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  • It will take around 10 Years - to pay you back on Commercial Solar Panels

    If you want to cut this time short to 1-2 Years

    There is a website that explain how to Build your own Solar Panels

    just for a fraction of the Retail Price

    Just go to Google and Search for...

    "Top DIY Solar Panels Review"

    Go for the First Result (Ignore The Advertisements)

  • Hey Dan! If I get a grid tie inverter (what kind should I get?), can I add 1 solar panel at a time as I get them?

  • does this store power?? for when the sun goes down?

  • im not an expert wat so ever but im wondering what u can power with 80 watts? it doesnt seem like a lot.

  • Hello Dan,, In your example you are using a panel rated at 80watts that yields 63 watts back to the grid. In my setup I have 2x125 watt panels and 1x85 for a total of 335 watts rated.

    The problem is I am only yielding 120 watts back to the grid as displayed on my watts-up meter, Why is the yield so low. This reading was at 2pm no clouds in sky, I am losing around 50% or more and its very frustrating... Please help... Thank you,,,,

  • Solar is a big waste of Taxpayer dollars. I do love my $2 solar lawn lights that I bought with my own money, not other peoples money.

    I wonder if you live in Chicago, where the cloud cover is about 47% and the snow gets 2 ft deep, solar would have a payback? NOT

  • Which is more efficient for Grid Tie Systems? Wind or Solar? Im from the Visayas, Philippines.

  • Dan,

    WQhat would happen if you charged the solar panel with your big fenel lense?

  • what happens if the birds poop on the panels

  • Im sure I can power my car battery with this single panel.

  • @GREENPOWERSCIENCE : Hey, what kind of savings/reductions are you seeing on your electricity bill since installing the grid tie inverter in your home?

  • Comment removed

  • Hi Dan' Will that Grid tie inverter Work If I Have A New Smart Meter that Edison put in my House . And the Guy that put it in Said : The Smart Meter, Don't Run Back Wards! so Would it sill lower my Elec Bill ? ty for your Time Nice Videos ! See ya .

  • How many monocrystaline cells make an 80 watt panel? And is there a way I can wire my polycrystaline cells in parallel so I can increase the wattage? I was thinking of wiring 36 cells in series and then doing the rest in parallel. Will that work? And if so... how do I do it?

  • great video

  • u forgot rising electricity prices :))

  • Do I understand correctly that with a grid tie panel you connect to the inverter directly without having to use a battery, but the other kind of cell charges a battery and the power you get is from the battery that has an inverter that you can plug into?

  • I want to be able to power a refrigerator and some lights like that one person said, every day. I know all stuff together is probably like 1000 watts or so, so what would I be looking at panel wise and how many batteries?

    12 volt deep cycle batteries I assume, and also what would be better, in series or parallel? Thanks.

  • I want to be able to power a refrigerator and some lights like that one person said, every day. I know all stuff together is probably like 1000 watts or so, so what would I be looking at panel wise and how many batteries?

    12 volt deep cycle batteries I assume, and also what would be better, in series or parallel? Thanks.

  • When solar panels get to 1$ a watt... this will be a HAPPY day for me :]

  • Dan, What would be better would be better mono or poly panels for Northern Minnesota. I am looking at sunforce 80 Watt panels. Let me know your opinion on these questiobs Please. Thanks for the help.... Jason

  • @GREENPOWERSCIENCE or dan i want to know im might buy one do i need any thing form my town because i not make that much power so i cant sell it but do i need anything form my town

  • Hey I have a 12v battery and based on what I've heard 6v golf cart batteries are the way to go I only have about 100 watts of solar but can I have 2 golf cart batteries 12v and 1 12v battery until the 12v dies then have only 6v batteries

  • You can get 100-150 watts worth of these cells for $80, but they are not the best

  • Nice Video Dan. It was interesting to see the voltage drop on the Monocrystalline due the shading of your hand.

  • I would like to be able to put solar panels in my apartment windows...do u think that would be possible???

  • 80 Watts x 5 Peak sun hours x 365 days in year x .75 system efficiency= 109.5 KWH a year. 109.5KWH x .15 cents a KWH=$16.42. Now the price of the panel is 250 so 250/16.42=15.2 years to pay the panel off, not including the inverter. By the way any inverter that you grid tie has to be UL listed as a interactive inverter which the one that is used is not. Plus this way of connecting to the grid is illegal, we have the NEC for a reason. All i have to say is just please be safe!

