Measuring The Impact Of Solar Panel Tilt Angle

[@everydaysolar]

Calculate Solar Cost For Your Home - geni.us/solar_reviews Ecoflow Delta Pro: geni.us/smzZiC Solar Panel Mounting Angle Calculator: geni.us/z8r7 DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.

[@cherwilco]

there should be additional heat loss on the flat panels from this testing setup. I would have tested those flat panels elevated about an inch or two off the concrete to allow for normal airflow under the panel, that way this test shows only the losses attributed to angle and not angle plus the extra heat being held under the flats. a lot of roof mounting hardware has panels elevated an inch or two even when flat

[@everydaysolar]

Fair point, thanks for the feedback.

[@Mr1DANBOY]

I was thinking the same thing. That concrete has to be getting some heat even in September.

[@johnzach2057]

It's not only that. A flat panel will actually produce more electricity during early morning and late afternoon than tilted panels.

[@bloepje]

@@johnzach2057 I would think a vertical panel would produce more electricity... (Yes, I am in an area where 50 degrees is advised in the winter and I have bifacials, so why not let it catch all around

[@jumboegg5845]

Here in Southern Australia seems best angle is to maximise sun when its low in the sky and days are short. Around summer when the sun is high and days are longer, the panels are saturated and also get extremely hot, so the tilt makes no difference, and may actually keep the panels slightly cooler by reflecting some sun..

[@Handirifle]

Very interesting approach. Makes perfect sense, since the low light hours are usually wasted, and you are correct, the excessive heat is detrimental to longevity and output.👍

[@tanalson]

You could actually increase efficiency by continuously spraying water on the panels

[@martiruda]

what degree of tilt is this comment related to? my roof is 5 deg tilted and that's what I want to keep for my panels

[@jumboegg5845]

@@martiruda I didn't express myself very well 11 months ago! The rule of thumb is that the angle of the panels should be similar to your latitude. So here in Melbourne (southern Australia) latitude 38 degrees south, the panels should be facing true north at an angle approaching 38 degrees. Exactly 38 degrees will optimise it only in the depths of winter, so really you want the angle roughly 30-35 degrees, to best capture the sun over a long period either side of winter. What's your latitude @martiruda ? 5 degrees would be pointing almost straight up, that would be the angle if you're close to the equator, but you dont need to optimise the angle when close to the equator, because more than enough sun to saturate the panels all year round. You want to optimise the angle for the time of year when solar radiation is the least, which is the 6 months around winter in temperate/middle latitudes.

[@bloepje]

For an off-grid person, the winter is all I care about. Did the whole summer with 4 panels off grid, because it was too hot to add panels. If I would have switched on the A/C I would have needed those extra 4 panels.

[@fredturk6447]

It’s fairly simple in concept. The efficiency of the panels is proportional to the cosine of the angle between the direction of the Sun and a perpendicular from the face of the panel. So, for example, 30 degree difference (cos(30) = 0.87) will give about a 13 percent reduction in power compared to a 0 degree angle. The angle between the panel and Sun will be very high in the morning and evening and smallest at midday provided your panels orient south or north depending which hemisphere you are in. Since you might want to maximise power in winter you could argue that pointing the panel directly at the Sun for its midday middle of winter direction would minimise the seasonal power generation but not necessarily get overall maximum annual power generation. (If you live too far north/south that might not be a good strategy!) I am sure there are web based power estimators which will graph power for specified panel orientations.

[@andrewford80]

I love comments like this. I wish I had your ability to articulate the importance of maths to those who say dumb shit like "What is the point in learning this? I will never use it once I leave school"

[@virtus068]

Nice test, but it should be tested over 24 hours instead of two hours.

[@everydaysolar]

Yeah, a dawn to dusk would be interesting. I need better data collection equipment so I can over plot each power output curve. Thanks for the feedback.

[@solarcabin]

You need to consider both angle and tilt. In general in the US you want panels facing true south not magnetic south and for a fixed mount most systems are angled to get the most sunshine in winter when the sun is lower and you get shorter sunlight hours. You can use that footprint website to determine both based on your geographic location. For a roof mount system you generally have little choice unless your house was designed specifically for solar and you are stuck with whatever angle and tilt your home roof was built at unless you want to pay for expensive adjustable roof racks. That is why I recommend ground mount with an adjustable angle so you can maximize your solar angle for both summer and winter use. You can use a much smaller system that way and maintenance is also much safer and easier on a ground mount. By having the proper angle and tilt and ability to adjust for seasons you can use a ground mount system about half the size of most roof mounted systems.

