This panel can put out close to 100 watts ruclips.net/user/postUgkxOqI2yqX0XVrhR2BMJciTWrHJpG8FhJyg when positioned in the appropriate southernly direction, tilted to the optimal angle for your latitude/date, and connected to a higher capacity device than a 500. The built in kickstand angle is a fixed at 50 degrees. Up to 20% more power can be output by selecting the actual date and latitude optimal angle.The 500 will only input 3.5A maximum at 18 volts for 63 watts. Some of the excess power from the panel can be fed into a USB battery bank, charged directly from the panel while also charging a 500. This will allow you to harvest as much as 63 + 15 = 78 watts.If this panel is used to charge a larger device, such as the power station, then its full output potential can be realized.
This is what the internet is for - for me anyway. I can learn things at my leisure, hardly a book required, taught by people who know what they're talking about for free. Before the "net, I'd have to attend a special class somewhere at some cost, materials required. Thi was well worth watching as have been many others. Thanks!
Thank you for everything, Amy. I never got to speak to you as I came to the game rather late but I can totally imagine that you are missed by everyone. RIP.
Your video is brilliant, you are the first person I've heard that has quickly, clearly and concisely described the difference between mono and poly panels, well done and thanks. Just need to convince everybody now to start getting them on their roof tops.
Nice comparison of mono vs. poly panels. Both work great so long as you buy Tier 1. If you are space constrained you will want to go with mono because you can achieve greater energy density. But for most homes and businesses, poly will work just fine. Let's grow solar!
Tier 1 solar panels are built with higher standards (to last longer and produce abundant solar power) and have a highly regarded reputation within the solar industry for quality and service
Thank you for this very nice explanation! There is a mistake made however at 4:00 to 4:40. The short-circuit current actually increases with temperature, hence the positive temperature coefficient. The open-circuit voltage decreases (much faster) and the overall power output also decreases; both have negative temperature coefficients.
To those interested:...…...I had a mismatched, 4,400 watt array that was Cooled by a single (Isolated) 12v panel hooked directly to a computer fan, drawing cool air from corrugated tube, just underneath the ground. Not needed when sun was at low angle, so no battery needed. It helped to produce more power during hot days, instead of common overheating losses.
Lets see, SHE deliberately left out the TRUTH. Poly produces MORE KWH per day that Mono. Why? Because Mono has to be pointed directed at the sun and or put on a tracker to get full output. Poly can be off up to 10 degrees to get the same power. Obviously they are over stocked in Mono so its the best thing since sliced bread now.
I see little evidence that Angle of Incidence has a meaningfully divergent effect on mono vs. poly. If you have a citation for the claim I'd be happy to read it and revise my position if needed. Digression: folks who strive for Critical Thinker status (as you indicate in your profile) generally avoid emotional language and groundless accusation, and try not to project motivations onto others.
What you do not take into account is Livespan. Multicrystalline Panels (poly is the wrong word, since polycristalline silicon is the refined silicon, say the rawmaterial) will degenerate much faster. So in the long run mono is always better.
I have a 100 Watt Monocrystalline solar panel mounted on my RV roof. up here in the Rain Shadow on Vancouver Island, we get many cloudy, rainy days (even in the summer). I am quite surprised at the power generation I am getting on overcast days.
It was my understanding that amorphous panels are less susceptible to partial shading issues, but they are less efficient (lower wattage per square meter). Are you talking about low-light conditions? Have any data to back up your claim?
That doesn't corrolate with the figures she gave e.g. 260W Polycrystalline vs 270W Monocrystalline> I calculate a 3.7% difference in output power!! Go figure!
