Renewables: "talking 'bout my generation"

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  • Martyn1981
    Martyn1981 Posts: 15,231 Forumite
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    Once comment on having East-West facing panels - at this time of year, even on a sunny day like yesterday, the total generation for the whole day was less than 2kWh for a 3.8kwp system. I think the same panels facing south would generate much more than this, but I may be wrong.

    Hello and welcome Msrc(ab) ....... not sure if that maths formula will work, and now I've typed this, I realise it failed to save any time. Oh well!

    I, we, it ..... have an E/W system, and yes you're right, total summer specialist. My ESE has a ratio of about 7:1 (June v's December), and the WNW is about 11:1.

    For a south system, steep panels work better in the winter, and shallow panels better in the summer, but overall total generation isn't much different. But for E/W, you really want shallower panels that make the most of the high summer sun, as they won't see much of the winter sun, even if they are steep.

    Just got to grin and bear it and look forward to the clocks changing, as BST marks the better months for off south panels. And your West panel generation will suddenly jump past tea time. :D

    Mart.
    Mart. Cardiff. 8.72 kWp PV systems (2.12 SSW 4.6 ESE & 2.0 WNW). 20kWh battery storage. Two A2A units for cleaner heating. Two BEV's for cleaner driving.

    For general PV advice please see the PV FAQ thread on the Green & Ethical Board.
  • Martyn1981
    Martyn1981 Posts: 15,231 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    I've had a good look in the Bible but couldn't find that verse.

    "For the love of money is a root of all kinds of evil."

    Mart (Devout atheist, with an O'level in Divinity, go figure?)
    Mart. Cardiff. 8.72 kWp PV systems (2.12 SSW 4.6 ESE & 2.0 WNW). 20kWh battery storage. Two A2A units for cleaner heating. Two BEV's for cleaner driving.

    For general PV advice please see the PV FAQ thread on the Green & Ethical Board.
  • Oscargrouch
    Oscargrouch Posts: 4,393 Forumite
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    InVestor wrote: »
    I feel fine, why wouldn't I? I'm earning considerably more than you from my system. :D

    I'm curious though..

    Why do you keep trying pathetic, childish digs?

    :D
    I am retiring from any further rhetoric with you due to respect for this thread, have a nice life.....:)
    2.5 kWp PV system, SSW facing, 45 Deg Roof. ABB Inverter, Monitor: 'Wattson'.
    Reg. for FIT Nov 2011. "It's not what you generate; it's how you use it that matters". One very clean Vauxhall Diesel Sri, £30.00 Road Tax: B)

    Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).
  • edwink
    edwink Posts: 3,001 Forumite
    Part of the Furniture 1,000 Posts Homepage Hero Photogenic
    InVestor wrote: »
    Wow, I dare to point out the 'O' is meaningless to compare different systems and:

    oscargrouch keeps trying to make pathetic, childish little digs at me

    all my thanks dry up :(

    :D


    big-tears.gif 'O' dear!!!!!
    *3.36 kWp solar panel system,10 x Ultima & 4 x Panasonic solar panels, Solaredge Inverter *Biomass boiler stove for cooking, hot water & heating *2000ltr Rainwater harvesting system for loo flushing *Hybrid Toyota Auris car *RIP Pingu, Hoppy, Ginger & Biscuit *Hens & Ducks* chat thread. http://forums.moneysavingexpert.com/showthread.php?t=5282209
  • Martyn1981 wrote: »
    Any chance of some relaxing, simple, silliness now?

    Mart.

    Yes.

    I believe I've found one of InVestor's video clips on YouTube.

    http://www.youtube.com/watch?v=U8Kum8OUTuk

    Tee hee hee.
  • I am retiring from any further rhetoric with you due to respect for this thread, have a nice life.....:)

    :D

    Aw, you were trying so hard too....
  • edwink
    edwink Posts: 3,001 Forumite
    Part of the Furniture 1,000 Posts Homepage Hero Photogenic
    Martyn1981 wrote: »

    Can I say, this used to be such a silly and friendly thread.

    Any chance of some relaxing, simple, silliness now?

    Mart.



