Bifacial Solar Panels from Signature Solar 

These panels are out of stock. If you need new bifacial or mono panels, check out my site: www.mobile-solarpower.com/300w-solar-panels.html Price does not include shipping. Same goes with santan solar and other large solar panel distributors. Shipping charge applies for a pallet of panels. So fill it up. Buying one would make these far too expensive. Which is usually the case. ~~~~~~~~~~~~~~~~~~~~~~~~~ Does off-grid solar confuse you? Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com Join our DIY solar community! #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com Check out my best-selling, beginner-friendly 12V off-grid solar book (affiliate link): amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Solar. Low prices and great warranty, and they can take your entire house offgrid with their new Powerwalls: ts.la/william57509 ~~~~~~~~~~~~~~~~~~~~~~~~~ My solar equipment recommendations (Constantly updated! Check here first): 12V/48V Lithium Batteries: www.mobile-solarpower.com/solar-batteries.html Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Plug-N-Play Systems: www.mobile-solarpower.com/full-size-systems.html Complete 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html ~~~~~~~~~~~~~~~~~~~~~~~~~~ My Favorite Online Stores for DIY Solar and Coupon Codes: -Current Connected: SOK, Victron and High Quality Components. Best prices and warranty around: currentconnected.com/?ref=wp -Signature Solar: Cheap Server Rack Batteries and Large Solar Panels: www.signaturesolar.com/?ref=h-cvbzfahsek -Ecoflow Delta Official Site: My favorite plug-n-play solar generator: us.ecoflow.com/?aff=7 -AmpereTime: Cheapest 12V batteries around: amperetime.com/products/ampere-time-12v-100ah-lithium-lifepo4-battery?ref=h-cvbzfahsek -Rich Solar: Mega site and cheaper prices than renogy! Check them out: richsolar.com/?ref=h-cvbzfahsek -Shop Solar Kits: Huge site with every solar kit you can imagine! Check it out: shopsolarkits.com/?ref=will-p -Battery Hookup: Cheap cell deals bit.ly/2mIxSqt 10% off code: diysolar -Watts 24/7: Best deals on all-in-one solar power systems, with customer support and distribution here in the USA: watts247.com/?wpam_id=3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ Contact Information: I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: williamprowsediysolar@gmail.com Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar FTC Disclosure Statement and Disclaimers: Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

Just read a study from Germany about these panels (bifacial). They mounted them vertically facing east/west. They claim 2 peak power producing periods, one in the morning and one in the late afternoon/evening. This is compared with the traditional methods most people use to mount their panels, horizontally at an angle. Mounting them vertically east/west produced twice the amount of energy. I would love to see you produce a video about this. BTW, big fan. The product reviews and DIY are great.

"The battery is fully charged, gosh dang it." Words I have never spoken.

Canadian here. Would be interesting to see what they would do in snow conditions. On a sunny day with fresh snow, there is a ton of reflective light.

I live in Maine, I think these will be extremely beneficial with the reflection off the snow with the addition of cold cold weather. These panels could really rock and roll

Will: I installed 4 x 420W LG Bifacials at 70 degrees for winter snow load and sun angle mean for Ottawa Canada. The first winter was a surprise, reflection of the snow during a full snowstorm was enough 100-150W to recharge batteries, in turn the backside heated the panels to keep them snow free 95% of the time. Overall these LGs provide enough power winter and summer to run a house in Canada during the worse of snowstorms

Thank you Will Prowse for taking the time and expense of reviewing these products. I appreciate you shedding light on these items and sharing it with the public; very helpful and informative.

We sell only bifacials solar panels at Speed Solar and I loved all of your comments. Up north they shed snow faster and make power when monofacial panels are shut down in the winter!

We are off grid with 11.7 kw of pole mounted bifacial it is a game changer for winter and cloudy conditions, but all around more power when you need it. We have installed them on 100% of our ground mounted installs and some roof mount jobs for 2years now.

Ooh!!! Now I can’t wait for the mounting video so I can figure out how best to set them up on my aluminum roofed cargo trailer conversion!!!

I’ve had 18 bifacial panels on my roof for 6 months and they have given me more than I could ever expected. Hooked up to my 2 x 8.2 li-po batteries power my house perfectly and I’m going to get another 2 batteries when I can afford it

I was watching these panels for two weeks. Thanks for testing

Exciting to hear how well these perform--not a gimmick. Love that warranty.

