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Other Stuff Thread, Staffordshire Sainsbury's to be powered by food waste in Fun Stuff; Originally Posted by pcstru Define "works"! I very much doubt any PV cell will show any voltage into a load ...
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    unixman_again's Avatar
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    Quote Originally Posted by pcstru View Post
    Define "works"! I very much doubt any PV cell will show any voltage into a load under moonlight. There is only about a thousandth of a watt per m^2 with a full moon. You might be able to use one to measure how much light there is, but saying it "works" as a PV panel would be a huge stretch.
    The meter says power is being returned to the grid. When you turn the lights on, it says she is drawing power from the grid.

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    @nephilim - OK, so you are getting 80% of their rated output, that makes sense. BTW you might be interested in the Open Energy monitor project. I'm in the process of building a system after a bit of a shocking bill.

    Quote Originally Posted by unixman_again View Post
    The meter says power is being returned to the grid. When you turn the lights on, it says she is drawing power from the grid.
    If the meter says she is returning power to the grid on a moonlight night, either the meter is wrong or she doesn't understand what it is telling her. It could for instance be the system allowing any battery capacity to bleed off to the grid, so that come morning, they can be topped up by the sun. She is not generating any power from the light of the moon - that is absolutely certain!

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    I'll just leave this here.

    back-to-the-future-fuel.jpg

    JB.

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    Quote Originally Posted by clareq View Post
    It's self perpetuating - they fail to produce enough waste food, the power goes off, the freezers go off - hey waste food...
    Then they could fire up the gennies again

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