelength in nm relative intensity triple cell overall blue-absorbing cell green-absorbing cell red-absorbing cell 1.0 0.8 0.6 0.4 0.2 0 300 400 500 600 700 800 900 ® An Energy Conversion Devices Company Energy Producon
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®
An Energy Conversion Devices CompanyEnergy Production
In the solar business today, system purchases are made on a dollar-per-watt or Euro-per-watt basis. But, the return on investment (ROI) or payback period is determined by the amount of electricity, in kWh, the system produces. Third party testing, in real world conditions, shows that UNI-SOLAR produces more energy for your purchased watt, and, therefore, provides the best return on investment.
This third party testing, conducted over a number of years, shows the long-term reliability and performance of the UNI-SOLAR product. This type of proof is something no other flex-ible photovoltaic manufacturer can provide.
Each UNI-SOLAR laminate utilizes unique triple-junction amor-phous silicon solar cells, where the blue, green and red light of the sun is absorbed in different layers of the cell. This technol-ogy results in better performance in low and diffuse light condi-tions.
By-pass diodes are connected across each cell, allowing the modules to produce power even when partially shaded or soiled.
Figure 1. Triple-Junction Technology
Figure 2. Light absorption effect of triple-junction technology
UNI-SOLAR® produces more energy in real-world conditions
_ +
SILICON CRYSTAL PV MODULE CELL CONNECTIONS
+_
UNI-SOLAR PV MODULE CELL CONNECTIONS
Shade/Soil any one cell = Output loss of <4.5% (22-cell Laminate)Area of shade/soiling required to cover one cell = 9” x 14” (126 sq in)
Shade/Soil any one cell = Output loss of 30% (loss of one cell string)Area of shade/soiling required to cover one cell = 4” x 4” (16 sq in)
BYPASS DIODES ACROSS EACH CELL
Sources of soiling:• Bird droppings• Water puddling• Concentrations of dust/dirt
wavelength in nm
rela
tive
inte
nsity
triple cell overall
blue-absorbingcell
green-absorbingcell
red-absorbingcell
1.0
0.8
0.6
0.4
0.2
0300 400 500 600 700 800 900
®
An Energy Conversion Devices CompanyEnergy Production
®
An Energy Conversion Devices CompanyEnergy Production
Maintains energy production at high temperatures
Source: ISE Freiburg, Germany
Source: University of Urbino, Urbino, Italy
Yield in function of module temperature,Urbino, Central Italy (2003-2004)
UNI-SOLAR® laminates provide better energy yield at high temperatures. Today, all solar products are rated based on standard test conditions. In real outdoor conditions, cell temperatures increase with increased solar irradiation, reaching levels much high-er than standard test conditions. Crystalline silicon modules experience a significant decline in kWh output at high temperature, while UNI-SOLAR laminates do not. As a result, UNI-SOLAR laminates produce more energy when you need it most.
Measured Temperature Influence - Germany
®
An Energy Conversion Devices CompanyEnergy Production
USO Surplus versus:Avg. mono-Si: +11%Avg. poly-Si: +18% CIS/CIGS: +24%Avg. a-Si: +41%
Average yearly yield (in kWh/kWp) 2004-2007
1243
1419
1491
1588
1757
0 500 1000 1500 2000
a-Si DJ
CIS/CIGS
poly-Si
mono-Si
a-Si TJ (USO)®
Average Annual Yield (2004-2007)
a-Si TJ
avg. mono-Si
avg. poly-Si
CIS/CIGS
avg. a-SI DJ
Site: Tucson, Arizona, USA Source: Tucson Electric Power, Arizona, USA
USO Surplus versus:Avg. poly-Si: +10%mono-Si: +29%
Average annual yield in kWh/kWp (2005-2007)
1011
1132
1247
1306
0 200 400 600 800 1000 1200 1400
mono-Si
poly-Si
poly-Si
a-Si TJ
Average Annual Yield (2005-2007)
In many locations worldwide, independent third party businesses and institutions collect data on several different photovoltaic systems. This real world data demonstrates the superior energy production of UNI-SOLAR laminates in high temperatures, low light levels, and shading. Below are three examples of this data from locations in Tucson, Arizona, USA; Frankenberg, Bolzano, Northern Italy; and Santa Cruz, California, USA. In each location, UNI-SOLAR outperforms competitive products by producing more kilowatt-hours of energy per kilowatt installed.
UNI-SOLAR® Performance Advantage (Third Party Testing)
Site: Frankenberg, Bolzano, Northern ItalySource: Office for Energy Saving, Province of Bolzano, Italy
®
An Energy Conversion Devices CompanyEnergy Production
UNI-SOLAR PANEL ARRAY (30°)CRYSTALLINE PANEL ARRAY (30°)
500
450
400
350
300
250
200
150
100
50
0
Kilo
wat
t Hou
r
Date
Jan
04
Mar
04
May
04
Jul
04
Sep
04
Nov
04
Jan
05
Mar
05
May
05
Jul 0
5
Sep
05
Nov
05
Jan
06
Mar
06
May
06
Jul 0
6
Sep
06
Nov
06
Jan
07
Mar
07
Santa Cruz Test SiteEnergy Production Performance Summary
UNI-SOLAR® Performance Advantage (Third Party Testing)
Map Data Produced by the Electric & HydrogenTechnologies & Systems Center
Cumulative Power ProductionNovember 2003 - March 2007USO Surplus versus Crystalline: +31%
UNI-SOLAR30° tilt
Crystalline30° tiltCrystalline 30° Tilt
UNI-SOLAR 30° Tilt 13.7 MWh
10.4 MWh
0 200 400 600 800 1000 1200 1400 1600 1800
KYOCERA KC120 30° tilt
UNI-SOLAR 3° tilt
UNI- SOLAR 30° tilt
average annual yield (in kWh/kWp)
UNI-SOLAR 30° tilt
UNI-SOLAR 3° tilt
Crystalline 30° tilt
Site: Santa Cruz, California, USA Source: Solarquest Report
2004 - 2006 Average Annual Yield
USO 30° Tilt Surplus versus:USO 3° Tilt: +28%Crystalline 30° Tilt: 31%
1654
1294
1268
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