Sienna Solar > Products > 24v Solar Panels > Renogy Bifacial 2pcs 320 Watt Solar Panels 12/24 Volt Monocrystalline PV Power Charger On/Off-Grid 640W Supplies for Rooftop Charging Station Farm…
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Renogy Bifacial 2pcs 320 Watt Solar Panels 12/24 Volt Monocrystalline PV Power Charger On/Off-Grid 640W Supplies for Rooftop Charging Station Farm…
【Bifacial energy yield up to 30%】 With the ability to capture sunlight from both sides, this panel can provide up to 30% more energy compared to traditional solar panels.
【Up to 30% Residential Clean Energy Credit】 You might be eligible for this tax credit if you own a solar PV system that was installed in the US between January 1, 2017, and December 31, 2034.
【More energy even in partially shaded】 With its innovative design that incorporates PERC, half-cut cell, bypass diodes, and 10 busbar technologies, this panel can maximize energy output even when partially shaded and protect the solar cells from overheating.
【Enhanced 25-year performance warranty】 Our solar panel is a reliable and long-lasting investment for your energy needs.
【More energy even in partially shaded】 With its innovative design that incorporates PERC, half-cut cell, bypass diodes, and 10 busbar technologies, this panel can maximize energy output even when partially shaded and protect the solar cells from overheating.
Additional information
Brand
Renogy
Maximum Power
320 Watts
Product Dimensions
38"L x 1.4"W x 69.7"H
Item Weight
86 pounds
Efficiency
High Efficiency
Connector Type
Male & Female
Included Components
case
Maximum Voltage
24 Volts
Material
Glass
Manufacturer
Renogy
UPC
840315225398
Country of Origin
Thailand
Item model number
Bifacial 2pcs 320 Watt Solar Panels
Size
Bifacial 320W
color
Black
Style
2PCS
Item Package Quantity
1
Batteries Required
No
8 reviews for Renogy Bifacial 2pcs 320 Watt Solar Panels 12/24 Volt Monocrystalline PV Power Charger On/Off-Grid 640W Supplies for Rooftop Charging Station Farm…
Rated 1 out of 5
FLA-Al –
Very expensive panel for no reason
Rated 5 out of 5
Troy –
I have been using the panels now for about six weeks. They are producing good output especially after I tilted them to point at the optimal angle for the late fall. The packing was excellent, which I expected for a relatively expensive and fragile product. I wish any of the Renogy kits to tilt the units worked for large (>200 watt) panels but I was able to build my own.
Rated 5 out of 5
Brian –
Since upgrading my system we have had no worries about having enough power for our everyday needs. Powers a full fridge as well as our water pump and cell booster and lighting (our everyday needs)….and our microwave, vacuum, and all the extras with reason to doubt the power these guys bring DAILY 😉
Rated 4 out of 5
SilverHand –
The 2 Renogy Bifacial 550 Watt Solar Panels arrived safely and were installed. However, the glass surface of the front of the panels was abraded? discolored maybe by contact with the cardboard packing. There was no soft packing in between so when shipped, the moving and jiggling may have caused this. I tried cleaning the surface but nothing works. Hope it doesn’t cut down on the efficiency.
Rated 5 out of 5
gabriel velasquez –
Hit a peak of 703 watts very impressed so far…2×320w bifacial
Rated 5 out of 5
FLA-Al –
Ordered two set of Renogy 450w bifacial panels during black Friday sale. Amazon had to special delivery. When received both both showed some signs of shipping. One set was perfectly fine, the other set had a shattered panel and a scuffed panel. Contacted Amazon and after a little back and forth with them try to figure out how to handle the replacement, Amazon Customer Service decide to refund me for one set, told me to keep the panels and discard the shattered one. The price of a pair of panels is now around $300 more. The panel are well packaged. I know they are large and heavy, but extra effort should be made to take extra care in handling…… Amazon Customer Service, did a great job resolving the problem, but would have preferred having 4 good panels.