  • So best deal, make a 1000W panel, and get an 800W GTI? All bases covered?

  • Hello again Sir. I am still looking for a grid tie inverter. "to start with then will get the backup system later" I am sure I only need a small one, but what size? for a 1-1 apartment. If I get a 300W, would I need my panels to max out at that, or will it amplify the one that I am making? "i have the time and patience to put 36 cells together. lol saw your other clip" and is it pushing 300W per hour?

  • @cm4english For GTI you need about 20% more panel watts than the inverter rating. For a backup you can use any panel but your battery charging time will be determined by the battery Amp Hours, Current Charge, and the watt input from the panel.

    In regards to 300 watts? They would be watt hours if on for one hour.

  • @GREENPOWERSCIENCE Dan, I've watched all of your vids, when are you gonna show us the system that you use for your home? I'm shure with all this stuff your learning you have one up on the power company....Thanx Czarsolarhydrowind.

  • If a solar panel says 200 watts, how much watts can it produce per month? (I live in the Philippines)

  • how do i know if a pure sine inverter is a grid tie inverter?

  • @randywest6 Pure sine or modified sine inverters have 12v posts OUT and IN. Grid tie inverters have a female computer AC plug 3 prong hole out for a male out. And only one red black in. The usually say Grid Tie on them. NEVER hook a pregular inverter to the grid power, it will blow up.

  • am new to this idea. Kind of paranoid about the power going out here durring a storm..... If i were to hook up a solar panal, with a grid tie inveter to my appartment, "just hang it in the window" would that be enough to power the fridge, and a few lights? if so, are other apartments hooked up to mine and try to pull off my power? or would you think that a regular battery/inberter set up would be best for that?

  • @cm4english You would need a 1000 watt REGULAR pure sine inverter and 3 deep cycle batteries to run a fridge and a few lights for 5 hours. A GTI is no good for blackouts. They shut off. You could charge all 3 batteries in about 3 days with a smaller panel. That would be for backup only.

  • sorry clicked negative but wanted to click positive..... i apologize!

  • That seems like a lot of work and money to make or save 5 cents a day! :-)

  • 250$ at where?

  • thanks 4 this video, i was thinking bout maybe joining sum trainning classes, do u work doing this?

  • high Dan

    please look at my video on solar panels.

    just want to show you what happens to cells if they are not mounted to the glass properly just for you info or so if people ask you they get the proper info on building these things

    thanks

    dave

  • where did you get your grid inverter? thanks

  • oh yea i ment can i keep all of the panels at 12 volt with no battery bank

  • i wanted to hook up 12v 45 watt harbor frieght kit and 12 v 4 x 50 watt solar panels will that config work with a 300 watt grid tie inverter

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  • I would like to know what kind of panels are the most efficient.

  • mono or multi crystalline are the most effcient when they experience no shading thats why they perform better when wired in paralell. amorphous pannels work better when shaded in part but they loose huge out put when they get hot. I hope I answered your question. Great vid dan. CHEERS WINDY NC

  • @OBXSOLWIND Thank you.

  • is that a Siemens panel?

  • Dan,

    Another great video! Can you hook up two then three in parallel to the grid tie? I am curious to know what the "sweet spot" is with these plug-in type inverters.

    Thanks,

    Mike

  • GREAT VIDEO. Watched your other solar pnl videos. Just finished making my 4 pnl and using Grid tie Inverter to feed power back into my home. DIY cost is running 1/2 . Doubled my wattage with roating my last pnl with the SUN. Could not do it without your videos. THANKS.

  • those birds look so chaotic, like leaves blowing in the wind

  • Good video, solar is the way to go!

  • In two years NANO SOLAR will be available to the public

  • @DjGisME But it does make sense to generate your own power, just not to save the earth.

  • Where can i bay this Grid Tie Inverter In EU ?

  • The birds at the end, they saw your series panel and wanted to knock out a cell or two:-)

    I heard that bird poop on those panels can cause disproportionate voltage loses. Wow, do you think amorphous is a better choice?

  • Hey Dan, I went to Harbor Freight earlier in the week and looked at their 45 watt solar panels. They want $249.00 for them. You just said that this 80 watt panel is about $250.00. Would it not be better to get the 80 watt?