I would stand by with what the lady said. It may be just the stupid talking out of me, same concept but other way around. Your car/truck battery, if its say minus 15 degree Fahrenheit and not been started for few days, your vehicle battery only had 2 different cranking amp categories. One is CCA for temperature is 32 degrees fahrenheit or lower and another section is CA which is temp is above 32 degree Fahrenheit. Can you guys take a guess what's the result would be those 2 sections in different temperatures? Cold temperatures will drop your voltage from 12 to 6 volt depending upon the condition of the batteries. But your amperage will go up. Chances are it's not gonna get it's full cranking amp on time because batteries just died on you. Above 32 degrees voltage will drop around 9 to 10 and still get almost full cranking amperage. My point is that there is some things that certain things will kill certain things effectiveness. I may be wrong, the hotter it comes, the more resistance it will form causing the best effectiveness to drop a bit. But hey 2% that's not much at all. Heck can fix that problem real fast, if it's a concerned, add another backup supply battery lol
@@matthewdavis7780 they are measuring efficiency differently. While the overall efficiency is 2% greater, it outputs 12% more power. One is comparing the output to the ideal efficiency (100%), the other is comparing the panels to each other. Think about it this way: If I have a 5 gal can for gas, but it only has a gallon in it, it's 20% full. If I add and another quart, it's 25% full. The way she's measuring it, that's a 5% increase, but I actually have 25% more gas in the can.
I understand where you get the 2% difference, but my math says that the 17.5% mono panel is actually 12.9 % more efficient than the 15.5% panels. 2÷15.5= .129 ( or 17.5 ÷ 15.5 = 1.129) expressed as a percentage as a 12.9% increase. Love your videos, looking in to getting some solar for our RV. Thanks!
I have mono panels and when I got them I tested them in the winter and they outperformed the giving data 2 years later they still outperform the giving data in the winter. Is there any difference in longevity of life between mono and poly panels.
Sorry for the delay in response. That's a really good question. I reached out to solar panel manufacturers who make both types, and was told that there is no difference in the technology that would cause one or the other to degrade faster than the other. The National Renewables Energy Lab (NREL) has published papers on the different degradation rates of module technologies; the primary contributor to degradation between mono and poly is quality of manufacturing and material selection, not the cell technology itself. So it's really more about how they are made, not which technology.
I've read that Poly perform better on hot climates compare to mono crystalline, despite of its heat tolerance, this is due to cell color. The pure black color of mono causes the panel to absorb more heat. I believe this is true, this is why poly is recommended in our country (Philippines). May I have your opinion about it?
That certainly could be, especially if the panel has a black frame and black backing sheet. But once again, the differences really are not huge, so whatever panel works for you is a good choice.
You are mistaken at 3.57,the current increases while the temperature rises. It is the voltage that drops significantly and hence overall power. Refer the - sign in front of temperature coefficients. Good presentation though:)
But I have seen in other videos and websites that claim Polycrystalline solar panels have lower temperature coefficient than Monocrystalline solar panel. Hence Polycrystalline solar panels performs better than Monocrystalline solar panel at high temperatures. Myself from India and I got two 100W polycrystalline solar panels for installation in my home to reduce electricity bills.
+Dinesh S Different manufacturers have different results, so Brand A's poly may have a better temperature coefficient than Brand B's mono. But when comparing the same brand's panels between mono and poly, I found that mono had either a better than or equal to temperature coefficient than poly. But again, the difference, if any, was so slight, that it really did not make much difference at all. Just one example: SolarWorld Mono: Pmpp -0.41 %/K Voc -0.30 %/K TC Isc 0.04 %/K TC NOCT 46 °C TC SolarWorld poly: Pmpp -0.41 %/°C Voc -0.31 %/°C TC Isc 0.051 %/°C TC NOCT 46 °C TC However, Canadian Solar showed no difference between their two types, but SolarWorld's poly has better Isc temperature coefficient than Canadian Solar's mono. Canadian Solar mono & poly: Temperature Coefficient (Pmax) -0.41% / °C Temperature Coefficient (Voc) -0.31% / °C Temperature Coefficient (Isc) 0.053% / °C Nominal Operating Cell Temperature 45±2°C Moral of the story, both technologies are great, use whichever solar panel fits your space and budget.
I'm sorry to ask but what did happen? I was just searching information and I assume the speaking lady in this video passed away? That's sad to find out, she seemed still so much full of life and wisdom to share.
For some reason black is all the rage, black frame, all black cells. It's like a fashion statement and black is the current fashion trend, but I personally find the dark cobalt blue color of polycrystalline panels highly attractive.
Good Job and explanation made simple. I was leaning towards Mono.... over Poly..... but now I realize it's not critical to worry about either. Thanks for breaking it down!!! :D
So, on a boat in the hot tropics, clouds, and partial shading, the Mono would be a "little" more efficient on 3 different areas. Does the 3 little benefits add up to something worthwhile or just still a little difference?