I have only been able to run some quick tests on them and they all show great output. Will install the three good ones for now and decide whether to get more later.
Rated 2 out of 5
Shawn –
The poor rating is specifically regarding Renogy’s customer service. We are overall happy with their products.
We have 7 panels and all but 1 have been working flawlessly and perform as advertised. The construction is solid and they keep the entire boat running on solar 100%.
Our issue is one panel suddenly started producing less voltage a few months after installation. Instead of the typical 38 volts being produced by the other identical panels, it would only create 25v. We tried all ways to troubleshoot and verify the over panel was the issue. Based on panel size and specs, my best guess without digging the potting material out of the junction box is a bad bypass diode.
We provided all the data and how/when/how the measurements were made to Renogy and asked for additional help. The response from their level 1 tech support was to follow their online troubleshooting video and to video tape myself making the measurements. First, I would only be providing the same measurements but with a video that I actually did it and did not fake the data. Second, they were asking me to use a typical multimeter to measure a short circuit current which for this panel could be as high as 13-14A. The majority of meters on the market and owned by most will only measure up to 10ADC. I followed up with them telling them I already provided the voltage data and I could rig up a shunt or find another higher range meter to attempt a short circuit current (despite showing them the data of what it was during full sun and heavy load charging batteries). They responded that level 2 tech support agreed with me and were ok with a cell phone picture of voltage on my meter. Despite it being the exact same voltage I originally gave them, I again measured the open circuit voltage at 25VDC and submitted the pictures. Level 2 tech support agreed the panel was defective and said they would replace it. This was beginning of July.
Level 1 tech support asked us to ship back the bad panel and they would send us a new one. I was told they would send a replacement first and then I could ship back to other panel. They asked for a convenient day 5 days from them to receive new panel and ship back bad panel. I gave them a date and booked a slip at a marina.
The panel never shipped. It is now nearing the end of July and they are unable to tell me when a replacement panel is shipping. They won’t tell me if there is an issue, if they have no more panels, etc. I have contacted them at least 6 times since then and all I receive back is “we told logistics to send you two new panels. I have asked them to provide contact info so I can call and speak to someone..I have given them my phone number and asked them to call me.
We have been sitting in Palm Beach area for almost a month now waiting for a replacement panel. We should be at our destination in the Bahamas by now, but are stuck waiting. We explained multiple times we are travelling and can’t sit at a marina at $150 a day waiting and hoping it will ship.
I’ve sent emails to various departments I can find at Renogy with no response. We are considering just moving on and accepting that we have a defective panel (as recognized by Renogy) and just deal with low output from that panel. At some point, I will dig into the junction box and remove the weatherproof potting material and figure out which diode to replace (<$5). My panel will no longer be in warranty, but then again what good is the warranty if I can't get the defective panel replaced as promised.
If you want a decent panel for a good price, Renogy is it. I’ve purchased 8 panels and a charger from them and only 1 bad 😔 one has surfaced. If you want good responsive customer service, look elsewhere. I expect sketchy service from overseas companies, but not one that is US based in California.
Rated 5 out of 5
Brian –
I’m getting 520w max so far with two 320w bifacial panels. I got em propped up on saw horses. 80%+ is good enough for me!
FLA-Al –
Very expensive panel for no reason
Troy –
I have been using the panels now for about six weeks. They are producing good output especially after I tilted them to point at the optimal angle for the late fall. The packing was excellent, which I expected for a relatively expensive and fragile product. I wish any of the Renogy kits to tilt the units worked for large (>200 watt) panels but I was able to build my own.
Brian –
Since upgrading my system we have had no worries about having enough power for our everyday needs.