  • @okmoontan Yes, Harbor Freight System same price as a year ago, that in now 2x too expensive. You should pay $3 a watt or less now. SO the HF system should sell for $179.

    45x3=135 + 20 controller, 20 lights $175 would be a fair price.

  • Thanks for posting this video! Great info.

  • Cool demo. But your logic saying that you aren't losing any energy because the meters read the same is faulty. Even if you are losing energy, both meters will read the same. However you are still correct. If your cord is 18 gauge, you only have 1.5 ohms of resistance and a power loss of .4 watts.

  • I can assume this is because you're not pushing 63 watts into the house, you're letting it get pulled through. So the load would be the same.

  • Well think of a hose. If you have a kink, the water still flows into and out of the hose at the same rate.

  • Dan, 5 stars (*****) but can you do something about the audio? Not only on this video, but virtually all of them. You are about 28 to 34 db lower than the average video posts.

  • you used inncorrect grammer PSH sad...

  • ... although both terms are often used interchangeably. Only a very small portion of total power radiated from the sun reaches the Earth.... The average value of this constant (energy density of sunlight) is approximately 1361-1366 watts per square meter

    Don't you dare for one second try to tell me any cell is 100% efficient.

    As for costs... Are you pulling the information out of your ass, cause I can assure you, you are off by quite a bit.

  • Dan, I love your videos, however, this one kindof upset me. I just saw, first hand (no pun intended) how inefficient these cells are. Granted, they do work, but how long do you think it would take to recover all the energy used to make the system? (energy for refining copper, mining shipping, all that jazz)

    One viewer said 30 years for the cell to pay for itself. That sounds very unreasonable. Is this estimate true?

  • Obviously it will depend on the cost of grid power in your area, but for me (in Maine) energy costs are very high, so cost recovery will perhaps be faster than elsewhere... @25 yrs.

    However, I think this figure is overinflated. I based it on an quick online estimate I did last year to access the cost of going completely off grid---without any modifications to energy consumption. The system had a substantial buffer figured in (@30%+), included all inverters, & capacity for heat.

  • Come to think of it, the cost also included storage cells.

  • Sorry for missing this.

    Materials are a small impact. Consider one panel removes about 700 pounds of deposited coal ash and several tons of co2

    The goal $ to think about a car. When you buy one, most do not ask "when will it pay for itself." Consider 15¢ a kwh. Each $250 (80 watt panel) will produce about 1KWh on a good day.$4.00 a month $40 a year rounding down. 5 years to flat.

    If instant savings is the goal, consider Energy efficient appliances. They are the first step towards solar anyway.

  • @GREENPOWERSCIENCE over used life, also can be recycled.

  • Math is a little off as a 80 watt panel and assuming a inverter with 100% efficiency would have to run for over 12.5 hours to produce a single KiloWatthour of electricity. 1KWh equals 1000 Watthours, 1000 / 80 = 12.5 hours. Please correct me if I am wrong...

    Mike

  • @GREENPOWERSCIENCE why not buy 1 after the 2.5 year mark then halving the cost of the 2nd panel and effectively saving you 2.5 years?

    buy 4 and you effectively have them for free. large upfront but less time to pay off 4 panels = 4 years = all paid off.

  • I like that you don't need batteries!!

  • can't hear for shit....

  • Guess I missed something.

    What is the difference of a Grid-tie and a typical run your stuff , inverter?

  • I think they have electronics inside different. I read that reg inverters will blow up.

  • JulyInJuly - You are correct. The type of inverter required to push power into the grid is called a syncronous inverter. This type of inverter monitors and matches the sine wave produced to the sine wave of the grid. When they are in unison then power can be pushed into the grid otherwise a

    non-syncronous inverter will blow up can cause fire and other equipment i.e the solar panel or wind generator, etc can be damaged.

  • How long would it take to pay for it self?

  • @truckeejp 30 years

  • @andruha11234

    Not worth it....

  • What do you base your wisdom on? The panel cost $280 and he is putting what 63 watts back, power costs about 10 cents per Kilowatt, so thats less then a penny an hour, a hundred hours per dollar so maybe 30,000 hours to pay for the panel so about 3000 days at ten hours a day of sun if you are lucky. 8.2 years

  • 63 watts is 0.063 kilowatts... which means it takes 15.8 hours to make 1kilowatt which like you said is 10 cents.... do the rest of the math...

