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Thread: Feeding electricity back to the grid?

  1. #1

    Default Feeding electricity back to the grid?

    I heard someone mention that Cape Town municipality is trying to get this right.

    Does anyone have any info?

    I'd be really interested in putting up some solar panels etc. If I could basically use the grid for storage. I.e. run my excess power during the day back to the grid (store some in batteries as well), then buy it back at night when I need it more.

  2. #2

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    Its not a matter of "getting it right"...the tech has been 100% for years.

    SA legislation doesn't currently allow it, but they are planning on changing that.

    Oh and don't try to DIY this...its dangerous for the line techs.

  3. #3
    Grandmaster
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    Sounds ideal.. can this be run in a battery-less environment? My understanding is that the batteries are the Achilles heel of green power - $$$ too.

  4. #4

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    Quote Originally Posted by carudden View Post
    Sounds ideal.. can this be run in a battery-less environment? My understanding is that the batteries are the Achilles heel of green power - $$$ too.
    I'd still want batteries to give me some kind of buffer when there is a power failure / load shedding etc, but it would make the whole exercise a lot more appealing.

    @Havoc - I know it's technically possible, but are you saying the substations and everything are already kitted out to handle it? What about the metering side of things?

  5. #5
    Grandmaster
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    Quote Originally Posted by rsd View Post
    What about the metering side of things?
    The numbers on the prepaid meter count upwards? That would be a sight to behold!

  6. #6

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    Quote Originally Posted by HavocXphere View Post
    Its not a matter of "getting it right"...the tech has been 100% for years.

    SA legislation doesn't currently allow it, but they are planning on changing that.

    Oh and don't try to DIY this...its dangerous for the line techs.
    I know of two people that do this already...but they might be doing it through their company's name rather than their personal capacity.
    "You can't get rid of poverty by giving people money."

  7. #7

    Default

    Quote Originally Posted by rsd View Post
    @Havoc - I know it's technically possible, but are you saying the substations and everything are already kitted out to handle it? What about the metering side of things?
    Let me try that again. It is illegal at the moment. The gov is planning to change that but they are not exactly moving with blinding speed on that front.

  8. #8

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    Quote Originally Posted by Venom Rush View Post
    I know of two people that do this already...but they might be doing it through their company's name rather than their personal capacity.
    Some of the mines are already feeding back into the grid afaik, but that under once-off special agreement with Eskom. The legal framework for households feeding back into the grid isn't there yet.

  9. #9

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    Quote Originally Posted by carudden View Post
    The numbers on the prepaid meter count upwards? That would be a sight to behold!
    Apparently it can be done DIY with older meters and you can indeed watch them run backwards!

    Sounds like a bad idea though from what Havoc says.

  10. #10

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    Quote Originally Posted by HavocXphere View Post
    Let me try that again. It is illegal at the moment. The gov is planning to change that but they are not exactly moving with blinding speed on that front.
    I get the illegal part, I'm but let me try again too:
    are you saying the substations and everything are already kitted out to handle it? What about the metering side of things?

  11. #11

    Default

    Let me try that again. It is illegal at the moment. The gov is planning to change that but they are not exactly moving with blinding speed on that front.
    Do you have some reading on the matter? I would like to familiarize myself with the law in this regard.

    There are a lot of urban myths going about regarding "feeding" Eskom, I just want to know for 100% what is what regarding legislation.

    "The fool hath said in his heart, There is no God."

  12. #12

    Default

    Quote Originally Posted by HavocXphere View Post
    Some of the mines are already feeding back into the grid afaik, but that under once-off special agreement with Eskom. The legal framework for households feeding back into the grid isn't there yet.
    Ok, well I'll have to find out more from one of the guys doing it as he's feeding back into the grid from his house in Rondebosch, Cape Town.
    "You can't get rid of poverty by giving people money."

  13. #13

    Default

    Quote Originally Posted by rsd View Post
    let me try again too:


    The substations don't need any extra mods afaik. The gear to sync it with the grid gets installed into the house itself. That what they do in Europe...not sure whether that would work so well with our SA mentality.

    http://www.treevolution.co.za/2008/0...-being-tested/
    http://www.nelsonmandelabay.gov.za/C...aspx?objID=369

  14. #14

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    Quote Originally Posted by Venom Rush View Post
    Ok, well I'll have to find out more from one of the guys doing it as he's feeding back into the grid from his house in [redacted].
    Wow, great friend you are

    Might want to edit the location out considering it is illegal.

  15. #15

    Default

    Quote Originally Posted by HavocXphere View Post


    The substations don't need any extra mods afaik. The gear to sync it with the grid gets installed into the house itself. That what they do in Europe...not sure whether that would work so well with our SA mentality.

    http://www.treevolution.co.za/2008/0...-being-tested/
    http://www.nelsonmandelabay.gov.za/C...aspx?objID=369
    Cool stuff, thanks for the links

    I really hope it gets going soon, will make solar panels etc much more viable for me.

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