Powers a full fridge as well as our water pump and cell booster and lighting (our everyday needs)….and our microwave, vacuum, and all the extras with reason to doubt the power these guys bring DAILY 😉
SilverHand –
The 2 Renogy Bifacial 550 Watt Solar Panels arrived safely and were installed. However, the glass surface of the front of the panels was abraded? discolored maybe by contact with the cardboard packing. There was no soft packing in between so when shipped, the moving and jiggling may have caused this. I tried cleaning the surface but nothing works. Hope it doesn’t cut down on the efficiency.
gabriel velasquez –
Hit a peak of 703 watts very impressed so far…2×320w bifacial
FLA-Al –
Ordered two set of Renogy 450w bifacial panels during black Friday sale. Amazon had to special delivery. When received both both showed some signs of shipping. One set was perfectly fine, the other set had a shattered panel and a scuffed panel. Contacted Amazon and after a little back and forth with them try to figure out how to handle the replacement, Amazon Customer Service decide to refund me for one set, told me to keep the panels and discard the shattered one. The price of a pair of panels is now around $300 more. The panel are well packaged. I know they are large and heavy, but extra effort should be made to take extra care in handling…… Amazon Customer Service, did a great job resolving the problem, but would have preferred having 4 good panels.
I have only been able to run some quick tests on them and they all show great output. Will install the three good ones for now and decide whether to get more later.
Shawn –
The poor rating is specifically regarding Renogy’s customer service. We are overall happy with their products.
We have 7 panels and all but 1 have been working flawlessly and perform as advertised. The construction is solid and they keep the entire boat running on solar 100%.
Our issue is one panel suddenly started producing less voltage a few months after installation. Instead of the typical 38 volts being produced by the other identical panels, it would only create 25v. We tried all ways to troubleshoot and verify the over panel was the issue. Based on panel size and specs, my best guess without digging the potting material out of the junction box is a bad bypass diode.
We provided all the data and how/when/how the measurements were made to Renogy and asked for additional help. The response from their level 1 tech support was to follow their online troubleshooting video and to video tape myself making the measurements. First, I would only be providing the same measurements but with a video that I actually did it and did not fake the data. Second, they were asking me to use a typical multimeter to measure a short circuit current which for this panel could be as high as 13-14A. The majority of meters on the market and owned by most will only measure up to 10ADC. I followed up with them telling them I already provided the voltage data and I could rig up a shunt or find another higher range meter to attempt a short circuit current (despite showing them the data of what it was during full sun and heavy load charging batteries). They responded that level 2 tech support agreed with me and were ok with a cell phone picture of voltage on my meter. Despite it being the exact same voltage I originally gave them, I again measured the open circuit voltage at 25VDC and submitted the pictures. Level 2 tech support agreed the panel was defective and said they would replace it. This was beginning of July.
Level 1 tech support asked us to ship back the bad panel and they would send us a new one. I was told they would send a replacement first and then I could ship back to other panel. They asked for a convenient day 5 days from them to receive new panel and ship back bad panel. I gave them a date and booked a slip at a marina.
The panel never shipped. It is now nearing the end of July and they are unable to tell me when a replacement panel is shipping. They won’t tell me if there is an issue, if they have no more panels, etc. I have contacted them at least 6 times since then and all I receive back is “we told logistics to send you two new panels. I have asked them to provide contact info so I can call and speak to someone..I have given them my phone number and asked them to call me.
We have been sitting in Palm Beach area for almost a month now waiting for a replacement panel. We should be at our destination in the Bahamas by now, but are stuck waiting. We explained multiple times we are travelling and can’t sit at a marina at $150 a day waiting and hoping it will ship.
I’ve sent emails to various departments I can find at Renogy with no response. We are considering just moving on and accepting that we have a defective panel (as recognized by Renogy) and just deal with low output from that panel. At some point, I will dig into the junction box and remove the weatherproof potting material and figure out which diode to replace (<$5). My panel will no longer be in warranty, but then again what good is the warranty if I can't get the defective panel replaced as promised.
If you want a decent panel for a good price, Renogy is it. I’ve purchased 8 panels and a charger from them and only 1 bad 😔 one has surfaced. If you want good responsive customer service, look elsewhere. I expect sketchy service from overseas companies, but not one that is US based in California.
Brian –
I’m getting 520w max so far with two 320w bifacial panels. I got em propped up on saw horses. 80%+ is good enough for me!