Introduction to Solar Photovoltaics


A short introduction to Solar Photovoltaic energy generation

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  1. #1 by robz40 at January 28th, 2010

    @mikecccc987 It might be surprising but PV is uneconomical even if the PV modules on the roof are free. Why? Because they constitute about 1/2 of the total cost of a PV system.

  2. #2 by djbrian24 at January 31st, 2010

    @robz40 PV allows you to generate clean electricty which you sell back to the power company for “store credit.” With the 30% uncapped federal tax credit, state rebates, and low financing options, payback can be as low as 7 years. What’s the payback on your car? PV is one thing you can actually buy that adds value, pays back, and helps the environment. Most PV manfacturers offer a 25 year warranty, when in fact solar will produce electricity for you for 35-40 years. It just makes sense.

  3. #3 by robz40 at January 31st, 2010

    If it makes sense you are welcome to install them but remember: subsidies distort the real market and pass the costs on someone else and I can provide you with real data where PV became obsolete after 9 years. Warranties are only worth the duration of the company that can honour them.

  4. #4 by robz40 at January 31st, 2010

    google
    bankrupt photovoltaic
    ther are a few companies on the search result

  5. #5 by djbrian24 at January 31st, 2010

    You’re exactly right, but tax incentives are a way of life. Why should my federal tax dollars pay for a TSA employee at an airport in Idaho when I live in Alabama? The previous solar slump is a thing of the past. As we continue our dependence on foreign energy, rather than capitalize on a huge opportunity to become the leading exporting nation of solar and other forms of alternative energy, we’ll continue to slip further into debt and become vulnerable to attacks, in more ways than one.

  6. #6 by robz40 at February 1st, 2010

    You a few good points but the subject is rather vast to be discussed just with a few lines but keep this in mind. Solar and wind energy are unreliable therefore they need the grid and conventional or nuclear power anyway to back them up. These renewables DO NOT add power to the system, they only save a bit of fuel.
    For example 40-60bln$ on PV lasting 30 years (and they don’t) only allow to save 30×0.01x7bln=2bln$ in nuke fuel + installing the nuke power station anyway. 40-2=38=bad deal

  7. #7 by robz40 at February 1st, 2010

    If you have the chance have a look at the book “The Solar Fraud” Why Solar Energy Won’t Run The World by Howard C Hayden. It is an interesting read but a bit difficult to find. Any public library should be able to get it though.

  8. #8 by henrykay01 at April 6th, 2010

    I invented a breakthrough source of energy that contradicts the law of conservation of energy. I have a PROOF that there are electrodynamic phenomena that contradict the law of conservation of energy. I am looking for $6M for a prototype and patents.
    H. Tomasz Grzybowski
    tel. +48-512-933-540

  9. #9 by MrEnergyCzar at April 6th, 2010

    Great video…I converted my home to a net-zero solar powered home that uses no oil or gas…I made a video about it called, “Preparing for Peak Oil”….

  10. #10 by Sinncrow at April 9th, 2010

    Really good video

  11. #11 by pacificcresttrans at April 28th, 2010

    In the past 20 years, the demand for solar energy for domestic energy purposes has grown by up to 25% per year. With energy costs constantly increasing, governments are looking to solar energy as a more viable option to meet a growing need for energy. Pacific Crest Transformers has more information on this. You can also read whitepapers and articles on alternate energy at the Pacific Crest Transformers website

  12. #12 by altagolfer at April 28th, 2010

    My question is – what if a hail storm were to damage the panels? Who would replace them, and at who’s expense?

  13. #13 by pc4nae at June 16th, 2010

    Every hour enough energy reaches the earth for to meet the need for one year?
    Yet in a video titled “How Photovoltaic Solar Cells Work”, they state every minute enough energy reaches earth to meet the need for one year. So which is it, you can’t both be right. Maybe neither of you are right? I don’t know who to believe these days….maybe I’ll just make up my own reality…

  14. #14 by youtubasoarus at June 18th, 2010

    @moviedude22 — The problem is profit and conflicting interests in what is profitable. If everyone was using solar power from the sun, nobody would pay energy companies, who make billions, if not trillions of dollars per year.

  15. #15 by henrykay01 at July 4th, 2010

    I invented a breakthrough energy source which violates the law of energy conservation. I have a PROOF that there are electrodynamic phenomena violating the law of energy conservation. I am looking for $30000 for a prototype and for $3M for patents. In mass production it will cost $1200 to make a 15 kW generator, value of energy produced YEARLY about $10000.
    H. Tomasz Grzybowski
    tel. +48-512-933-540

  16. #16 by dzgfdg at July 16th, 2010

    @pc4nae thats propaganda to u

  17. #17 by dzgfdg at July 16th, 2010

    PV is a waste of money, idiots think they are going green. concentrated solar power is the best alternative, but still not reliable

  18. #18 by windymac at July 23rd, 2010

    dzgfdg – You need to educate yourself before authorising on a subject. First read about feed in tariffs. Now get your calculator out. Deduct 12,500 from 25 x 850. That’s how much the householder with a 2.4kw system will make on the feed-in tariffs. Now you need to add to that the 20-40% saving on their electricity bills (that’s indefiniteiy by the way.) Add the fact that the value of their property increases by the cost of the installation. There are some idiots here and you’re one of them.

  19. #19 by pc4nae at August 5th, 2010

    @dzgfdg Yes, i believe you are correct….

  20. #20 by henrykay01 at August 8th, 2010

    I invented a breakthrough source of energy, which contradicts the law of conservation of energy. I have a PROOF that there are electrodynamic phenomena which contradict the law of energy conservation. It will cost about $1200 to make a 6 kW generator in mass production. Value of the energy produced yearly about $5400. I am looking for $300 000 for a prototype and for $3M for patents.
    H. Tomasz Grzybowski
    tel. +48-512-933-540

  21. #21 by Tanarus20 at August 28th, 2010

    @youtubasoarus Ohhh trust me. thay’ll find a way to tax the snot out solar power. It’s what Governments do.

  22. #22 by kricotas at September 10th, 2010

    @windymac
    hi!
    question? i have bought 85 watts solar panel
    im trying to intend to buy slowly solar panels i dont have that much money
    i di buy sunforce charger Cont, ineverter 1500
    18 bateries
    how many solar panels i sould stil buy?
    thank you

  23. #23 by kricotas at September 10th, 2010

    @windymac
    how is the calculations?

  24. #24 by UKSlimming at September 11th, 2010

    @kricotas Hi Kricotas. I’m not familiar with the products you have but if your inverter is rated 1.5kW then you could go to about 20 x 85W solar modules (panels.) The suitability of your batteries depends on their collective capacity rather than their number.

  25. #25 by kricotas at September 11th, 2010

    i did mesure with multimeter rates at
    20.8 v !

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