[@solarcabin]

Added: You also do not want panels mounted flat on any surface as they require air flow to remove heat behind the panels and heat is what reduces output and causes cells to fail early.

[@everydaysolar]

Yeah, if I had the room and no HOA I would 💯 go ground mount. My first mistake was being in an HOA 😂. We will be doing some small ground mount on the EG4 mounts in the coming months.

[@WandersonRC3]

I noticed the angled panels were exposed to the sun and warming up prior to testing while the flat ones were not. This makes for an unreliable test

[@chrissmalley9948]

Would love to see a test on vertical installation using bifacial panels vs standard angle install.

[@michaelenglund]

Wont the flat panels perform better in the mornings and evenings? What is then the total loss during a summer day?

[@tom-erikjohansen456]

Opositt, the flat panles should perform better mid day when the sun is high. While the angled better in the morning/night when sun is low

[@khoachino]

I was wondering that the two setup was placed to close to each other and at 6:50, I noticed the flat panel is partially shaded by the tilted panel

[@khoachino]

And wired in series, a little bit of shade really affect the whole string

[@bruceeverett5372]

Scott, if you live in the Snowbelt (I think you may) your pergola better not have solar panels on it in the winter, the snow load could be several thousand pounds.

[@stanleybest8833]

You forgot a few things. Aiming partly east and west increases the duration of the charge and this is very important when your batteries are a small part of your solar plant. Aluminum wire can be used outdoors, even if it's considered an indoor hazard. Aluminum wire can be very thick. Panels don't have to go directly on a roof. They can go on subframes or mini towers in different parts of your property.

[@42earthling]

Also see that one of the panels laying flat is partially receiving shadow from the other panels.

[@phhowe17]

Two thoughts. MN USA with 11.6 kw ac ground mount. 1. My local code restricts the total height of panels off of the roof so stuck with the roof pitch. For ground mount, I would bias the tilt a bit towards the winter angle. During the summer there is lots of solar and your system is likely to clip (max out) your inverter, while there is less energy in winter sun due to the low sun angle.

[@martiruda]

what angle is your panels at? My roof is 5 deg just wondering.

[@phhowe17]

@@martiruda 33 degrees equal to 8 /12 roof pitch.

[@Icehso140]

In MA 25 degrees is standard for the large commercial solar sites you see. They are figured for 7 months of good exposure. The other 5 months are bonus.

[@jamesmyers5970]

Those angles, in the link, are what I was searching for. Thanks!

[@everydaysolar]

You bet!

[@canalsentir]

Great video & angle tips!

[@everydaysolar]

Thanks!

[@maximeboissonneault6203]

I would think that for lower vs higher angle for seasonal, if you are in a cold climate, I would air toward steeper angle, so that you use most of the power for heating, vs if you use more power for AC in the summer, then targeting the lower angle might be best. I know in my case, 11kW is way oversized for summer (50kWh/day in peaks) but way under sized for winter (150kWh/day in peaks), so if I went solar, I would want to optimize for winter

[@ranger178]

how is your winter power so high? are you using resistance heating im in pa and summer is twice as much electricity in summer.

[@maximeboissonneault6203]

it's called living in a cold climate ;) PA is not cold climate@@ranger178 We can get as low as -40 here (these are the days where I can reach 150 kWh/day).

[@surferdudemi]

If you're panels are on the roof, you're going to be clearing them quite a few times during the winter, so be prepared.

[@eddiedoherty2349]

Good apples to apples test. I did a similar thing we an RV, the panels were not the same manufacturer nor power rating. Over a period of weeks, it measured out to be 20-30%. I even rotated the angled panels 3 times a day to see how much it mattered. The improvement of rotating did not have a large impact. Setting for peak hours and forget is much easier.

[@everydaysolar]

Thanks so much for the feedback!

[@IgorYegorkin]

7:00 you also should consider shadows on your panels

[@kevinshriver7589]

I'm in NW WI and the referenced site give very different angles that other sites. Every site provides different results.

[@surferdudemi]

Is there a calculator that takes into account the seasonal changes in cloud cover? Depending upon the weather over the year, there may be more optimal times to maximize the output. There's also a difference bewteen grid-tied / net metering and off grid. If you're on net metering, you'll want to maximize total output over the year. If you're off-grid, you may want to maximize output when you need it most.

