Interesting Power cuts and solar panels

Discussion in 'Coffee Shop' started by Minkey, Aug 12, 2019 at 10:15 AM.

  1. Minkey

    Minkey Ok it was me Club Sponsor

    Can someone explain, if you have solar panels and they are generating electricity, how come on Saturday when the when the sun was out and there was a power cut I had no electricity? I would have thought the panels should have provided some electricity:nusenuse:
  2. johnboy

    johnboy rather fond of a cream bun Club Sponsor

    Yup, mine are the same. Guess it's the way they are wired up, if you had battery backup and were semi off grid then you would not have been affected.
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  3. Stevebrooke

    Stevebrooke Knee up, wheel down Club Sponsor

    I’ve recently looked into battery storage and it seems you need an “island” battery to make use of panels during a power cut. There are only 2 on the market at the moment according to my research.
  4. slim63

    slim63 Never surrender Club Sponsor

    A mate of mine lived off grid for about 10 years, he had solar panels & his batteries were from a submarine, picked up for not a lot through a military disposal company, probably not the sort of thing you want a stack of around the house unless you can hide them away but it shows there could be options available
  5. Oldandbald

    Oldandbald Been there, and had one Club Sponsor

    Not absolutely sure but I think solar panels generate direct current which will charge a battery no problem. But your household appliances will require alternating current to operate. Which is why you had a power cut like the rest of us. Don't you just love renewable energy.
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  6. Malone

    Malone Old Hand Club Sponsor

    My solar panels in the motorhome, 220w @ 24v approx, will charge 4 x 90ah x 12v leisure batteries, and then I can use an inverter to turn it into 240v ac. It should be equally feasible to do something similar in a house - if you have the money!
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  7. Minkey

    Minkey Ok it was me Club Sponsor

    I can understand that but as since I've used 1/2 the amount of electricity a month than I used to I'm confused :rolleyes:
  8. Stevebrooke

    Stevebrooke Knee up, wheel down Club Sponsor

    According to an electrician mate of mine the electricity generated is converted to AC and fed into the grid at the meter. Your house takes that electricity and uses it while it’s being generated. If you have a battery it contains an inverter to change it back to DC for storage but if you then want to use it to power the house during the night it also needs another inverter to change it back to AC. That is what an “island” battery does.

    There you are - clear as mud.
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  9. Centaur

    Centaur Site Pedant Club Sponsor

    Just to clarify a little. An invertor converts DC to AC and a rectifier changes AC to DC. See; simples. :D
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  10. andyBeaker

    andyBeaker Moderator Staff Member Moderator Club Sponsor

    I am confused.

    Where does the band called DC/AC fit in?
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  11. Centaur

    Centaur Site Pedant Club Sponsor

    They are complex convertors. Listen to them and you are converted into a fan. Very handy in hot weather. :D
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