I know this video is a bit old, but I live in a very hot city. Should I prefer polycristalline panels because of its color, meaning it would heat up less than the monocristalline one?
good day or night, mono is more expensive and higher wattage , poly is cheaper but lower wattage, then which of the two is more durable? which of the two will last longger in time ?
I have mounted 6 mono panels (300watt eac). I m planning to add more panels. Can i combine them with 4 poly panels of same wattage? Will it affect over all efficiency? Or go for mono panels only. Here temp go up to 46c during summer.
You are in a location that would benefit from mono panels because of the extreme heat. If you can't get them, and have to use poly panels, it may be worthwhile to get a second charge controller to run the poly panels and not have them affect the mono panels. I suggest comparing the temperature coefficient on the datasheet between the 2 types of panels you are looking at. If the numbers are similar, it may not be a problem.
altE I had same question. Thank you for answering! Monocrystalline seems the way to go since I'm a big fan of taking solar technology and batteries to the next level.
if you say about the less than perfect light, does that include panel angle? if I have a flat roof, would Mono behave ok flat on the roof (with brackets to lift off roof) than Poly?
I watched a video I f will prowse measuring outputs of several mono and poly panels. He showed the rich solar 100w polycrystaline had the highest output. So I ordered six of those for m RV solar build.
Not to be too technical but 17. 5 is almost a 13% gain from 15.5. what is more important when comparing panels is % of gain not overall efficiency..... Did I do my math correctly? Lol's Great info on this vid, helped clear up some things for me...
I have heard mention that mono-crystalline is more effective where partial shading of the panel might be of concern. Specifically, that if a poly-crystalline panel is partially shaded, the output of the entire panel (i.e., even the unshaded part) is significantly reduced, while for the mono-crystalline panel, the output of the unshaded portion of the partially shaded panel is unaffected. Can you either confirm or debunk that claim?
+Peter K. I can debunk that claim, absolutely. Mono and poly solar panels are both wired the same way, and with the same material. It's just the way they turn the silicon into cells that is different. They are both affected by the sun, and lack of it. The mono may be ever so slightly less affected by shade, but they are still affected none the less. I'm running out f good weather for the year, but as soon as we get sun in Massachusetts again, I'll do a demo comparing mono and poly outside in the sun to prove my point.
No... No ! your math is incorrect. 15.5 % vs 17.5 %.. yes, that is a 2% difference on the scale of 100%,,, but the change from 15.5 to 17.5 is 12.5 % I believe the ONLY reason that the total output of the two panels is so close, is because,, with missing corners,, the mono-crystaline panel has substantially less area exposed to the sun. The real difference would be in their low or compromised light conversion abilities.
Hello miss. Here we have two months of extreme cold with fog. Two months with extreme hot with 46 degree centigrade temperature. Two months with rainy season. Which type of solar panel we install???
Current doesn't drop with increase in temps, its voltage & power that do. That's why the temp coefficient for current is positive and the rest negative
+Ommmm Mono panels can perform slightly better in overcast or hazy conditions. But again, the performance difference is very slight, and varies between manufacturer's, so one manufacturer's poly may perform better than someone else's mono, depending on their manufacturing process.
WOW I have that very same ARCO panel u just showed and yes mine still works too. Bought it for $5 at a flea market some 10 years ago and it is still in service.Taking it down next month and replacing it with something newer.
Most panels have a 20 to 25 year warranty, with an expected life of twice that. I have seen solar panels from the 70s that still work fine, but with a little less output power.
How about constant daily temperatures of 40+ how much power would we lose? Actually I would have thought the more sunshine the more power. I was wrong again. DUH!
another dealer I know that lives in Oregon area, says that the poly panels out perform the mono because of the sun's position which would be similar here like in the Berkshires. but you are saying the opposite. we certainly don't live in the desert. john
+Rev John O'Toole I'm not sure what their logic is. Perhaps saying it is a better performance for the money, I would certainly agree with that. Other than extreme conditions, the two technologies would likely perform the same, and therefore poly may be the winner simply because of cost. The differences of the two are so minor these days, it really isn't worth worrying about.
If you are using a grid tie inverter or a charge controller for off-grid, you most likely will never need an external bypass diodes. We did a video on that, ruclips.net/video/5rYy0gHZepI/видео.html.