  • @andruha11234 it cant take 15.8 hours to make one kilowatt, because power is measured in energy per unit of time(watt=joules per second)

  • 5 years

  • hi dan! i had one of these inverters on my house with 250 watts of panels here in australia. everything was working great until the power company found out about it and made me remove them or get a serious fine. they said i have to buy there grid tie kit which is 1kw and costs $12500.

  • That sucks ass dude, how did they find out about it?

  • i was at work and nothing in the house was on and the meter was running backwards!

  • Nice

  • Time to move at least part of your house off grid.

  • It's a treat till one of them dumps on your solar panel/head.

  • Another great video Dan thanks! *****

  • Dan,was it my comp. or is the audio real weak in this vid.I like your vids.anyway!

  • what a waist whats the point of this i use 120 v not 12v

    such a useless piece of junk it doesn't even work when one cell is blocked

  • Great vid once again. Funny timing, I just put together a miniature version (4 solar cells) on top of a miniature house which ran a tiny fan (using a 75W bulb to act as a fake sun...it was snowing today) for a kids workshop we're running at our art center. I come home, turn on youTube and you've got a scaled up version. Nice. Anyway, thanks for your videos. DIY is the way to go!

  • Great vid.

    In 1993 I experimented with mono crystaline cells and found out that if you by mirror shine light on the back of the cells you could raise the output 30 - 50%

    If you by mirror double the area of sunlight

    hitting the front you also get a raise in output. I then also invented a kind of slot

    you coud stick the cell into for making assembly easier. However that kind of inventions were not "In" at that time.

  • I have heard that solar panels will soon make a major breakthrough in that they will be able to take power from ambient light.meaning they won't have to have direct , bright light and will even work on a cloudy day. Anybody know anything about this?

  • YES this is already the case.

  • Comment removed

  • Great video 5*

  • I have a friend that has a black angus farm. it takes 7 lbs of gain to add 1 pound of meat to his cattle.

  • Dan, your argumentation with no loose of power while measuring with two sense is false.

    The current you measure is the same in the whole circuit. Maybe you have some voltage loose thanks to the ohmic resistance of the wire, but i don't think that that is very big as the current is very tiny and your voltage quite high. (and i don't think that you device can measure that at all). Maybe you have a better performance when running only with one measurement tool.

  • @over2there the drop is over dramatized because the inverter requires 14v min. so the GTI cuts off when the loaded voltage drops below 14v. The amorphous panels do not drop as much with a similar test. Some panels have bypass diodes in cell groups. A loaded voltage in a test I did is 30% one cell blocked monocrystalline and 10% for the same area covered area of the amorphous panels.

  • @GREENPOWERSCIENCE awesome

  • Hey Dan - whaere do you get your grid tie invertors? I'm really interested in this but I'm in the UK. Really like your vids by the way :-)

  • Wow, $250 isn't bad for 80 watts. imagine how much money it would save in about 5 years..............

  • Let me calculate it for you: I use facts of Germany as i only now these:

    170 Euro / 20ct KwH you can buy 850 kwH. Please not that Germany has dam high energy prices.

    What you generate: I assume 4 hours day full sun: (optimistic standard for Germany winter/summer)

    60 Watts*4=0.24 wH/day. So you need to run this 3540 Days. This is 9.7 Years. By the way: After 20 Years a solar planel has a wattage lose of min. 20%.

  • @over2there 4 hours? with Germany winter/summer..........

    I could put these in my parking lot in mid summer & get full sun from 9am to 8pm.

  • Of course you have 12 hours of sunlight in average. But the peak voltage (in our case 60 Watts) is only delivered at peak time. Lets say at a sunny summerday at approx. 12 o'clock. But whats on sunrise in winter?

    There are some calculation tools that assume 3 hours peak wattage a day, some do 4. In more southern regions eg. africa my calculation is obviously not right as affrica has "stronger" sunlight.

  • @over2there

    Sounds good to me in many ways ! And the technology is still improving :-))

  • so you can just dump inverted ac and mix it with grid power no problems. if you have any info how this works i would love to know. im working on just making my room solar not my whole apartment.

  • They're wired in series and have high impedance. dependent on non partial exposure to generate.

  • try getting a solar cell and use your lenses to focus on it and use water to cool it but only ones that are made of all metal

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