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Renewables: "talking 'bout my generation"

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  • legoman62
    legoman62 Posts: 4,983 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Just found this on another board....useful for S/P owners or anyone considering them;)

    http://www.theecoexperts.co.uk/solar-energy-calculator
    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.
  • KevinG
    KevinG Posts: 2,088 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    legoman62 wrote: »
    Just found this on another board....useful for S/P owners or anyone considering them;)

    http://www.theecoexperts.co.uk/solar-energy-calculator
    It's a shame the roof direction adjustment is so coarse, there was nothing that matched mine.
    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.
  • countryman_2
    countryman_2 Posts: 421 Forumite
    legoman62 wrote: »
    Just found this on another board....useful for S/P owners or anyone considering them;)

    http://www.theecoexperts.co.uk/solar-energy-calculator


    I was always under the impression that a South facing roof was the ideal situation but I note that as I move the direction arrow toward West, so the earnings on the calculator rise accordingly ??

    :question:
    4kw PV fitted 4th July 2014 (Green Energy NW £5600). WSW facing, 30 deg Pitch, Unshaded, Samil Solar River inverter, 16 Solar World Mono panels, Iboost on Immersion Heater. located in mid Lincolnshire.
  • jimmyboy420
    jimmyboy420 Posts: 1,004 Forumite
    Part of the Furniture Combo Breaker
    I believe that slightly south west is actually better than due south :)
    3.924kWp (12X327Wp SunPower). SolarEdge SE3500 inverter.
    Surrey/SE. 30 degree roof pitch, chimney shading from mid afternoon.
  • KevinG
    KevinG Posts: 2,088 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    countryman wrote: »
    I was always under the impression that a South facing roof was the ideal situation but I note that as I move the direction arrow toward West, so the earnings on the calculator rise accordingly ??
    Are you sure? they certainly don't for me, due South is by far the highest.
    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.
  • countryman_2
    countryman_2 Posts: 421 Forumite
    KevinG wrote: »
    Are you sure? they certainly don't for me, due South is by far the highest.



    Yes, the difference in savings of between South £553.03, South West £677.72, and West £776.42
    4kw PV fitted 4th July 2014 (Green Energy NW £5600). WSW facing, 30 deg Pitch, Unshaded, Samil Solar River inverter, 16 Solar World Mono panels, Iboost on Immersion Heater. located in mid Lincolnshire.
  • Martyn1981
    Martyn1981 Posts: 15,385 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    legoman62 wrote: »
    Just found this on another board....useful for S/P owners or anyone considering them;)

    http://www.theecoexperts.co.uk/solar-energy-calculator

    Not happy with their leccy savings calculator under the heading "percentage". It says:
    Select the amount of energy that you expect to sell back to the grid. The average UK home will sell between 25% and 35% of the energy it doesn't use back to the grid.

    Firstly, I'd expect the average UK home to export 60% to 70%, not 25% to 35%.

    Secondly, the statement is very odd "will sell between 25% and 35% of the energy it doesn't use back to the grid" ...... surely the average house will sell/export 100% of the energy it doesn't use, back to the grid.

    Thirdly, if you play with the percentage figure, it changes the export earnings figure, but with export deemed at 50% there wouldn't be any change.

    Sorry for the nit-picking, but when they get some bits wrong, it always makes me wonder about the rest.

    Pedantic Mart.

    PS I'm just being grumpy because the weather was a let down, and I only got an O. M.
    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.
  • Andy_WSM
    Andy_WSM Posts: 2,217 Forumite
    Part of the Furniture 1,000 Posts Uniform Washer Rampant Recycler
    I'm not convinced the calculator is right to be honest, it gives the same figures for a NE facing roof as it does for a SE facing roof. What?

    3.4 O's (13.35 kWh) here today. Great morning. Crap afternoon.

    There is rain, rain & more rain forecast for the next few days :(
  • Merlin139
    Merlin139 Posts: 7,258 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    edited 18 February 2015 at 6:26PM
    Some sun and some cloud produced the following:

    3.154717 O's (12.54 kWh)

    Back on course for PVGIS Est. 2.5 kWh UP!smiley-happy036.gif

    Peak production today was 3.633 kW
    3.795 kWp Solar PV System. Capital of the Wolds

  • countryman_2
    countryman_2 Posts: 421 Forumite
    Still churning away at 30w but I'll call mine in anyway.

    Decent enough today at 2.88 O's :)
    4kw PV fitted 4th July 2014 (Green Energy NW £5600). WSW facing, 30 deg Pitch, Unshaded, Samil Solar River inverter, 16 Solar World Mono panels, Iboost on Immersion Heater. located in mid Lincolnshire.
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