In your opinion Amy, what are the best quality solar panels available in America today. They can be manufactured inside or outside the country, I'd just like to know your top 3. I've heard good things about Kyocera, Sun Power and Costco offers grapesolar I think is the brand but if you were buying solar panels for your own home and money was no object and you wanted panels that generated the most power, size being equal, which would you chose? Thank you for your great videos. Best regards.
I am a huge fan of both SolarWorld and Kyocera panels. Tremendous quality and value, and terrific companies to deal with. With a few extreme exceptions, I don't see the benefit to paying so much more for SunPower panels, yes they are more efficient, but the premium price you pay for them makes the payback time less appealing. (I know you said money's no object, but I'm a New Englander, money is always a factor). I personally haven't used the Grape panels, I hear they are fine, but can't give an opinion. Same with LG, I've heard good things, but haven't dealt with them. Basically, all tier one solar panels meet the high quality requirements, some are better than others, but all are good. It's some of the no name Chinese panels that have quality issues.
This panel can put out close to 100 watts ruclips.net/user/postUgkxOqI2yqX0XVrhR2BMJciTWrHJpG8FhJyg when positioned in the appropriate southernly direction, tilted to the optimal angle for your latitude/date, and connected to a higher capacity device than a 500. The built in kickstand angle is a fixed at 50 degrees. Up to 20% more power can be output by selecting the actual date and latitude optimal angle.The 500 will only input 3.5A maximum at 18 volts for 63 watts. Some of the excess power from the panel can be fed into a USB battery bank, charged directly from the panel while also charging a 500. This will allow you to harvest as much as 63 + 15 = 78 watts.If this panel is used to charge a larger device, such as the power station, then its full output potential can be realized.
This is what the internet is for - for me anyway. I can learn things at my leisure, hardly a book required, taught by people who know what they're talking about for free. Before the "net, I'd have to attend a special class somewhere at some cost, materials required. Thi was well worth watching as have been many others. Thanks!
This can all be summed up in one short sentence.
“The college of youtube”
Thank you for everything, Amy. I never got to speak to you as I came to the game rather late but I can totally imagine that you are missed by everyone. RIP.
She's late? How sad 😔
😢
Your video is brilliant, you are the first person I've heard that has quickly, clearly and concisely described the difference between mono and poly panels, well done and thanks. Just need to convince everybody now to start getting them on their roof tops.
All her vids are concise and informative
it's about time solar panels were explained in plain English. thank you alt e. and thank you Amy
I'm a real late comer on solar systems. Looking forward to educate myself. Thanks for putting this up.
Then go to Will Prowse
@@dirgesinthedark5637 Thanks will do!
Nice comparison of mono vs. poly panels. Both work great so long as you buy Tier 1. If you are space constrained you will want to go with mono because you can achieve greater energy density. But for most homes and businesses, poly will work just fine. Let's grow solar!
Hi Tim, what does tier 1 refer to? Thank you.
Tier 1 solar panels are built with higher standards (to last longer and produce abundant solar power) and have a highly regarded reputation within the solar industry for quality and service
Thank you for this very nice explanation!
There is a mistake made however at 4:00 to 4:40. The short-circuit current actually increases with temperature, hence the positive temperature coefficient. The open-circuit voltage decreases (much faster) and the overall power output also decreases; both have negative temperature coefficients.
To those interested:...…...I had a mismatched, 4,400 watt array that was Cooled by a single (Isolated) 12v panel hooked directly to a computer fan, drawing cool air from corrugated tube, just underneath the ground. Not needed when sun was at low angle, so no battery needed. It helped to produce more power during hot days, instead of common overheating losses.
This is the best quick comparison I've seen so far. Well presented too. Thanks!
Lets see, SHE deliberately left out the TRUTH. Poly produces MORE KWH per day that Mono. Why? Because Mono has to be pointed directed at the sun and or put on a tracker to get full output. Poly can be off up to 10 degrees to get the same power. Obviously they are over stocked in Mono so its the best thing since sliced bread now.
I see little evidence that Angle of Incidence has a meaningfully divergent effect on mono vs. poly.
If you have a citation for the claim I'd be happy to read it and revise my position if needed.
Digression: folks who strive for Critical Thinker status (as you indicate in your profile) generally avoid emotional language and groundless accusation, and try not to project motivations onto others.
