Solar panels are more efficient in winter or summer? 40% Efficiency DROP Yes, heat does affect them!
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- čas přidán 16. 09. 2022
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Very good point you are bringing up here. I live in arctic Sweden, where winter temperatures frequently reach -40 degrees, and the impact is enough to making sure your inverters/charge controllers can handle the excess power production, ie. 1250W inverter per 1000W panels. (Specs are usually listed with ambient temps of 25°C - STC) Incase some people don't believe your results, and claim it's due to prism effect or cleaning, look at solar panel specs, you'll find a set of specs called something like "Temperature coefficients of Pmax" which could show "-0.35%/℃", meaning that every degree above 25°C (STC), you lose 0.35% power (and gain 0.35% per degree you are below 25°C = 65*0,35 = 22,75%). Living in an area that has seasonal temperature variations of around 70°C (125°F), this becomes quite important.
Very good info, you obviously know what you are talking about
You can make it cooler in summer just by making a gap 3-5 cm form the upper part of panels to the wall. So hot wind can go up in that gap=)) Thanks for video, we do mainly have opposite problem in -20C Voltage get to high
That's a great idea!
This is a topic of yours that greatly interests me. Nice to see you back and hope your Old Boy is doing well.
glad to have you here !
Excellent video and test! I live in Georgia and was only getting 50 percent of rated on a HOT day so this makes sense
Thank you for another awesome video. I am still learning about solar and did not know that performance is degraded in high heat. Interesting!
yeah i've learned the hard way myself , so when you got a 5 kw system in summer you only get 4 but for more time because of longer day, suprisingly it evens out with winter , so you get the same amount of power
Using fan's would make the cooling constant and easier, "Tech ingredients" made a video about how much cooling improves solar panes efficiency, to the points it's actuality worth doing, and life time, especially in hotter climates.The vide is called: "Do you REALLY get enough out of your solar panel?".
Finally someone shows the true solar panel output results and NOT ONE of the CZcamsrs speak on this issue. But, those so call YT gurus are quick to provide you links to where you can buy your panels. Those Influencers are a joke!
I'm glad you liked the video and yes , I try to influence myself sometimes but I try to provide a service first ..
Thanks a lot really good information
Thx very interesting... living in Finland they said that while we have less sun, the cold weather makes them more efficient when we have it... was wondering if that was a marketing trick... but it seems to at least have some real basis.
straight to the point. And pretty sure the water in the hose was hot too so the first few seconds/minutes with the mist you were using hot water to cold them down!
Evaporation is what cooks them off , but yes I wish I had lots of ice cold water
Well crap. I live in South Carolina. It’s 300 degrees in the middle of the night in winter here.
Space them out to let air out from undernieth and get another pannel to run a fan to keep them cool
The fan will use more power than I save ....
In data sheets manufacturers say that they highest temperature of tje solar cell is 85 degrees…i was shocked seeing your panels are on 120 and not melting
Super interesting. I see all these roof mounted panels in Phoenix area and had heard heat robs efficiency. I had no idea the efficiency drop could be this much. Wow. I am a huge proponent of solar but why is this topic hardly ever mentioned in the discussion?
Yeah on 5kw system you loose 40 percent that's 3kw only in summer time , winter you get 5kw for 6 hours of light so there you go .. solar is a bit of a scam
I have 800 watts of solar panels...and in the really hot summer, the efficiency drops terribly, once the panels get hot...I only get 360 watts out of them . Trying to figure out a easy way to keep them cool.
water cooling is best but that entails a lot more work to do;
my 8 panels can produce 1800watts or 1050 watts under full sun at the same day time, only because of temps difference.
You can do an easy DIY water misting using an aquarium chiller, some irrigation spraying nozzles, and a small plastic gutter to capture the water and recycle it. Throw an inline filter to keep the water clean and you’re good
Hi, In this video you mentioned that your summertime energy production went from 320 watts to 420 watts just by adding water to cool down your panels. Unfortunately, the video ends before the panels start heating up again. Can you tell me how long it takes to go back from 80f to 120f or energy-wise from 420w to 320w?
In this video I can observe that the energy production goes from 320 watts to 400+ watts once the panels have been cooled down. Unfortunately the video ends before they start to drop on energy efficiency. Perhaps this would be a nicel video to watch... it's summertime again and we can see if you can increse your energy production by just spraying your solar panels every 20 mins or so. I'm very interested on that
Run a 12 volt high pressure pump and misters underneath and a drip system to reclaim the water
I've was going to put heat sinks on our panels, but the cost is prohibitive.
Active cooling 🫣
here in montreal canada we get 80 to 90 degrees is that hot for you
I would like to see Enphase microinverters output at 120 degrees. They are rated to 60 degrees celcius
I keep mine in the house .. they do get hot otherwise and reduce their life
The conclusion is solar panels get dehydrated and need to be re-hydrated with a cool beverage to perform optimally. 👍
Yeess
What kind of tool did you use to convert a degree?
It's a digital infrared temperature sensor
There's one final and very important point. How long does that last? I was hoping to see the extact moment the panel starts to go back to normal.
Slow degradation over time , not they don't really die
@@TheCrazyRomanian Hi, In this video you mentioned that your summertime energy production went from 320 watts to 420 watts just by adding water to cool down your panels. Unfortunately, the video ends before the panels start heating up again. Can you tell me how long it takes to go back from 80f to 120f or energy-wise from 420w to 320w?
In this video I can observe that the energy production goes from 320 watts to 400+ watts once the panels have been cooled down. Unfortunately the video ends before they start to drop on energy efficiency. Perhaps this would be a nicel video to watch... it's summertime again and we can see if you can increse your energy production by just spraying your solar panels every 20 mins or so. I'm very interested on that
I appreciate your quick reply :)
LOL - use the electric from the solar panels to power some air con to cool the solar panels.
You forgot to mention that the temperature shortens their life as well.
I was planning to install some solar panels at my place in Saudi Arabia..
Damn I'm doomed!
I live in California, and my solar panel doesn't work that good if the temperature is over 100F compared to spring times
bro actually you are partly right and partly wrong, because, sun is tilted in the sky during winter and your panels are also tilted, so higher generation happens during winter. At this much tilt, the generation would drop during summer. Lower the panel tilt and then compare the results.
My panels are on hinges and I do move them twice a year for summer angle and winter angle so that was part of the test, basically I have to holes in the wall I just move that stick that holds them
@@TheCrazyRomaniangreat. So you mean even after lowering the tilt, the peak generation is lower in summer ?
🙈 ᴘʀᴏᴍᴏsᴍ
😎
That setup looks non efficient in general
His is rediculous!