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Renewables: "talking 'bout my generation"

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Comments

  • Oscargrouch
    Oscargrouch Posts: 4,393 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    A dismal 0.28 O's..:(:cool:..coffee.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).
  • Coastalwatch
    Coastalwatch Posts: 3,608 Forumite
    Seventh Anniversary 1,000 Posts Name Dropper
    Oscargrouch wrote: »
    A dismal 0.28 O's..:(:cool:..coffee.gif
    A stonking 0.925 O's here, first day above pvgis!:)
    East coast, lat 51.97. 8.26kw SSE, 23° pitch + 0.59kw WSW vertical. Nissan Leaf plus Zappi charger and 2 x ASHP's. Givenergy 8.2 & 9.5 kWh batts, 2 x 3 kW ac inverters. Indra V2H . CoCharger Host, Interest in Ripple Energy & Abundance.
  • legoman62
    legoman62 Posts: 5,002 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    A less than I thought I had made :eek:0.475 O's today:D
    16 Sanyo Hit 250s.4kWp SMA 3.8kWp inverter. SW roof. 28° pitch. Minimal shade. Nov 2011 install. Hybrid car. Ripple Kirk Hill. N.E Lincs Coast.
  • JKenH
    JKenH Posts: 5,140 Forumite
    Seventh Anniversary 1,000 Posts Name Dropper
    Happy New Year everyone.

    A very disappointing December, despite what I thought was pretty reasonable weather for the time of year, with only 82% of PVGIS. We had a lot of sunshine in the first half of the month but the pitch and orientation of the roof means it only strikes the panels a glancing blow. Realistically, here, November through to February can be considered a waste of time. Our average daily December production is only about one tenth of what me might expect in midsummer.

    I know it’s not ben a bad December for some this year for but do others find historically PVGIS to be optimistic in the winter?

    Grid consumption averaged 12.5 kwh per day for the last 3 months (October 7.4, November 13.2, December 16.9) compared to 19kwh/day annual average pre solar. Part of that is down to solar but a significant part also down to modified usage of the on/off switch. We generated 608 kwh and ‘saved’ 598 kwh last quarter. (Average daily solar figures were Oct 11.2, Nov 4.7 and Dec 3.1 kwh).

    Because of the IBoost we use nearly all our solar PV from October onwards so it is fair to say that adding grid consumption to solar PV produces fairly realistic and consistent average daily total consumption figures for the 3 months of 18.6, 17.9 and 20.0 kwh. (Three days over Christmas with an electric cooker produced a December spike.)

    My target for 2019 is to get our annual daily average grid consumption below 10 kwh which would almost halve our grid usage.
    Northern Lincolnshire. 7.8 kWp system, (4.2 kw west facing panels , 3.6 kw east facing), Solis inverters, Solar IBoost water heater, Mitsubishi SRK35ZS-S and SRK20ZS-S Wall Mounted Inverter Heat Pumps, ex Nissan Leaf owner)
  • Martyn1981
    Martyn1981 Posts: 15,408 Forumite
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    JKenH wrote: »
    I know it’s not ben a bad December for some this year for but do others find historically PVGIS to be optimistic in the winter?

    My winter %'s are generally worse than summer %'s, but since I'm using PVGIS figures straight (no allowance for shading), I assume that the lower sun angle naturally increases the amount of shading at this time of the year.

    Basically, I think my winter targets are too optimistic, but I enjoy seeing actual performance v's 'max' theoretical. Overall, I find PVGIS estimates pessimistic, but I suspect that's down to the 14% default losses, which hasn't changed this decade, despite rising inverter efficiencies, and I suspect it being a bit too high to start with.
    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.
  • Coastalwatch
    Coastalwatch Posts: 3,608 Forumite
    Seventh Anniversary 1,000 Posts Name Dropper
    Investment interest in renewables and storage from a variety of finance organisations continues a'pace.
    Seems the financial boys are still getting on board!
    3 Jan 2019, 08:57
    NTR has landed €229 million (£207 million) in commitments for its second renewable energy income fund, attracting interest from some of Europe’s biggest financial powerhouses.
    https://www.solarpowerportal.co.uk/news/list
    East coast, lat 51.97. 8.26kw SSE, 23° pitch + 0.59kw WSW vertical. Nissan Leaf plus Zappi charger and 2 x ASHP's. Givenergy 8.2 & 9.5 kWh batts, 2 x 3 kW ac inverters. Indra V2H . CoCharger Host, Interest in Ripple Energy & Abundance.
  • Oscargrouch
    Oscargrouch Posts: 4,393 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    What 0.2 O's..Someone is avin a laugh..:mad:..coffee.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).
  • legoman62
    legoman62 Posts: 5,002 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Oscargrouch wrote: »
    What 0.2 O's..Someone is avin a laugh..:mad:..coffee.gif

    S'not me:mad:0.3 O's here today:(
    16 Sanyo Hit 250s.4kWp SMA 3.8kWp inverter. SW roof. 28° pitch. Minimal shade. Nov 2011 install. Hybrid car. Ripple Kirk Hill. N.E Lincs Coast.
  • Martyn1981
    Martyn1981 Posts: 15,408 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    legoman62 wrote: »
    S'not me:mad:0.3 O's here today:(

    Same here (if I round up). 0.287 O's.

    Forecast is solid sun all day, even from 4-5pm (sunset at 4.17) ..... might get an O and an arf?
    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
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    Martyn1981 wrote: »
    Same here (if I round up). 0.287 O's. Forecast is solid sun all day, even from 4-5pm (sunset at 4.17) ..... might get an O and an arf?
    Yeh right...0.64 O's here and today..:mad:..coffee.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).
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