These would absolutely shine when ground mounted, with a white wall, or even some open space, behind them. Nice!

I'm glad you liked the bifacial panels. That is what my solar installer has quoted me for my off-grid house being built this fall.

Good info Will. You confirmed what I've heard about bifacial panels which is that they have to be tilted significantly to achieve rated power and shouldn't be mounted flat. Looking forward to the mounting video. Cheers.

We need better distribution of these types of best quality panels for small consumers.

When you're 'juiced' about something, its infectious. And I, for one, enjoy it. Thanks

Please do a video where you find a 25 or 30 year old solar install and interview the owner.

Will, I tested a bunch of different Mono and Poly panels in the heat of Vegas and Phoenix. Every test shows that the mono-crystaline held up in the heat of summer far better. This is with the sun beating on them all day, you would really see the poly degrade when it got really hot in these climates. Also over time the output over the years would have the poly degrade faster. Cooler areas can run poly just fine. Found no brands are all that different than another, some names like the sunpower seem very high quality but oftentimes only make sense if you have limited space, I would tell folks just buy two of the 2nd best panel in most cases. As always thanks for putting your research out there for the public.

Now I know what I'm putting on my new home. Good find! You have all the best info on all things Solar. Your videos helped me build my first array on our Skoolie, and now designing for our new house when we build.

Signature Solar is really rocking the market with great products and pricing. Could not be happier with my Gyll 48 volt battery system. Certainly worth a look!

Wow! I'm stunned! I was about to buy 12 320 watt panels for our Idaho home...and we get snow every year! So this is a game changer!

I'm very curious to see how they would work mounted on a white van roof, if enough of us ask I'm sure Will can look into it for us! Maybe use that spare panel and compare it to some other single panels of the same size, on some kinda van roof analogue with similar mounting and spacing conditions to a roof mounted setup.

I am glad I purchased my 32 biface panels from Signature Solar just before your review. I am looking forward to getting them all mounted. Will be ground mounting them here in the Pacific Northwest.

Thanks Will. Just bought four of these panels to go on my own solar trailer build, and made sure to come here and use your affiliate link. The huge output for small footprint, and increased winter output, are precisely why I chose these, as Oregon isn't ideal for solar.

thank you for introducing me to this bifacial technology. I have used it to build a solar bicycle and they are amazingly power dense!

Great. I don't know whether here in Kenya we can find a guy who is so passionate about solar energy like you Kuddos sir .Learnt a lot

Thanks Will. Glad I passed on installing solar last summer. Thought there would be a game-changer coming along.

Hi Will, I think a good application of these would be in greenhouse/shade house to grow plants under. They did an experiment where crops where grown under solar panels in the desert. The solar panels shaded most of the harsh desert sun and reduced water evaporation while the transpiration of the leaves helped cool the solar panels increasing efficiency. I would like to use these on a attached porch/ pergola. It would allow for plenty of light to pass through to prevent the house from getting to dark and keep my porch plants alive. Adding a mist system for hot days would be cool neat too. You should try and experiment with plants under solar panels

For use on a boat it's just a wonderful idea. If you mount the solar panel on an arch you'll get the reflection from the water on the back plus the direct sunshine on the top of the panels.

Thanks Will, I 've been really curious about the Bi-Facial panels. Look forward to hearing more.

These panels are game changers. I like that it's smaller footprint with more output!

when you hoard to much power that you have to leech it out to test the new panel. LOVE IT!

This looks like it would be good in northern climates where the pannels are mounted 40-45* and there is a bunch of white snow around for 1/3 of the year.

Will, I just bought 5 panels from them after your recommendation and used your link. Hopefully you get the credit for it. Thanks for all the info and your review on these!

Interesting. I just purchased 12 of Seraphim 305W mono panels new in March. These 410W bifacial are almost $0.05/W cheaper and, while they are larger in size, they also produce a tiny bit more power (1W/ft2) for the space footprint. I factored in freight shipping cost of both as well. I'm very tempted to order a pallet of these as I'm working to move (and considering replacing) my 3rd array. I'm guessing there won't be much benefit to the bifacial part during summer for a ground mount array since grass doesn't reflect sun; however, in winter when there is snow on the ground, might increase production significantly.

Others have asked and I hope Will will try one on a van or cargo trailer. This is very valuable information to have. Thanks Will!

