Our solar panels are from Fred480V on Ebay. I went with their 200 watt bifacial panels as they were the correct size for me to fit 5 of them on our roof. Although given how we had to install the panels I do not expect much from the bifacial aspect but I figured any small amount would make it worth it. Although I can not compare our bifacial panels vs regular panels side by side I can say our panels look to be very well made and we are happy with them. We are looking forward to a bunch of years of off grid boon docking power!