Gyppor szzzxxx.
Oa
yup, they'd make renewable doable
Comparison is clear, informative and lucid. It solved many of my doubts on solar panels. Immense thanks for preparation and presentation.
I needed this. It comes at a time when I thought I have made a mistake of buying a poly crystalline panel.
I think just use what looks good to you either the color or the performance.
Thanks for the video.
What you do not take into account is Livespan. Multicrystalline Panels (poly is the wrong word, since polycristalline silicon is the refined silicon, say the rawmaterial) will degenerate much faster. So in the long run mono is always better.
I have a 100 Watt Monocrystalline solar panel mounted on my RV roof. up here in the Rain Shadow on Vancouver Island, we get many cloudy, rainy days (even in the summer). I am quite surprised at the power generation I am getting on overcast days.
Amorphous Kicks the crap out of Mono and Poly
It was my understanding that amorphous panels are less susceptible to partial shading issues, but they are less efficient (lower wattage per square meter). Are you talking about low-light conditions? Have any data to back up your claim?
Mark Job d
Absolutely excellent! Technical, objective, and fair comparison of the two technologies. Thank you!
This is the best comparison information I've found yet.
2% more efficiency is ca. 12% more Power output, circa 17.5/15.5=1.12
That doesn't corrolate with the figures she gave e.g. 260W Polycrystalline vs 270W Monocrystalline>
I calculate a 3.7% difference in output power!! Go figure!
@@av6966 probably a bit more surface area on the poly, as the corners aren't rounded. But that wouldn't make up the difference.
@@ancapftw9113 I'm new at this but how did you figure this number number up? Thought if its 2% should be .02
I would stand by with what the lady said. It may be just the stupid talking out of me, same concept but other way around. Your car/truck battery, if its say minus 15 degree Fahrenheit and not been started for few days, your vehicle battery only had 2 different cranking amp categories. One is CCA for temperature is 32 degrees fahrenheit or lower and another section is CA which is temp is above 32 degree Fahrenheit. Can you guys take a guess what's the result would be those 2 sections in different temperatures? Cold temperatures will drop your voltage from 12 to 6 volt depending upon the condition of the batteries. But your amperage will go up. Chances are it's not gonna get it's full cranking amp on time because batteries just died on you. Above 32 degrees voltage will drop around 9 to 10 and still get almost full cranking amperage. My point is that there is some things that certain things will kill certain things effectiveness. I may be wrong, the hotter it comes, the more resistance it will form causing the best effectiveness to drop a bit. But hey 2% that's not much at all. Heck can fix that problem real fast, if it's a concerned, add another backup supply battery lol
@@matthewdavis7780 they are measuring efficiency differently. While the overall efficiency is 2% greater, it outputs 12% more power.
One is comparing the output to the ideal efficiency (100%), the other is comparing the panels to each other.
Think about it this way: If I have a 5 gal can for gas, but it only has a gallon in it, it's 20% full. If I add and another quart, it's 25% full. The way she's measuring it, that's a 5% increase, but I actually have 25% more gas in the can.
Thanks for not wasting my time with a lot of unnecessary babble. Clear and to the point .
Greetings from Germany! Thanks for enlighten me, Amy!
Great video! Texas heat can stay over 100 degrees F for months, so it would definitely pay to use the Monos! Thank you very much!
AMY BEUDER GREAT PRESENTATION ON COMPARISONS,,RESPECT FROM PAKISTAN.
The only thing not mentioned was longjevity of the different panels. What is the expected lifespan of each panel??
1 like from India
The explanation was in a simple and understandable way.
A very informative, well presented video.
Real real good presentation. I hope the videos on the other components are as good and clear. Thank you.
Thank you Amy! That's was as easy to understand as it was to watch!
Really nice breakdown of the solar panels and pluses n minuses
Excellent excellent excellently presented and very easy to understand. Great job.
I understand where you get the 2% difference, but my math says that the 17.5% mono panel is actually 12.9 % more efficient than the 15.5% panels.
2÷15.5= .129 ( or 17.5 ÷ 15.5 = 1.129) expressed as a percentage as a 12.9% increase. Love your videos, looking in to getting some solar for our RV. Thanks!
You are right, I missed that day at math class. I totally blew it.