[@ianjameslake]

One thing to consider is that if you tilt the panels, you will have an increased shade area behind the panels, which cannot be occupied with the next set of panels. i.e. You can fit more on a flat roof with flat panels, that with tilted panels, thus cancelling out the loss from laying them flat (in winter). Lets do a simplified example, lets say a panel is 1m in height. When laying additional panels above(/below) each panel on a flat roof, no additional space is needed for shading of the panels. Whereas if you put the panels at a 45 degree angle on a flat roof (with sun coming in at 90 degrees that is), the height of the shaded area beneath the panel is 1.4m (a 40% increase).

[@Mimer6]

Have you taken an IR photo of the panels? There can be a big difference between the panels if some cells are broken. Or you can simply redo the experiment the next day with the panels swapped and see if the difference is the same. Thanks in any case for someone who wants to try different things and see what the result is. One thing about running A/C from solar panels is that solar panels also contribute to keeping the house cool by shading the house. As well as protecting the house's roof from being broken down by the sun's rays so the roof lasts longer.

[@thespencerowen]

I question how valid the tests are because at 6:47 you can see the inclined panels are casting a shadow on the flat panels

[@AySz88]

He comments elsewhere that he stopped the test before the shadow began to interfere. It's also not doing it yet at 5:26.

[@nielsdaemen]

High angle has the advantage of self cleaning from rain

[@user-xg5of5xm6r]

Where do you buy the rc power analyzers that come with mc4 connector?

[@everydaysolar]

Most of them don't come with the MC4 connectors standard so I just bought this inexpensive crimping kit amzn.to/3Fl1mzE

[@TomE007]

Great info thanks , I've had mine mounted flat from the distributer and rules from my city hall here in Spain . Negatives of flat as well is water build up on the panels from rain and dew in the night . We also have african dirt rains and pollen too . I saw a light film and dust staying on the panels . I've raised them myself 15% and there much cleaner and will produce better power while staying cleaner . Remember too as well that the panels will get better direct light in winter as the sun drops in angle . Summer I'm not worried about , 12 panels get more than enough in a full day . Really liked your comparison . Gracias

[@sunset7860]

Although both panels, readers and storage units are made by the same manufacturer, assuming they are identical in performance could seriously skew your result. Performing the same experiment again, swapping the panels over and averaging the result would mitigate this.

[@everydaysolar]

Thanks for the feedback!

[@garyreysa4729]

Why not just use PVwatts - works for anyplace in the world. It gives you month by month output for any tilt you want to put in. In my experience it is very accurate - developed by NREL.

[@everydaysolar]

Yeah, I should point people to pvwatts as it is a great tool. This video is a little more focused on introducing people to the importance of tilt angle in general through a simple test. Thanks for the feedback.

[@adog4180]

Would their be an way to change the pitch angle though out the year to get the best angle though out the year?

[@everydaysolar]

This is most commonly accomplished with ground mount that has an easy adjustment built into the design. For those of us with roof mounted on standard racking the adjustment would be a no go.

[@maximeboissonneault6203]

Being on a pergola, it should stay cooler, as it will have airflow underneath, which should increase your output

[@dirkschelling]

Important not to trap heat under panel. You should have raised the flat panels to get airflow under. Try that and get new readings

[@dogishappy0]

I'm in Central Alabama and have the same panels. Can you think of some trouble shooting reasons for why I have never gotten over 75w per panel, even when less than a few weeks old?

[@everydaysolar]

Really, man I have really good luck with these thunderbolts. Facing south at a 30 degree angle on a sunny day I have seen as high as 105 Watts. Could you test each one individually? If you have one panel in a series string it might be bringing all of them down.

[@dogishappy0]

@everydaysolar-ps3xg I figured it out. I'm using one of those 4:1 connectors and the Ecoflow Delta 2 Max is limiting the input to 15 Amps. That's why I'm not able to get 100% of the input. Each panel has a max Amp output of 5.56, and the connector is combining them in parallel.

[@sciglassblower]

I presume you did not have the shade on the flat panels like showing at the end of your video? The time of year you did the test will make a huge difference in results. Summer Flat will out perform the angled! Winter Flat will not work pretty much.

[@classicsoundsintlward9490]

Good evening you have impressive reports. however the comparison with angle roof and flat roof may not be accurate as angle roof only gets either morning or evening sun wild flat roof get both. How do you come for that?

[@Iamsuccesspro]

I noticed shade (reflection) cast from your angled panels on the flat panels. Perhaps of you had them switched

[@everydaysolar]

It was close and that is what actually set the end of the test. The last part of the video you could see a shadow but that was after the readings were taken for the test. Thanks for the feedback.

