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I am considering installing my first solar panels in an area where partial shading is possible during the day due to trees and other structures.
I read that bypass diodes try to address issues like hot spot in panels and performance degradation due to shading. This small setup will have clear view toward south-south west but during the day some shade will occur.
These are my findings for large ~230W-250W modules with size 65x40 that I envision for my system.
As of know the renogy and american solar wolesale look good to me in term of Watt/$/Number of Diodes.
If you know of solar modules of that suze with more than 6 diodes please let me know.
Renogy:
RNG-230/235/240/245/250P and RNG-240/245/250/255/260D
6 bypass diodes
American Solar Wholesale
American Solar Polycrystalline 230-240
6 bypass diodes
Canadian solar
CS5P-M and CS5P-P
4 bypass diodes
96 solar cells (instead of the 60 cells found generally elsewhere for a 65x40 dimension)
Upsolar
UP-M220P-B UP-M225P-B UP-M230P-B UP-M235P-B UP-M240P-B
3 bypass diodes
Helios
6T series
3 bypass diodes
Solar Power Industries
SPI 210-240
3 bypass diodes
BYD
220-260 P6-30
Bypass-Diodes 6 pcs. (IEC) / 3 pcs. (UL)
Sharp
(60 and 72 cells modules)
3 bypass diodes
Kyocera
Module Type KD135GX-LFBS KD140GX-LFBS KD215GX-LFBS KD220GX-LFBS KD235GX-LFB KD240GX-LFB KD245GX-LFB
2 bypass diodes
++++++++++++++++
By the way at this point (i can change my mind) what I think I have to design is a system that will us use 2x250W panels. I could add other 4 eventually but would be with stronger shading condition. I am thinking of an off grid solution where the CC and batteris are alsmost 100 feet from the solar modules, or a grid tie where the utility junction is much cleser. This is a DIY project as much as I can. The voltage of 250W panels is about 30.0Volt and I prefer not to connect them in series to avoid voltage drop due to shading.
I read that bypass diodes try to address issues like hot spot in panels and performance degradation due to shading. This small setup will have clear view toward south-south west but during the day some shade will occur.
These are my findings for large ~230W-250W modules with size 65x40 that I envision for my system.
As of know the renogy and american solar wolesale look good to me in term of Watt/$/Number of Diodes.
If you know of solar modules of that suze with more than 6 diodes please let me know.
Renogy:
RNG-230/235/240/245/250P and RNG-240/245/250/255/260D
6 bypass diodes
American Solar Wholesale
American Solar Polycrystalline 230-240
6 bypass diodes
Canadian solar
CS5P-M and CS5P-P
4 bypass diodes
96 solar cells (instead of the 60 cells found generally elsewhere for a 65x40 dimension)
Upsolar
UP-M220P-B UP-M225P-B UP-M230P-B UP-M235P-B UP-M240P-B
3 bypass diodes
Helios
6T series
3 bypass diodes
Solar Power Industries
SPI 210-240
3 bypass diodes
BYD
220-260 P6-30
Bypass-Diodes 6 pcs. (IEC) / 3 pcs. (UL)
Sharp
(60 and 72 cells modules)
3 bypass diodes
Kyocera
Module Type KD135GX-LFBS KD140GX-LFBS KD215GX-LFBS KD220GX-LFBS KD235GX-LFB KD240GX-LFB KD245GX-LFB
2 bypass diodes
++++++++++++++++
By the way at this point (i can change my mind) what I think I have to design is a system that will us use 2x250W panels. I could add other 4 eventually but would be with stronger shading condition. I am thinking of an off grid solution where the CC and batteris are alsmost 100 feet from the solar modules, or a grid tie where the utility junction is much cleser. This is a DIY project as much as I can. The voltage of 250W panels is about 30.0Volt and I prefer not to connect them in series to avoid voltage drop due to shading.