I have mono panels and when I got them I tested them in the winter and they outperformed the giving data
2 years later they still outperform the giving data in the winter.
Is there any difference in longevity of life between mono and poly panels.
Sorry for the delay in response. That's a really good question. I reached out to solar panel manufacturers who make both types, and was told that there is no difference in the technology that would cause one or the other to degrade faster than the other. The National Renewables Energy Lab (NREL) has published papers on the different degradation rates of module technologies; the primary contributor to degradation between mono and poly is quality of manufacturing and material selection, not the cell technology itself. So it's really more about how they are made, not which technology.
Thank you very much for answering that question.
WOW! Funny how things change. Good explanation, and thumb up for the video. Thanks Amy.
I've read that Poly perform better on hot climates compare to mono crystalline, despite of its heat tolerance, this is due to cell color. The pure black color of mono causes the panel to absorb more heat. I believe this is true, this is why poly is recommended in our country (Philippines). May I have your opinion about it?
That certainly could be, especially if the panel has a black frame and black backing sheet. But once again, the differences really are not huge, so whatever panel works for you is a good choice.
You are mistaken at 3.57,the current increases while the temperature rises. It is the voltage that drops significantly and hence overall power. Refer the - sign in front of temperature coefficients. Good presentation though:)
But I have seen in other videos and websites that claim Polycrystalline solar panels have lower temperature coefficient than Monocrystalline solar panel. Hence Polycrystalline solar panels performs better than Monocrystalline solar panel at high temperatures.
Myself from India and I got two 100W polycrystalline solar panels for installation in my home to reduce electricity bills.
+Dinesh S Different manufacturers have different results, so Brand A's poly may have a better temperature coefficient than Brand B's mono. But when comparing the same brand's panels between mono and poly, I found that mono had either a better than or equal to temperature coefficient than poly. But again, the difference, if any, was so slight, that it really did not make much difference at all.
Just one example:
SolarWorld Mono:
Pmpp -0.41 %/K
Voc -0.30 %/K TC
Isc 0.04 %/K TC
NOCT 46 °C TC
SolarWorld poly:
Pmpp -0.41 %/°C
Voc -0.31 %/°C TC
Isc 0.051 %/°C TC
NOCT 46 °C TC
However, Canadian Solar showed no difference between their two types, but SolarWorld's poly has better Isc temperature coefficient than Canadian Solar's mono.
Canadian Solar mono & poly:
Temperature Coefficient (Pmax) -0.41% / °C
Temperature Coefficient (Voc) -0.31% / °C
Temperature Coefficient (Isc) 0.053% / °C
Nominal Operating Cell Temperature 45±2°C
Moral of the story, both technologies are great, use whichever solar panel fits your space and budget.
+altE Store : Thanks for providing this information with examples which is very helpful to understand.
The biggest revolution : use solar PV crystals / glasses for solar windows , to be used in flats (multi-stage buildings) in cities.
altE z
Rest in peace ( teacher) i just read the bad news.🇬🇷✝️
I'm sorry to ask but what did happen? I was just searching information and I assume the speaking lady in this video passed away? That's sad to find out, she seemed still so much full of life and wisdom to share.
What about longevity? Does one type tend to last longer than the other?
Nice presentation. Well organized and informative. Excellent delivery.
It is mentioned that the manufacturing processes cost different amounts. How much specifically do they cost?
For some reason black is all the rage, black frame, all black cells. It's like a fashion statement and black is the current fashion trend, but I personally find the dark cobalt blue color of polycrystalline panels highly attractive.
Good Job and explanation made simple. I was leaning towards Mono.... over Poly..... but now I realize it's not critical to worry about either. Thanks for breaking it down!!! :D
So, on a boat in the hot tropics, clouds, and partial shading, the Mono would be a "little" more efficient on 3 different areas. Does the 3 little benefits add up to something worthwhile or just still a little difference?
How can one video give so much information. Awesome Explanation
Thank you, Professor, for this valuable information
Please correct me if I’m wrong, but isn’t the difference of 15% and 17% cost difference actually be a 12-14% increase of output, not 2%
I know this video is a bit old, but I live in a very hot city. Should I prefer polycristalline panels because of its color, meaning it would heat up less than the monocristalline one?