I did a 2.8 Mw roof mount with 360w bifacial frameless prism panels. They were sweet!

This kind of stuff is why i subbed to a while ago! Back when you were living in the tiny home 👍🏻

Thank you, Will, appreciate your sharing. It would be good for many of us to know how only 1 or 2 of these could be utilized for a smaller system. Many people are trying to survive in their vehicles, and also many are looking to be able to have a back-up in their homes if the power goes out...again, a smaller system. I still study and learn. I ordered your book! Thanks again.

Absolutely love your vids Will. Keep up the good work!

Imagine a car park that's for electric cars only and its powered by these cells. Lots of these cells. The money return would be quick and $$$$$$! I could be wrong. Great job Mr. Prowse and many thanks for all you do.

No one: Will: I have so much power I don’t even know what to do with it anymore

Seen them used for patios when they first came out 20+ years ago. Make a covered walkway. Saw solar panels covering the sidewalk to the street for a small twin home near Philly.

You and your videos are awesome. Please keep on testing and educating. Also my favourite part "The battery is fully charged. Gosh dang it. So lets give it a load so we can discharge a battery for a bit. I don't even know what to use this power anymore. I guess I will turn on the air conditioner".

I've had my Bifacials for over 2 years now, bought for all those reasons. And as a array on a truck for living it isnt about peak output for me; but about getting enough power in winter - in the UK where even summer can have weeks of cloud. I struggled with the mounting and being able to angle them yet still be wind safe (also have bad winds in the UK) . I think when I have it sorted I'll get the benefits, they are no worse than ordinary anyway.

I just saw a television show on these panels and other geometric solar configurations. The interesting discovery was that mounting the solar cells onto a sphere using mercator projection lines doubled the output of the same sized flat panel. These were unexpected results.

Please do a test on their Gyll LiFePO4 batteries. Thanks for all you do. I've learned an incredible amount from watching and listening to your content.

Love the testing. The fact that you have move power than what you can use make its even better. Need a way to shed the excess for a good cause.

I feel like these will do great in the snow in the winter and make up for much weaker sun days

I know somebody who actively cools his solar panels because its cheaper to run a pump and radiator than the eficiency loss due to overheating panels. Can you maybe check that? las vegas might be a great place to test that.

Looks fantastic. These are brilliant. I hate it when you have a full battery. I run my RV off just the excess most days - which is awesome :) But finally a panel that uses excess heat too ;)

YOU MY FRIEND. ARE ON POINT. THANKS FOR ALL THIS GREAT INFO YOU PROVIDE

Trying to get some panels, not sure what to get. I have been watching a few reviews and I think 1 impressed me the most. Definitely gonna try these bigacials.

Great info. I'm just starting an off grid cabin. Tx you Rob

exactly what ive been waiting for, thank you!

These would work fantastic on the roof of a van, especially because you could have as reflective of a roof as you want. It's be especially good on an airstream.

You're the best Wil! Thanks for all the awesome info

Best solar panel video I have seen to date.

Great work - suggest watch for ANY shading on the panels as it depends how they connect the two section - but generally it causes considerable power loss in the total system - due current limiting .. - great work - very surprising costs - thanks

It's only a matter of time before someone marries solar water heating with bi-facial panels (keeping the panels cool enough for peak efficiency with a wider degree of mounting flexibility). Weight would obviously be a factor but we're already only 20 pounds below a standard bundle of asphalt shingles now anyways! Perhaps engineering many micro tubes for water between the PV layers to wisk away the heat.

These panels are VERY exciting Will. Keep up the research on them please. bill in Florida

Bifacial cells are used in Northern Europe for agricultural PV - placed vertically on stands in South to North Direction on bigger agricultural farms - allows grassland or even animals inbetween. The max power is generated in the mornings and the afternoons twice a day, when the other south oriented PVs are not on max performance. Better for the overall grid load distribution. And still in this configuration the yearly earnings are at up to 110% relative to south directed non bifacial cells.

THANKS WILL ! TAKE CARE..

Yo man thank you for installing some new knowledge in my brain. ! Excellent video. 👍

Very interesting stuff. I would love to see you put together a full system (budget-minded) with these panels.

