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Renewables: "talking 'bout my generation"

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  • Oscargrouch
    Oscargrouch Posts: 4,393 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    5.08 O's not too bad eh Shafeeq ? smiley-laughing021.gif
    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).
  • Oscargrouch
    Oscargrouch Posts: 4,393 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    Wh05apk wrote: »
    Now it makes sense, I am getting 4kw panels but a 3.68kw invertor, do I divide by 4 or 3.68?
    * post already answered * but further comment ......

    The other advantage is that even if the system size is not visible from a poster, you can always, instantly see which systems, irrevelant to their size is performing better; for example:- I think the largest UK PV on roof insallation in the UK is 600 kWp (makes my 2.5 fall into insignificance) but if they posted today that they had generated 2,500 kWh, I could quite confidently post 'beat you' in O's. You do have to accept that geography and weather conditions come into the equation, but are not accounted for.....but then they aren't when you post in kWh either. So there you have it......:rotfl:
    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).
  • InVestor_2
    InVestor_2 Posts: 270 Forumite
    * post already answered * but further comment ......

    The other advantage is that even if the system size is not visible from a poster, you can always, instantly see which systems, irrevelant to their size is performing better; for example:- I think the largest UK PV on roof insallation in the UK is 600 kWp (makes my 2.5 fall into insignificance) but if they posted today that they had generated 2,500 kWh, I could quite confidently post 'beat you' in O's. You do have to accept that geography and weather conditions come into the equation, but are not accounted for.....but then they aren't when you post in kWh either. So there you have it......:rotfl:

    As discussed before, the 'O' is not a good way to compare 'efficiency' of different systems. Without taking into account roof pitch, roof direction, time of year, local weather, location it is impossible to say one system is more efficient than another.

    The thread is about generation which is kWh, but no harm in quoting 'O's as long as people are aware that it is not a useful unit in comparisons.
  • According to the CurrentCost/OptiSmart Monitor...

    14kWh yesterday
    100kWh in the last 7 days
    400kWh in the last 30 days [* was not working for the whole month]

    With still a few days to go before the end of the month my April target of 356kWh has been booted out the window :D

    Cheers
  • John_Pierpoint
    John_Pierpoint Posts: 8,401 Forumite
    Part of the Furniture 1,000 Posts
    Wh05apk wrote: »
    Now it makes sense, I am getting 4kw panels but a 3.68kw invertor, do I divide by 4 or 3.68?

    It would be interesting to see the details of your proposed system plus any issues your roof has, such as shading, different slopes etc.
  • Oscargrouch
    Oscargrouch Posts: 4,393 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    InVestor wrote: »
    10.3 kWh today.

    Will this be the seventh month in a row below PVGIS Climate estimate?
    Ahh, I see now why you object to O's. 10.3 kWh looks much better than 2.575 O's for yesterday when my little system made 5.08 O's.......smiley-laughing021.gif You could perhaps, post it in kWp as opposed to O's if that makes you feel better........smiley-laughing021.gifsmiley-laughing021.gif
    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).
  • InVestor_2
    InVestor_2 Posts: 270 Forumite
    edited 27 April 2013 at 7:15PM
    Ahh, I see now why you object to O's. 10.3 kWh looks much better than 2.575 O's for yesterday when my little system made 5.08 O's.......smiley-laughing021.gif You could perhaps, post it in kWp as opposed to O's if that makes you feel better........smiley-laughing021.gifsmiley-laughing021.gif

    I prefer to think of it as £4.99 ;)

    I suppose it's always the case that those with 'little' ones try to find ways to exaggerate size smiley-laughing021.gifsmiley-laughing021.gif
  • tunnel
    tunnel Posts: 2,601 Forumite
    Part of the Furniture 1,000 Posts Combo Breaker
    InVestor wrote: »
    I prefer to think of it as £4.99 ;)

    I suppose it's always the case that those with 'little' ones try to find ways to exaggerate size smiley-laughing021.gifsmiley-laughing021.gif

    Ouch!!! Well below the belt:rotfl:

    On a lighter note managed 13kWh or 3.25 O's between the torrential downpours(hailstone). Been tricky trying to gauge the washer and drier and as a result I've had to "buy" 4.5kWh from the grid throughout the day:mad:. Good job I haven't an optiplug just yet, don't really see there would have been any advantage with one today.
    2 kWp SEbE , 2kWp SSW & 2.5kWp NWbW.....in sunny North Derbyshire17.7kWh Givenergy battery added(for the power hungry kids)
  • KevinG
    KevinG Posts: 2,088 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    7.89 kWh, 3.95 O's, slightly above PVGIS climate average for April but I'll be well below again at the end of the month.
    2kWp Solar PV - 10*200W Kioto, SMA Sunny Boy 2000HF, SSE facing, some shading in winter, 37° pitch, installed Jun-2011, inverter replaced Sep-2017 AND Feb-2022.
  • InVestor_2
    InVestor_2 Posts: 270 Forumite
    10.8 kWh today (£5.23)

    Still a little down on the month forecast.
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