    Well said Mart!!!!!
    *3.36 kWp solar panel system,10 x Ultima & 4 x Panasonic solar panels, Solaredge Inverter *Biomass boiler stove for cooking, hot water & heating *2000ltr Rainwater harvesting system for loo flushing *Hybrid Toyota Auris car *RIP Pingu, Hoppy, Ginger & Biscuit *Hens & Ducks* chat thread. http://forums.moneysavingexpert.com/showthread.php?t=5282209
  • Yes.

    I believe I've found one of InVestor's video clips on YouTube.

    http://www.youtube.com/watch?v=U8Kum8OUTuk

    Tee hee hee.

    Haha, you make yourself look stupid trying to make me look stupid and this is your feeble response? :D
  • Martyn1981 wrote: »
    Only 1.8kWh today (third of an O), and the WNW did half of that.

    Wild and wicked weather. Had to take a different route for the morning walk as part of the path (near the main S Wales railway line) was under about 1 foot of water, following a very high tide. Wondered if the bods walking the rail line, were checking for flood damage. Turns out they were there to give manual signals to the trains to get the line between Cardiff and Newport operational again.

    Can I say, this used to be such a silly and friendly thread.

    For those that want to complain about discussing generation, wouldn't it just be easier to ignore the thread.

    For those that want to compare generation between their systems or systems anywhere in the world, carry on using kWh/kWp ('Os').

    For those not sure how kWh/kWp (Os) can be compared, quick lesson, the system with the bigger number did better (proportionately) than the system with the smaller number during the given time period. Simples.

    Any chance of some relaxing, simple, silliness now?

    Mart.

    comparison yes, meaningful comparison regarding this thread, no.

    Why didn't you respond to my previous post?
    InVestor wrote: »
    You're missing the point..

    For example a 4 kW system in the North of England generates 10 kWh on a sunny day there, the same day down South a 4 kW system only generates 1 kW due to fog or cloud or whatever.

    What meaningful comparison is there? Other than a bit of fun, hey I beat your system..

    The 'O' is pointless.
  • Martyn1981
    Martyn1981 Posts: 15,231 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    InVestor wrote: »
    comparison yes, meaningful comparison regarding this thread, no.

    Why didn't you respond to my previous post?
    InVestor wrote: »
    You're missing the point..

    For example a 4 kW system in the North of England generates 10 kWh on a sunny day there, the same day down South a 4 kW system only generates 1 kW due to fog or cloud or whatever.

    What meaningful comparison is there? Other than a bit of fun, hey I beat your system..

    The 'O' is pointless.

    The three primary reasons why I didn't respond were:

    1. The comparison (for me) is as clear as day, whether you are looking at it through northern English sunshine, or southern English fog, it's 10:1. Pointing out this utterly obvious fact, seemed unnecessary.

    2. It appeared to be a trap, as both systems are of the same size, and since there wasn't a third and differing system (eg 3.92kWp), the comparison can be done directly from the generation figures, without first accounting for the system size.

    3. And the main reason I didn't respond, is that you used two different measures, the first system you reported in energy (kWh), the second you reported in power (kW). So they are not actually comparable as we don't know what the second system generated. This may have been a mistake, or it may also have been a trap (I suspect a trap, since you didn't correct for it in the re-posting), either way, it seemed best to ignore.

    If you want to use kWh's, then use them. If you want to use kWh/kWp, then use them. If you want to compare generation (or not) then do (or don't). If you don't want to discuss generation, then fine. But why keep telling us that you don't want to discuss or compare generation, on a thread called 'talking bout my generation'?

    Oh yes, and also, something that I've not mentioned before as it might have just encouraged you to go on even longer. Your 'compare the money' argument is laughable. The amount of income means nothing without first taking account of the amount of money spent/invested in the system, so in reality you should be reporting £'s earned/£'s invested ......... not dissimilar to kWh/kWp (energy earned/system size investment) ........ when you think about it.

    Mart.
    Mart. Cardiff. 8.72 kWp PV systems (2.12 SSW 4.6 ESE & 2.0 WNW). 20kWh battery storage. Two A2A units for cleaner heating. Two BEV's for cleaner driving.

    For general PV advice please see the PV FAQ thread on the Green & Ethical Board.
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