[@sanjuansteve]

I believe the efficiency is greatest with a tilt of 5 degrees less than your latitude. Can you do a test on that also?

[@ShaneS071]

in having panels flat on a surface the heat buildup trapped between the panel and the surface underneath cannot escape and will effect the performance as well

[@everydaysolar]

Yeah, good point. would have been nice to space them off the concrete to give some air movement/heat transfer. Thanks for the feedback.

[@elelegidosf9707]

Results at 5:54

[@Electronzap]

Good to buy smaller panels and do these tests before making a big investment. Can always use those panels for extra power during emergencies or for camping.

[@hackfreehvac]

I have panels on a pergola They are flat so they are not visible by anyone snooping. In arizona the sun is pretty directly overhead in the summer. So it works. If i could i would have them on a adjustable mount to tilt from dusk until dawn. But that dont work for my low profile setup.

[@arthendrickson4860]

I belive this video is about altitude (up/down). What about azimuth (left/right)?

[@everydaysolar]

Yeah, I want to do a North, South, East, and West comparison showing the difference in output but at this time I am short on a few components to run that all on the same day. Thanks for the feedback.

[@joeyjennings9548]

but heat makes loss & flat ones were not vented under? so loss can be pitch & heat buildup?

[@francisdebriey3609]

Thank you so much... the website enabled me to know how much I will need to tilt my panels in Norway, Senja island. I am building my tilting PV rooftop of 1000W for my Camper van... I will need to tilt up to 57°...

[@everydaysolar]

Best of luck on your project!

[@wenil638]

i would want to know for fence mount how bad is it

[@everydaysolar]

Are you planning on just installing the panels vertically on the fence?

[@newbie101]

The calculator website, are the angle numbers facing south? What if I want to face west, should I use the same angle? Can you please make a video on how to actually find the horizontal or vertical and what device do you recommend to use. Thank you for all your videos.

[@MrSkunks]

Would love to see this test done for a full day and see how each time or day affects it. Maybe at your current time, angled is best but at other times not. Maybe the difference becomes a bit less. Also raising it a few inches off the ground.

[@eco_guardian]

Where did you get the RC panel analyzers? 1:49

[@everydaysolar]

You can grab a few on Amazon amzn.to/46g8ecP

[@eco_guardian]

@@everydaysolar Thanks Scott, I'm a big fan of your channel.

[@maxtorque2277]

As the cost of the panels themselves continues to fall, what we see is that the cost of the mounting system now actually starts to make up a significant proportion of the overall spend. As a result, cheap mounting often outways "optimum capture" mounting when you look at the payback! This is particularly the case when you look at panels mounted on high roofs that now drive a large installation labour costs.

[@leehartley838]

outways?

[@Stevexnycautomotive]

What kind of wind speed your solar panel stand up to?. Is your silT circuit grounded to earth?, so lightning can hit your circuit?

[@mydogsbutler]

There is a long list of other factors that can also affect energy output but a minimum meaningful test would be an unobstructed sunrise to sunset under mostly cloudless conditions. If one also knows your ambient temps, latitude and dates of the test others could better extrapolate for different latitudes/dates/weather.

[@odeywilliams7596]

If you plug both groups together would the flat mounted panels affect the out put drastically or just a little bit

[@johnmansell5097]

I have an issue in that I have room extensions which impact the roof making it flat or just a few inches below the existing ridge. According to the local regs I cannot put anything on the roof that is above the ridge. I have had a survey done and the installer will not fit solar panels so DIY is my only option.

[@Bowhunters6go8xz6x]

There is a website that actually calculates that and shows how much off angle your panel can be before you lose power production. Most solar panels are actually very forgiving and you may only lose a small amount of power production by being off angle a few degrees, that (sweet spot) ends at about 15 to 20 degrees off angle, more than that and power production will drop off considerably when off center more than that 15 to 20 degrees either Horiz E or W or Seasonally/Vertically.

[@unclegeorge7845]

Interest test and lots of great information about solar but isn't temperature rather important? And comparing the difference between the two batteries?

[@ExcelTimeSavers]

Form this video I come to a conclusion that maximum loss when tilt is 29 deg off is 19% so if I opt for a fixed angle for my year round production Ill be wrong by 15 degrees. So if I add 20% more panels I can use the year round angle option. Please also make one video for the Azimuth angle change effect.

