📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!

Renewables: "talking 'bout my generation"

Options
11181191211231243816

Comments

  • jimjames
    jimjames Posts: 18,681 Forumite
    Part of the Furniture 10,000 Posts Photogenic Name Dropper
    An incredible start to September. 16.5 kWh today and total so far 208kWh. Forecast is sunny for rest of week until Friday so at this rate September may be our best month since we got the panels in Nov 2011.
    Remember the saying: if it looks too good to be true it almost certainly is.
  • Mid-point of the month and currently 40% above PVGIS (13.7kWh/day vs 9.81kWh/day). 70% of the target 294kWh in the bag :beer:
    Cider Country Solar PV generator: 3.7kWp Enfinity system on unshaded SE (-36deg azimuth) & 45deg roof
  • Martyn1981
    Martyn1981 Posts: 15,391 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    Mid-point of the month and currently 40% above PVGIS (13.7kWh/day vs 9.81kWh/day). 70% of the target 294kWh in the bag :beer:

    SDJ - Let me just pop my anorak on and do up all the toggles - then point out that post June the beginning of the months should be better than the ends, and vice versa before June.

    Though I'm happy to concede, that in reality this is complete and pointless gibberish.

    So far this year nothing seems to have gone to prediction. My July 'weekly receding generation' was 48, 82, 89, 138 and August's was 69, 89, 46, 73. I wish someone would have a quiet word with our weather and get it better organised. :mad:

    Imagine how boring this would all be if we lived in Greece or southern Spain, and got the same numbers day in, day out all summer. I'd have to find something else to occupy my time, probably have to spend time with the wife! ;)

    Just glad to finally have a month where I'm ahead, at approx 60% target. (All numbers ESE system(s)).

    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 wrote: »
    SDJ - Let me just pop my anorak on and do up all the toggles - then point out that post June the beginning of the months should be better than the ends, and vice versa before June.

    Though I'm happy to concede, that in reality this is complete and pointless gibberish.

    So far this year nothing seems to have gone to prediction. My July 'weekly receding generation' was 48, 82, 89, 138 and August's was 69, 89, 46, 73. I wish someone would have a quiet word with our weather and get it better organised. :mad:

    Imagine how boring this would all be if we lived in Greece or southern Spain, and got the same numbers day in, day out all summer. I'd have to find something else to occupy my time, probably have to spend time with the wife! ;)

    Just glad to finally have a month where I'm ahead, at approx 60% target. (All numbers ESE system(s)).

    Mart.

    Happy to don the anorak too Martyn and point out that the angle of the sun may actually improve performance as the date gets further away from the summer solstice. Up to a point of course!

    Guess it depends on system orientation(s), with Southly systems being more affected by solar elevation and less by length of day.
    Cider Country Solar PV generator: 3.7kWp Enfinity system on unshaded SE (-36deg azimuth) & 45deg roof
  • Just passed the 3MWh lifetime generation milestone today after 7½ months; now come 4½ lean months before my first anniversary comes around.
    Are you for real? - Glass Half Empty??
    :coffee:
  • Martyn1981
    Martyn1981 Posts: 15,391 Forumite
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    Happy to don the anorak too Martyn and point out that the angle of the sun may actually improve performance as the date gets further away from the summer solstice. Up to a point of course!

    Guess it depends on system orientation(s), with Southly systems being more affected by solar elevation and less by length of day.

    That's some mighty fine shooting Tex. I think you de-toggled me!

    All of my systems are very summer orientated being shallow(ish) and East and West. My ESE has a June to Dec ratio of nearly 7:1, and the WNW of over 11:1. I think a steep south system might be nearer to 3:1. Well, you can't have everything I suppose.

    Sat / Sun both below average, but today and tomorrow look ok. In fact the following 3 days may be good too.

    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.
  • John_Pierpoint
    John_Pierpoint Posts: 8,401 Forumite
    Part of the Furniture 1,000 Posts
    edited 17 September 2012 at 9:18AM
    Only three days in September in single figures - yesterday by far the worst at 5.5kWh.
    Now difficult getting over 3 kW output even at noon.
    The "head of the beaver" in the morning on the graph's generation curve has disappeared as the sun is no longer high enough to peep over the SE adjoining roof ridge (comes round it instead, lost in the shrubbery).

    As winter progresses there are three trees that will need (ehm) "trimming" - ah carbon free fire wood?

    John
    KevinG wrote: »
    Is there anything you can do about it? My problem is a telegraph pole that starts casting a shadow in the afternoon in the winter months and I can't chop that down!

    Does your inverter offer more than one circuit ? (My one has two)

    If so, could you panels be rewired so that the utility pole's shadow knocks down only one circuit at a time? I would guess that half an output from the inverter generated by full sunshine, would be better than both circuits crippled? [...It is a bit late to introduce a system with one mini inverter per panel - I do know of someone with panels scattered over a complicated roof. They point at 3 of the 4 points of the compass - but I don't know how efficient this is]

    [3.6 kW "Aurora inverter"; panels on 30 degree SE facing roof in S. Essex].
    Just passed the 3MWh lifetime generation milestone today after 7½ months; now come 4½ lean months before my first anniversary comes around.

    I started on Valentine's day - so I've still got a couple of weeks to try and catch up with you!:D
  • shafeeq
    shafeeq Posts: 973 Forumite
    Part of the Furniture 500 Posts
    KevinG wrote: »
    Is there anything you can do about it? My problem is a telegraph pole that starts casting a shadow in the afternoon in the winter months and I can't chop that down!

    Hi KevinG

    If it was my tree I would have chopped it off.. it's the house that backs on to ours...

    I dream about having it chopped off :) :j

    Shafeeq
  • shafeeq
    shafeeq Posts: 973 Forumite
    Part of the Furniture 500 Posts
    Hi

    Yesterday was not a good day.. mostly cloudy.. hardly any sun. 4.34kwh
  • KevinG
    KevinG Posts: 2,088 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    shafeeq wrote: »
    Yesterday was not a good day.. mostly cloudy.. hardly any sun. 4.34kwh
    I was just going to forget about it. 2.71kWh :(
    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.
Meet your Ambassadors

🚀 Getting Started

Hi new member!

Our Getting Started Guide will help you get the most out of the Forum

Categories

  • All Categories
  • 351.1K Banking & Borrowing
  • 253.1K Reduce Debt & Boost Income
  • 453.6K Spending & Discounts
  • 244.1K Work, Benefits & Business
  • 599K Mortgages, Homes & Bills
  • 177K Life & Family
  • 257.4K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 16.1K Discuss & Feedback
  • 37.6K Read-Only Boards

Is this how you want to be seen?

We see you are using a default avatar. It takes only a few seconds to pick a picture.