I wonder how much more you could get out of them if you figured out the proper mounting angle and placed them on a polished surface like aluminum or stainless? You know something polished to a mirror like finish under them. Making sure to have them to still be aligned properly for good top surface exposure but at enough of an angle to get some really good back lighting on them as well. I find these incredibly interesting and didn't even know they existed. I also wonder how they would hold up to applications like using them on an RV Roof? Thank you for all the cool tech you show us and your methodical testing so we know exactly what works, is a good value and what are the best deals without just going stupid cheap at the cost of pinching pennies to loose dollars...

i have 34 x 435w qcell bifacial G8. verry good panels , 2.5 times more power in cloudy days

So these are really suitable for ground mount applications, I think a south oriented solar carport with white concrete surface would be the optimal setup. I am looking at a solar patio canopy and I can see that in the winter, from a white painted floor I would get a lot of sun reflected onto the back of the panels.

Sounds good for a sailboot on the arch.. with the reflecting sun from the wather

Use the bifacial solar panels as a fence would be possible very useful in winter time.

Thank you so much for sharing your knowledge . appreciated ! I learned a lot today:)

I have been concidering these panels for a home I hope to build soon. My thought was to combine geothermal and these panels by laying 6-8" pipe 3'-4' underground. Here in Georgia the grond temp is about 65°. When I mount panels mount them on a box. An enclosure that has silver reflective insulation panels on the inside. Hook the pipe to the box then using a fan blow the 65° ground cooled air inside the box to cool the panels. This would mounting method could also be used to melt snow off panels.

I hope this means a road-trip to somewhere snowy next winter!

This sounds perfect for a boat too!

Now this is a solar panel that peaks my interest

Great video, I have a Chevy Volt that only charges up to 60 miles so I should be able to charge up fast between deliveries.

I was going to suggest putting mirrors behind them but I scanned the comments first and saw many others suggesting the same thing. Lots of replies about this causing overheating too. So my two questions are: 1. Is there a reflective surface that reflects less of the infrared and near-infrared portion of light while reflecting more of the ultraviolet and near-ultraviolet portion? and 2. How well would these panels perform with such higher wavelengths?

Looking forward to future updates. I’m guessing bifacial panels would rock on top of a white van.

It would be interesting to see the affect of tilting the panels arranged the way you had them. As some light is reflected off the front of a panel it can then be captured into the back of the one in front of it.

Just what i wanted to see. I wonder if putting a mirrored surface like foil or Mylar on the ground makes a big difference.

I am making a ground mount for 2 of them now , they should be 3' off the ground min. and I will use white lime stone on the ground behind them for reflection.

I have Sunpower 435 watt open circuit voltage of 85.6 on my motorhome best panels I've ever seen. These are B panels. I have 4 brand new panels in my Boulder City storage. My highs are usually about 800 watts for two. But have gotten 872 on 3 cloudy days with the B panels where the sun was low and the clouds were above. My panels in storage are A panels. Would like to see how they compare to the B panels one day. If you care to do a test without having to pay for panels, I'll be around in early Oct. Great channel by the way....

We appreciate your effort and share your valuable experiences with us, it would be great if pounds were translated into kilograms or Fahrenheit to Celsius temperature, etc.

LOL, I guess it would pay to bring back the house of mirrors concept, eh? Great video!

These coupled with a roof painted with the ultra white BaCO3 paint that reflects >98% light would be amazing.

A few years ago I'd heard that the next generation of solar panels was nearby. I understood that they were supposed to be of a curved cell nature. But are these those? I have just the roof for them! Thank you for this, I'm excited!

Very impressive and they would probably be even better on a reflective roof.

Very Great!,Thanks For All The Info ,& Research!

Excellent information ! Really neat deal !

These would be good for a shade structure roof or carport where there is a good distance to the ground.

good job WIll!!

Running new Jinko 400W panels that just where turned on last year, they do exceed their max rating. I generally thing the commercial sized panels seem to perform much better than residential.

It would be cool if the model y and model 3 had a solar panel option like this, maybe the light coming in the cabin and being reflected of the white seat might makes them more efficient and in the winter time it would heat up the cabin too, summer time might be a problem. But it would be a cool design to have a partial glass roof with solar, like the panel be spread out so you can still see outside but also produce electricity

"I don't even know what to do with this power..." Everyone needs to do this!

Would be good for ski resorts, since the sun reflects well off snow.

They are using bifacial panels on large sailboats, they're game changers.

WOW thank you !!!

These would be good for areas that get snow and limited sunlight hours.