So now I have a solar PV system how do I make the most of it???

edited 21 February 2012 at 9:19PM in Green & ethical MoneySaving
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  • Last couple of days have been pretty rubbish, but despite this we're well on target to beat PVGIS this month, and to beat it by some margin if this cloud/mist/fog clears off and we see some sunnier mornings.

    If we make an average of 9.8kWh a day until the end of the month we'll beat PVGIS by 25%, or 6.6kWh/day will see us hit PVGIS exactly.

    Time for a sun dance :dance:
    Cider Country Solar PV generator: 3.7kWp Enfinity system on unshaded SE (-36deg azimuth) & 45deg roof
  • had a look at total output today:

    310kwh for an `up time` of 725 hours since install. and thats winter production
  • Hi Everyone,
    I haven't been here for a while, and am interested to see discussion of how much is being generated, rather than what to do with it.
    On a different (now moribund) Solar PV thread I wondered in August 2011 whether my new Sanyo panels would justify their extra cost by working well in winter. Judging by what I read, they are doing me proud. My 3.29 kWp array has generated an average of 8.33kW hours per day in the 277 days since installation. Best winter days 9th Dec 11.6kW/h; 16th Jan 13.8kW/h; 26th Feb 17.0kW/h; 12th March 19.0kW/h. South facing near Brighton.
    I'm still waiting for the right box of tricks to control my immersion heater. There are some promising things on Electricians' Forum....
    Best Wishes to all Druids,
    OG
    O G :cool: Somewhere on the South Downs
    3.29kWp S by E
    Greetings to Druids everywhere
  • edwinkedwink Forumite
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    Hi Everyone,
    I haven't been here for a while, and am interested to see discussion of how much is being generated, rather than what to do with it.
    On a different (now moribund) Solar PV thread I wondered in August 2011 whether my new Sanyo panels would justify their extra cost by working well in winter. Judging by what I read, they are doing me proud. My 3.29 kWp array has generated an average of 8.33kW hours per day in the 277 days since installation. Best winter days 9th Dec 11.6kW/h; 16th Jan 13.8kW/h; 26th Feb 17.0kW/h; 12th March 19.0kW/h. South facing near Brighton.
    I'm still waiting for the right box of tricks to control my immersion heater. There are some promising things on Electricians' Forum....
    Best Wishes to all Druids,
    OG


    Hello OG

    I am in the south east in Hertfordshire. I have a 2.4kw array, 10 panels which are South facing. They generated 7Kwh today. Mostly it was overcast but this afternoon the sun did finally come out. I had my system installed last month. So I am also very interested it what others are generating.

    ED
    *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
    1 Cayuga duck Hoppy & 7 ex-battery hens - RIP Pingu
    Hens & ducks chat thread..... http://forums.moneysavingexpert.com/showthread.php?t=5282209
  • John_PierpointJohn_Pierpoint Forumite
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    Wed 14/3..7.60 kWh on a 3.6 kWp inverter - 18 SE facing 30 degree elevation panel system in S.Essex.
  • edited 15 March 2012 at 8:55AM
    jackieblackjackieblack Forumite
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    edited 15 March 2012 at 8:55AM
    March has been disappointing, so far, in NE Essex
    Despite a high of 11kWh generated on the 8th (:) highest since 15th Oct 11), we are almost half way through the month and only 55kWh generated so far - only 35% of prediction for March :(
    Shaping up to be the first month since Feb 11 to generate less than prediction :(, (although even if we generate no more at all this month, total generation since installation would still be approx 120% of predicted figures :D)
    Of course, there are still 17 days to go ...... maybe the sun will break through the thick fog we have at the moment and the rest of the month will be spectacular..:cool:
    2.22kWp Solar PV system installed Oct 2010, Fronius IG20 Inverter
    South facing (-5 deg), 30 degree pitch, no shading
    Everything will be alright in the end so, if it’s not yet alright, it means it’s not yet the end
    MFW #4 OPs: 2018 £866.89, 2019 £1322.33, 2020 £1337.07, 2021 £1250.00
    2022 (offset) YTD £875.00
    Quidquid Latine dictum sit altum videtur
  • Martyn1981Martyn1981 Forumite
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    March has been disappointing, so far, in NE Essex
    Despite a high of 11kWh generated on the 8th (:) highest since 15th Oct 11), we are almost half way through the month and only 55kWh generated so far - only 35% of prediction for March :(
    Shaping up to be the first month since Feb 11 to generate less than prediction :(, (although even if we generate no more at all this month, total generation since installation would still be approx 120% of predicted figures :D)

    Jackie, if Mch is poor, try this site afterwards:

    http://www.metoffice.gov.uk/climate/uk/anomacts/

    Click on sunshine, and Mch 2012 then see how this year compares to an average of 30 years.

    Weather has gone bad here too, freezing fog, it's almost like Winter!

    Mart.
    Mart. Cardiff. 5.58 kWp PV systems (3.58 ESE & 2.0 WNW)

    For general PV advice please see the PV FAQ thread on the Green & Ethical Board.
  • EricMearsEricMears Forumite
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    There's really not a lot of point worrying about how this year compares with last, next or even long term averages. The predictions are useful when deciding whether or not a future investment might be worthwhile but there's very little you can do with them after you've made the decision.

    Perhaps worth bearing predictions in mind if you're consistently below them but that would either be caused by weather (about which you can do nothing) or shading - which is pretty easy to detect just by standing outdoors and watching for shadows. Some shading can be overcome (e.g. prune a nearby tree); some can't (your neighbour probably wants to leave his roof where it is).

    Similarly, now is not the time to worry that your roof has the wrong slope or points in the wrong direction. You - &/or your installer - should have taken those points into consideration and designed the best installation for your house.
    NE Derbyshire.
    4kWp S Facing 17.5deg slope (dormer roof).
    BEV : Nissan Leaf e+
  • jackieblackjackieblack Forumite
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    maybe the sun will break through the thick fog we have at the moment and the rest of the month will be spectacular..:cool:

    Brilliant sunshine and blue skies appeared by 10am ! :j

    Maybe I should buy a lottery ticket...... I could be on a roll! :D
    2.22kWp Solar PV system installed Oct 2010, Fronius IG20 Inverter
    South facing (-5 deg), 30 degree pitch, no shading
    Everything will be alright in the end so, if it’s not yet alright, it means it’s not yet the end
    MFW #4 OPs: 2018 £866.89, 2019 £1322.33, 2020 £1337.07, 2021 £1250.00
    2022 (offset) YTD £875.00
    Quidquid Latine dictum sit altum videtur
  • jackieblackjackieblack Forumite
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    Martyn1981 wrote: »
    Jackie, if Mch is poor, try this site afterwards:

    http://www.metoffice.gov.uk/climate/uk/anomacts/

    Click on sunshine, and Mch 2012 then see how this year compares to an average of 30 years.

    Weather has gone bad here too, freezing fog, it's almost like Winter!

    Mart.

    Hi Martyn
    Someone, (I think it may have been zeupater) pointed me towards that website around this time last year.
    I do have a look occasionally, it's interesting to see how my % generation vs prediction compares.... it's generally been pretty accurate
    Not of any real use, but interesting (if slightly nerdy :o)
    2.22kWp Solar PV system installed Oct 2010, Fronius IG20 Inverter
    South facing (-5 deg), 30 degree pitch, no shading
    Everything will be alright in the end so, if it’s not yet alright, it means it’s not yet the end
    MFW #4 OPs: 2018 £866.89, 2019 £1322.33, 2020 £1337.07, 2021 £1250.00
    2022 (offset) YTD £875.00
    Quidquid Latine dictum sit altum videtur
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