ajay asked in EnvironmentGreen Living · 1 decade ago

which is most cheapest and efficient solar panel to generate electricity?

I am looking to purchase very good solar panel to generate electricity, please tell me about the best and cheapest and where it is available to buy including the accessories to light and run the electric heater or stove and a refrigerator.

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  • fred
    Lv 6
    1 decade ago
    Favorite Answer

    Best/most efficient and cheapest are never the same.

    cheap means making compromises on performance, reliability etc.

    Using electric for heating is very wastefull, and nothing short of an industrial sized photovoltaic instalation will be able to deliver the power reqiured for a typical 2-3kW electric heater or stove. 6m2 of most efficient/expensive pv would produce enough for a hairdryer in good conditions. plus most heating demand is at night, so large battery needed. Better to use solar thermal design and heat stores.

    Even a fridge/heat pump has high start up currents that would need careful design and a large battery to deliver.

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  • 1 decade ago

    Sorry if I don't have all the specifics you asked for,

    but Sun Power makes the most efficient solar panels on the market, at close to 20% efficiency. They have made cells with up to 25% efficiency in the lab.

    That doesn't make it the cheapest but means the most watts per square foot.

    Thin film panels are cheaper to make but not as efficient. They are about half as efficient as conventional silicon panels.

    First Solar makes the cheapest per watt right now. So I guess that makes them the actuall cheapest manufacturer.

    They are able to make them cheap enough to beat out the conventional silicon panels on a per watt basis, despite being less efficient.

    A company called NanoSolar has the price down close to First Solar's price. These are manufacturers. But they do installations and build utility and commercial scale projects.

    NanoSolar is less far along in commercialization. They have products, but probably need to wait for the stock market to be more favorable for IPOs, so they can go public and raise the money to move up to scale. The other two are already public.

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  • 1 decade ago

    You will need to shop around for the cheapest - they are coming down in price - chck the cost per watt of output.

    More efficient panels will mean that a panel of a certain output may be a little smaller. This is unlikely to be as important as price, unless you have restricted space for mouning them.

    Multijunction cells are the mosteffient, but due to their cost, they tend to only be used in situations such as on satellites, where size and weight is more important than cost.

    Solar panel efficiency can also be improved by using the more sofisticated MPPT type of charge controller, which keeps the panels at their most efficient voltage.

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  • 1 decade ago

    the amorphous silicon thin film solar pv modules could be:

    Advantage 1 : Accumulated more power

    Lower temperature coefficient and better absorption to non-direct and weak light make amorphous silicon solar panel have accumulated more power generation in a certain period of time। The difference of power generation between Amorphous silicon and crystalline silicon solar panel will be larger in high temperature and overcast condition। Amorphous silicon Solar panel relatively outperforms the other technologies at high insolations because it is less sensitive to the higher temperatures found under intense lighting conditions। Amorphous silicon also have better spectral response to the wavelengths of overcast condition ,so it also outperforms others under this kind of low insolation conditions।

    Advantage 2 : Low manufacturing cost

    Fewer Sinicon usage and no limit material make amorphous silicon thin film solar panel have lower material cost. It is suitable to manufacture in large panel also further cut the manufacturing and material cost.

    Advantage 3 : Shorter energy payback time

    Energy pay back time means the time of the energy the solar panel produce to cover the energy it use to manufacture the solar panel. Solar panels, like every. Other product, do need energy for manufacturing. But solar panel pay back this energy input within1 to 3 years, depending on its type and location. During its expected lifetime of 30 years, the solar panel produces therefore 10 to 30 times the energy it originally consumed. In the figure below,Thin film solar panel have shorter energy pay back time compared to crystalline solar panel.

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  • Anonymous
    1 decade ago

    If your are handy, you can build one yourself for under 200 dollars. You just need the information on how to start and what materials you will need. There are many ebooks on this subject, the one I found to be the best is earth4energy.

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  • 3 years ago

    1

    Source(s): Build Solar Power Easily - http://Solar.eudko.com/?fQi
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  • Anonymous
    1 decade ago

    I've found http://renewenergysources.blogspot.com/ is a great blog with some links to ways to use solar energy in your home.

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  • Anonymous
    1 decade ago

    This is a very cheap around the house solution:

    http://www.maplin.co.uk/?C=AffilWin90654&T=_124781

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  • 1 decade ago

    Why not wait for this off the grid generator.

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