[@zembalu]

Thank you for your video! It gives a clue how to orient the solar panels, if they are not really adjustable. But your experimental findings are only optimal for your location, Cicago, or maybe locations on the same latitude, as you mentioned in the video, because: The maximum yield is obtained, when the panel is oriented so, that the rays of the sun hit it in a 90° angle. That is trivial, because otherwise the illuminated area is only a fraction of that. To be precise, the efficiency is cos x, where x is the deviation of that 90° angle. That varies in relation to the time of day, but it seems best to adjust it to high noon. According to your latitude, the sun reaches maximum elevation at high noon, again at cos x, where x is the latitude. According to the time in the year, this needs a further correction, known as the solar deviation, which can be up to about +/- 23°, on the equator, and must be added. The deviation curve is easily available at the www. Another important factor is the climate in your area. If there are periods with statistically known sunny days, it may be more efficient to choose an optimal angle for those periods than an average, when the sun does not shine as much.

[@jalpa9642]

You got shadow created on flat panel from the tilted panels.... That's your loss...!

[@everydaysolar]

Actually, that was one of the factors I was monitoring. I stopped the test at the 2-hour mark as we were right on the edge of the tilted panels casting a shadow on the flat panels. So, for this test that would not be associated to the loss.

[@sanjuansteve]

What time of year did you do this test, and so how perfectly perpendicular to the Sun were the tilted panels?

[@mannyfragoza9652]

Since its heading towards fall i have to angle my panels at around 1 pm i can get about 30 - 50 watts more at the right angle vs laying the flat which i do in the morning up until about 12 noon So angling makes a difference.

[@tanalson]

If you have the space, you could actually 3 more pieces of mirrors and angled it towards the solar panel. This way you could maximise energy produced per panel

[@JudyWoodley]

What angle is best for 81147 Pagosa Springs Colorado?

[@nobodynemoq]

In theory, I should have panels set to 30 degrees - better facing the average height of the Sun and dramatically better situation when there is snow. However, I have them on my roof (I have a house with almost flat roof, anout 3-4 degrees) and I decided to fill the roof with panels lying flat. Why? Because, raised panels cast shadows - and I would have to move them away from each other. That would limit the number of panels by much more than I would gain from the tilt! And during the summer, the profit from steeper angle isn't that spectacular.

[@jaymax1553]

"there is shade on the flat panels, look at the time in video 6:20" This is post data collection and wont affect the resalts mentioned in the video.

[@everydaysolar]

Yeah, it was close but that was actually post data collection.

[@jaymax1553]

@@everydaysolar sorry about that ill edit my post to not cause confusion. Love your channel.

[@Lyzzzander]

Each day we get closer to trackers 😄

[@gbone7581]

Not as the price of solar panels decrease

[@williamcox1176]

A good start, but really means nothing, you would need to run the test in an unshaded location for a year, so you get all sun elevations. I get the feeling if you just can it for a day you would get a better result.

[@martinlitorell3834]

This is not a fair test. The average distance from the ground plane should be the same. The big advantage with flat mounting is during cloudy days.

[@ssoffshore5111]

Your results were significantly skewed because the heat buildup from the flat panels laying directly on the also hot concrete. That increased heat will drastically lower performance. To make this a better comparison you probably should've elevated those flat panels 4"-6" like they would be for a typical roof mount. You can also save the testing effort and just model the difference in PV Watts... great tool and pretty damn accurate!

[@everydaysolar]

Thanks for the feedback 👍

[@gregpochet4812]

Great video and test. I always wonder how the angle of the panels would effect efficiency. I have 2 sections of my roof that are at different pitch. In my home solar install, my installer never mentioned the pitch of my roofs. I just wonder if they took the pitch in determining how much my energy my system would produce.

[@zweed69]

also consider that for a string of pv panels connected in series the worst panel always sets the output so the flatter panels will dictate if they are all connected

[@budgetaudiophilelife-long5461]

THANKS SCOTT 🤗💚💚💚

[@everydaysolar]

You bet 🙌

[@WolJaJa]

Just watch/measure the increase of the shadow when tilting and you know how big the gain is.

[@josephyeo6966]

Flat panels will accummulate more dust and bird droppings and more difficult to clean than if mounted on a slant. Besides, it will not pass Standards in some countries/states.

[@MrRichBenn]

There are a lot of variables in different panels. Some are better off axis than others, some have better temperature coefficients. Others I will leave up to you to discover. You cannot simply assume scaling to roof pnaels will be the same.

