
** Special offer---if you can pick up or ship...10¢/watt.
* Delivered anywhere continental USA...12¢/watt.
570/580/590 watt Bifacial Grade B panels
SOLAR PANELS ARE ROCKS THAT MAKE ELECTRICITY. They never truly "wear out" – expect decades of solid production with minimal degradation. And Grade B panels perform near, on, or over spec. Manufacturing imperfections or slight spec variance cannot be sold as Grade A.

These are brand new Grade B panels – meaning they have minor cosmetic imperfections (chipped cell or tiny blemish). These are purely visual – they do NOT affect electrical performance or long-term output!
Upon seeing a panel, customers rarely can spot the chip or crack — I usually have to point it out. I’ve sold over 100,000 Grade B panels, and in all those years only 6 ever came back.They are good as gold!
MINIMUM ORDER 1 PALLET (33 panels).
Key Specs
- 570/580/590W output per panel
- Bifacial design – captures power from both sides for extra yield (up to 20-30% more in reflective environments)
- Panel size: approx. 89" x 44" (2260 x 1134 mm) Weight: ~72 lbs.
Manufacturers don't warranty Grade B panels, however, Sun Electronics International, Inc. will. 25 year warranty, up to 85%.
If you have any problems with these panels I will refund your money.
570W $68.40/panel, $2,257.20/pallet
580W $69.60/panel, $2,296.80/pallet
590W $70.80/panel, $2,336.40/pallet
John Kimball
The original Sun Electronics International.
Find me at sunelec.com.
Call me at (305) 498-1863 and (520) 738-1760.
Text me at (305) 498-1863 and (520) 738-1760.
24/7/365
If you ever have a problem please feel free to contact me directly. John Kimball, Owner (305) 498-1863 24/7/365
Your support and contributions will enable us to meet our goals and fund our mission.