I really love this. Answered ALL the questions I have in mind and allayed my fears about Polycrystalline Panels. Thanks!
good day or night, mono is more expensive and higher wattage , poly is cheaper but lower wattage, then which of the two is more durable? which of the two will last longger in time ?
which one is better
Always enjoy your solar explanations. Job well done!
Nice job Amy it looks like you love what you do which is good
What do you prefer?
which one you prefer for 1kw rooftop system?
I prefer polycrystalline.
I really don't have a preference, they are so similar to each other these days.
I have mounted 6 mono panels (300watt eac). I m planning to add more panels. Can i combine them with 4 poly panels of same wattage? Will it affect over all efficiency? Or go for mono panels only. Here temp go up to 46c during summer.
You are in a location that would benefit from mono panels because of the extreme heat. If you can't get them, and have to use poly panels, it may be worthwhile to get a second charge controller to run the poly panels and not have them affect the mono panels. I suggest comparing the temperature coefficient on the datasheet between the 2 types of panels you are looking at. If the numbers are similar, it may not be a problem.
altE
I had same question.
Thank you for answering!
Monocrystalline seems the way to go since I'm a big fan of taking solar technology and batteries to the next level.
So wich one is better?
Information you provided was very good. Glad to see you finally fixed your hair at the end of the video! 😳
Which one, of the two last longer, before they need replacement?
What about the claims that if a monocrystalline panel is shaded in the shade it can stop the whole system from charging?
if you say about the less than perfect light, does that include panel angle?
if I have a flat roof, would Mono behave ok flat on the roof (with brackets to lift off roof) than Poly?
Which one lasts longer on average? Or is that determined by the manufacturing quality only?
No no no dont fix your hair. It was perfect. I have no clue why but Amy gets sexier with every video.
Please see an optometrist, soon.
in a very hot conditions like in asia ..46 degrees in summer which one is better...??????
I watched a video I f will prowse measuring outputs of several mono and poly panels. He showed the rich solar 100w polycrystaline had the highest output. So I ordered six of those for m RV solar build.
thanks a bunch, just the information i was looking for, short, precise, informative and to the point. Much Appreciated
Which one is greener to build? The heat required to make these takes a lot of power, coal.
Not to be too technical but 17. 5 is almost a 13% gain from 15.5. what is more important when comparing panels is % of gain not overall efficiency..... Did I do my math correctly? Lol's Great info on this vid, helped clear up some things for me...
I have heard mention that mono-crystalline is more effective where partial shading of the panel might be of concern. Specifically, that if a poly-crystalline panel is partially shaded, the output of the entire panel (i.e., even the unshaded part) is significantly reduced, while for the mono-crystalline panel, the output of the unshaded portion of the partially shaded panel is unaffected. Can you either confirm or debunk that claim?
+Peter K. I can debunk that claim, absolutely. Mono and poly solar panels are both wired the same way, and with the same material. It's just the way they turn the silicon into cells that is different. They are both affected by the sun, and lack of it. The mono may be ever so slightly less affected by shade, but they are still affected none the less.
I'm running out f good weather for the year, but as soon as we get sun in Massachusetts again, I'll do a demo comparing mono and poly outside in the sun to prove my point.
I love when adorable women explain stuff.. thanks for the information. I really appreciate it.
I think it s a mistake when you said: short circuit current drops, it doesn t drops, it s increasing by the temperature for sure for 0.04/K
No... No ! your math is incorrect. 15.5 % vs 17.5 %.. yes, that is a 2% difference on the scale of 100%,,, but the change from 15.5 to 17.5 is 12.5 % I believe the ONLY reason that the total output of the two panels is so close, is because,, with missing corners,, the mono-crystaline panel has substantially less area exposed to the sun.
The real difference would be in their low or compromised light conversion abilities.
don't be so paranoid
LOL @ Period! (4:59). Thanks Lady. I have 4 monos but haven't put them on the roof yet. I want to make them portable.
Hello miss.
Here we have two months of extreme cold with fog.
Two months with extreme hot with 46 degree centigrade temperature.
Two months with rainy season.
Which type of solar panel we install???
2 poly and 2 mono series of 2 then parallel. and be happy 😊
Current doesn't drop with increase in temps, its voltage & power that do. That's why the temp coefficient for current is positive and the rest negative
She explains so well !! Thanks a lot ! ☺
Is rate of degradation marginal between the two? I usually find mono panels with longer warranties.
great explanation thank you. I especially liked the image of polycrystalline.