[@dimitrisd.9173]

To make the test more credible, you should measure through a full day's light cycle and not just 1 to 3 pm.

[@abracadabra2337]

6:24 you are covering the panels laying on the ground

[@esunisen3862]

Each solution has cons and pros and will vary depending on your location.

[@LeeWanner]

Video starts at 5:54

[@wt9653]

Instead of confusing the viewers with the angle calculator. A simple soup can trick would work anywhere in the world. 😂

[@FrankLowe1949]

You know what I've got the 250 what what's a leg standing on the ground from 11 to 4 p.m. charging my two lead carbon batteries 100 amp hours no charge controller connected directly to the batteries it pushes out between 8 and 9 amps facing the sun I follow the sun and the sun's angle and move the panels every 2 hours the batteries are 12 volt batteries the solar panel pushes out between 21 and 27 volts. Angle and facing the sun really matters a lot.

[@petersimms4982]

😊just get ‘em up ! The SUN 🌞 ☀️ 🌞 ☀️ is FREE for everyone! Stop filling the pockets of Big Oil 😮😊

[@pocketchange1951]

👍👌❤️🇨🇦, I get about 30% more if the panels are tilted compared to laying horizontal, but this also depends on the latitude I am at, and the season,

[@everydaysolar]

Thanks for the additional data point!

[@udmbfckx2916]

It is almost 24% from going Flat to (proper) Angle.

[@marceld6061]

4:52 Squirrel!! 🐕

[@dansklrvids7303]

Good info!

[@everydaysolar]

Thanks for the feedback 👍

[@FarqueKnowsWhere]

Great test showing how much solar farms would lose if the panels didn’t follow the sun.

[@ToThePointGarfield]

1) The RC gauges aren't all 100% the same and not reliable. Huge deviations between them. 2) This test is only for 2h not a whole day. The angled panel produces less @ dawn-dusk. The angled panel shall collect less dirt and rain cleans them more easily but that wasn't the test.

[@pocketchange1951]

👍👌❤️🇨🇦, I use my latitude as a reference for fing the correct angle, but I tap the top off of a paint spray can, I place the plastic lid in the corner of the panel, with the panels facing solar south, not magnetic south, as you raise and lower the solar panel, look st the spray paint lid and notice the shadow ring around the base of the lid, when you have the best angle the shadow will be even around the lid, and the shadow will be very close to the bottom of the lid, I have used this method for 23 years on my 36 x 405 watt solar array, simple and fast, no need for an angle finder using my phone app

[@everydaysolar]

Nice little method for finding the exact angle where the panel is perpendicular to the sun. I like it 👍

[@pocketchange1951]

Or in finding the correct, just try it on your tilted panels, it is fast and simple

[@australianmade2659]

Panels are cheap. I’d rather not see the panels and buy a few extra than look at them

[@JouniKyy-xn4kd]

Plant trees and install panels roof or wall

[@Krunch2020]

So many solar installations are an architectural abomination. If you want your house to look like an oil refinery then let the installers put panels and conduits wherever they like. If you can afford architecture then move plumbing vents out of the panel area and run wiring inside the house, even opening the walls to achieve a pleasing installation. If your house is in a tract of hideous Home Depot builder boxes then just throw panels wherever they land and disregard this comment.

[@kapdolkim1914]

Well, the calculation shouldn't be based on the angle of the panel - but the angle of the sun vs the panel.

[@azzaki8971]

jump 6:02

[@DominikDeobald]

4:52 Squirrel

[@everydaysolar]

😂

[@sircampbell1249]

Yes, tilt angel, if not, it's pointless

[@Martinko_Pcik]

E~cos(angle), where 0 degree is panel directly facing Sun

[@peteroffpist1621]

Just add some extra panels. This was interesting 20 years ago when panels were expensive.

[@Hessijames79]

The pirched panels shadow the flat ones.

[@ranxerox10]

its not the angle in your case its the temperature

[@stephanh4547]

Are you serious? You shadowed the flat panels with he angled ones .....

[@ovchannelag5238]

👍

[@rotaryenginepete]

not trying to drop a turd in your punchbowl but at the end of your video it looks like the tilted panels shadowed the flat ones...

[@percival23]

The panels at an angle will have great resistance in high winds ..it will basically act like a sail. I will take the power loss for some piece of mind when they are installed flat.

[@carlosgarcia3836]

I'm sorry to tell you but your test is flawed.

[@everydaysolar]

Thanks for the feedback