Sunday 25 July 2010

Maximize your roof space with Solar Power Panels

Every inch of that 9.9 kW home solar power system is used. Love it

Source: schottsolar.com
Panels: SCHOTT ASE 160
This is not in Melbourne, Australia.

Thursday 15 July 2010

SCHOTT solar vs SUNTECH solar panels test


Manufacturer SCHOTT solar Suntech Power
Solar panel model Schott Poly 220 Suntech STP190-18/Ub
Nature of the cells Polycrystalline Polycrystalline
Made in  EU (Cells in Germany) China
Product Warranty  5 years 5 years
Dimensions 169 x 99 cm 148 x 99 cm
Weight 23 kg 17 kg
Rated power 220 W 190 W
Power tolerance according to the manufacturer 0/+ +/- 3 %
Measured power / deviation to rated power 222.4 W / + 1.1% 184,1 W / -3,1%
Module Efficiency 13.3% 12,50%
Change of module efficiency at low light (100 W / m²)  - 7.2% -19,00%
Fill factor 73.3% 72,20%
Change in performance with heat (70 ° C)   - 19.7% -19,30%
Recognizable abnormalities and deficiencies (Electroluminescence and thermography) low low
Test result performance test  very good  insufficient
Further defects no yes
Test Results Further shortcomings very good good
Notes - 3)
Overall rating very good insufficient

Source: Translated from Oeko-test, April 2010


SCHOTT vs SUNTECH solar panels test



Solar panel efficiency? The higher the efficiency the better?

"according to the Alternative Technology Association (ATA), an energy efficiency rating doesn’t tell you how the panels will perform. “The most important figures to look at are how much energy the system will produce each year, versus the money spent,” the ATA says."(Source: Choice buyers guide)
 Efficiency doesn't tell you how much power the panel will produce. It will tell you, how much space you need.

Polycrystalline panels can have a higher energy output than Monocrystalline panels, even though the latter are more efficient. Sounds like a contradiction, but it's true.
In Europe, Polycrystalline panels are more popular than Monocrystalline.

Solar panel manufacturing

See this video about solar panel manufacturing of SCHOTT panels. Fully automated process. Check out the robot in 0:38. SCHOTT solar panels manufacturing