Or how long each type perform, as in years. Cost effective means time effective, and was not discussed in this video.
Is there is a difference in energy production between monocrystalline and polycrystalline under overcast conditions?
+Ommmm Mono panels can perform slightly better in overcast or hazy conditions. But again, the performance difference is very slight, and varies between manufacturer's, so one manufacturer's poly may perform better than someone else's mono, depending on their manufacturing process.
Hazy skies? So in the real world atmospheric aviation geoengineered skies, go with the mono.
Yes
WOW I have that very same ARCO panel u just showed and yes mine still works too. Bought it for $5 at a flea market some 10 years ago and it is still in service.Taking it down next month and replacing it with something newer.
I'll bet bet you can get MORE than $5 for it today too.
How about ribbon pullers?
Thanks for this excellent explanation! Very clear and covered it all.
Can poly solar panel be mixed with mono solar of same wattage ? What be the affect ?
This was very informative. but you did not talk about a life time of this panels. can you provide any information about the lifetime?
Most panels have a 20 to 25 year warranty, with an expected life of twice that. I have seen solar panels from the 70s that still work fine, but with a little less output power.
You explained it simply so evan I could understand, thanks.
Any chance you can update the video ?
So it's better to use monocrystalline in hot weather ?
For big quantity of solar panels in desert
In extreme heat, mono is best.
altE - in my country it get to 60 Celsius
Thanks a lot you are the best solar expert on RUclips
'
i consider that extreme heat. Of course, where I'm from, we consider anything above 30C extreme. ;)
How about constant daily temperatures of 40+ how much power would we lose? Actually I would have thought the more sunshine the more power. I was wrong again. DUH!
Hi AltE, Is this a non-biased study of both? Researching on which I should get. Thanks.
I think it is non-biased. Unless you have an extreme situation, get whichever one you can get a good deal on. Both work great.
+altE thank you
another dealer I know that lives in Oregon area, says that the poly panels out perform the mono because of the sun's position which would be similar here like in the Berkshires. but you are saying the opposite.
we certainly don't live in the desert.
john
+Rev John O'Toole I'm not sure what their logic is. Perhaps saying it is a better performance for the money, I would certainly agree with that. Other than extreme conditions, the two technologies would likely perform the same, and therefore poly may be the winner simply because of cost. The differences of the two are so minor these days, it really isn't worth worrying about.
Do you need by-pass diodes if only using panels in a grid-tie situation? Or can you skip them?
If you are using a grid tie inverter or a charge controller for off-grid, you most likely will never need an external bypass diodes. We did a video on that, ruclips.net/video/5rYy0gHZepI/видео.html.
Thank You Amy !
It was informative and exhaustive. Much appreciated.
thanks is a small word for your great work. thanks madam
Thanks for a well done quick explanation. You definitely answered my questions about the different panel types.
Thanks Amy. Great video with good technical explanations and examples.
if temperature above 45 dg cel which panel is good Polly or mono
A bit late to the party, but seriously -- thanks for these short introductions.
FAST FORWARD to time index 2:31 if you just want to know which panel is better and why
In your opinion Amy, what are the best quality solar panels available in America today. They can be manufactured inside or outside the country, I'd just like to know your top 3. I've heard good things about Kyocera, Sun Power and Costco offers grapesolar I think is the brand but if you were buying solar panels for your own home and money was no object and you wanted panels that generated the most power, size being equal, which would you chose? Thank you for your great videos. Best regards.
I am a huge fan of both SolarWorld and Kyocera panels. Tremendous quality and value, and terrific companies to deal with. With a few extreme exceptions, I don't see the benefit to paying so much more for SunPower panels, yes they are more efficient, but the premium price you pay for them makes the payback time less appealing. (I know you said money's no object, but I'm a New Englander, money is always a factor). I personally haven't used the Grape panels, I hear they are fine, but can't give an opinion. Same with LG, I've heard good things, but haven't dealt with them. Basically, all tier one solar panels meet the high quality requirements, some are better than others, but all are good. It's some of the no name Chinese panels that have quality issues.
Thank you Amy.
noviceprepper53
Thank you so much for your clear and concise explanation!