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Green Building Bible, Fourth Edition
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Renewable Energy: Solar PV RIP

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31 to 48 of 48

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      CommentAuthorDamonHD
    • CommentTimeOct 14th 2018
     
    Rebound defence: I carefully compute my gross consumption backing out the effects of my PV, which helps keep me on the straight and narrow!

    Xbox: well, such a thing may be about to land in our household but my main stipulation was to pick something that is not too energy hungry and to turn it off when it's not being used... We'll see how far that gets us...

    Also on the horizon, my elder child is about to become officially teenage. Not yet clear what will happen to energy and water use. B^>

    Rgds

    Damon
  2.  
    G83 notification is still a pre existing legal requirement, but Damon put it nicely that "there is even less reason to insist on expensive paperwork for solar systems if safety can be maintained".

    The G83 notification is an enforcement to make sure the installation uses appropriate hardware, properly installed and tested. For every other part of the electrics installation, this is enforced by Building Regs/Stds via Part P and the DNO doesn't get involved, so maybe govt could combine G83 into that?
    •  
      CommentAuthorDamonHD
    • CommentTimeOct 14th 2018
     
    Hmm, folding sub-16A-per-phase into building regs seems like a very sensible idea, though the DNOs would not be happy. Also added to my piece, thank you!

    Damon
    •  
      CommentAuthorfostertom
    • CommentTimeOct 14th 2018 edited
     
    Yes v gd Damon. Widespread mini-generation is next significant step, at the consumer side of things.

    Many sources envisage just such set-ups, similar price and as common as modest mobile phone, for everyone - as you say, in a student's window. And increasingly elaborated to larger installations (within limits) from there.

    Posted By: jamesingramwhat ever generated the power would have to be design well to cover it's embodied energy etc as it would be such a small producer over its life
    Quite - and the mass-enabler which those 'many sources envisage' is the coming generation of cheap non-silicon PVs - organic, thin film, paint-on etc, which have tiny embodied energy by comparison.
    •  
      CommentAuthordjh
    • CommentTimeOct 14th 2018
     
    Posted By: DamonHDHmm, folding sub-16A-per-phase into building regs seems like a very sensible idea, though the DNOs would not be happy.

    Does not G83 at least make sure the DNO is aware of how much generation capacity there is in a locality? That seems like important information for their planning.
    •  
      CommentAuthorDamonHD
    • CommentTimeOct 14th 2018
     
    It is, but these days DNOs can probably quickly infer that from monitoring, as they can infer actual real-time demand rather than just counting meters.

    G83-lite should involve generation much more quick to turn off if it detects problems such as high voltage or frequency, and therefore more likely to be a help to the DNO than a problem.

    Rgds

    Damon
  7.  
    I dunno, but I doubt the DNOs can currently plan anything to within a tolerance of +-16A.

    They must receive many G83s from people who apply for an export connection, but use a diverter to avoid exporting. But they get no notification if someone installs a 40A cooker/shower/EVcharger/etc. So I'm sure they wouldn't miss receiving the G83 paperwork, particularly if they got the smart meter data instead.
    • CommentAuthorTriassic
    • CommentTimeNov 1st 2018
     
    I’m fitting solar panels on my new build roof because they are cheaper than slates!
  9.  
    Now that the tipping point ☺
    •  
      CommentAuthorfostertom
    • CommentTimeNov 1st 2018
     
    That's panels equiped to form the roof covering? They've always been considerably premium-price. Which brand?
    So now we don't even have to say 'offsets the cost of roof covering' - now actually cheaper!
    • CommentAuthordickster
    • CommentTimeNov 1st 2018
     
    Just ordered 2.3 kWh (7 x 330W Sunpower panels) and a Powerwall 2.

    Blimey!
    • CommentAuthorJamster
    • CommentTimeNov 1st 2018 edited
     
    This is all very interesting again - is there milage in an ongoing a sticky "Our adventures in solar PV" or similar thread where we can all pitch in our experiences over time?

    There are two posts in the last few hours that show things are changing - 1 is that panels are cheaper than slates and secondly that personalised storage seems to be of interest to more and more people.

    Vic-Eco is thinking about putting panels on without the FIT, Damon has storage and lots of monitoring on the relationship between generation, storage and base-load usage...

    Just thinking!
    • CommentAuthorowlman
    • CommentTimeNov 1st 2018 edited
     
    Posted By: dicksterJust ordered 2.3 kWh (7 x 330W Sunpower panels) and a Powerwall 2.

    Blimey!


    Is that "Blimey!"........... what the hell was I thinking, and how can I pay for this kit?

    or;

    "Blimey!"............ what a nice surprise, and I may even buy more?
    :bigsmile::wink:
  14.  
    Tom , check out systems such as GSE intergrated mounting, using standard panels
    very approx youd be looking a £150 per panel and tray so
    1.6m2 = £93 m2
    Good slates probably £25m2 for Spainish
    •  
      CommentAuthorfostertom
    • CommentTimeNov 1st 2018 edited
     
    So we return to saying "the £93/m2 cost of integrated panels is offset by £25 > £68/m2".
    But would non integrated panels have cost less than that £68 (plus slates under @ £25)?
    Triassic?

    The initial pich for https://www.tesla.com/en_GB/solarroof was that these solar tiles would cost less than dumb tiles - so a no-brainer to use them.
    Is that still the idea? No mention of it on this UK website.
    • CommentAuthorjamesingram
    • CommentTimeNov 1st 2018 edited
     
    very roughly panels are £100 , intergrated tray system £50
    Per 1.6m2 panel
    • CommentAuthordickster
    • CommentTimeNov 1st 2018
     
    That's Blimey! as in, made our minds up, have the money sitting in bank not doing anything (care of dead nice person).

    Blimey!, if we think too long about it, we'll never do it 'cause it makes no financial sense.

    Blimey!, we ought to do it 'cause it looks as if we're all doomed if we don't.

    Blimey! Don't do this sort of thing very often.
    • CommentAuthorowlman
    • CommentTimeNov 1st 2018
     
    Blimey! you have given it some thought.

    :cool:

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