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  • FIRST POST
    • Kernel Sanders
    • By Kernel Sanders 15th Mar 12, 11:06 PM
    • 3,437Posts
    • 1,411Thanks
    Kernel Sanders
    Renewables: "talking 'bout my generation"
    • #1
    • 15th Mar 12, 11:06 PM
    Renewables: "talking 'bout my generation" 15th Mar 12 at 11:06 PM
    Please forgive the corny thread title inspired by The Who, but this post on the bloated 'how do I make the most of it' thread prompted me to initiate a new one...
    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.
    Originally posted by old grouser
    Well, there was yet another misty and bleak start in North Notts today (Thursday), but my SSW 3.92 kWp system was generating around 3kW for just a few minutes between 12.15 and 13.00, but enough to get the immersion heater hot enough for a shower. It seems to drop below that figure before it reaches 13.55 (optimum orientation). Final figure was just over 14kWh.

    BTW, there was an item about solar generation in Germany on the radio today; you can stream it here:
    http://www.bbc.co.uk/iplayer/episode/b01d2rvn/PM_15_03_2012/
    Just click on the speaker symbol on the left, then drag the time cursor at the bottom to 25mins 30 secs then release.
    Last edited by Kernel Sanders; 19-12-2012 at 6:01 PM.
Page 1131
    • legoman62
    • By legoman62 14th Apr 19, 7:53 PM
    • 2,712 Posts
    • 14,030 Thanks
    legoman62
    Generally poor day. 3.73 O's
    Originally posted by Merlin139
    Generally poorer day here 3.3 O's today
    16 Sanyo Hit 250s.4kWp SMA 3.8kWp inverter. SW roof. 28° pitch.
    Minimal shade. Nov 2011 install. N.E Lincs Coast. Hybrid car
    • onomatopoeia99
    • By onomatopoeia99 14th Apr 19, 8:01 PM
    • 5,447 Posts
    • 12,351 Thanks
    onomatopoeia99
    3.07 O today, not too surprising as it was mostly cloudy.
    INTP, nerd, libertarian and scifi geek. Home is where my books are.

    5.2kWp system, SE facing, >1% shading, installed March 2019.
    • 1961Nick
    • By 1961Nick 14th Apr 19, 8:11 PM
    • 404 Posts
    • 1,937 Thanks
    1961Nick
    A slightly disappointing 2.91 O’s

    I shouldn’t complain because it’s the first day with any meaningful import day for a week.
    4kWp (black/black) - Sofar Inverter - SSE(141°) - 30° pitch - North Lincs
    Installed June 2013 - PVGIS = 3400

    Sofar ME3000SP Inverter & 5 x Pylontech US2000B Plus Batteries - 12kWh
    • Oscargrouch
    • By Oscargrouch 14th Apr 19, 9:07 PM
    • 3,293 Posts
    • 16,072 Thanks
    Oscargrouch
    Generally poor day. 3.73 O's
    Originally posted by Merlin139
    Even poorer with only 3.36 O's for me........

    Edit: Apparently not as poor as some...
    Last edited by Oscargrouch; 14-04-2019 at 9:09 PM.
    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

    Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).
    • onomatopoeia99
    • By onomatopoeia99 15th Apr 19, 4:56 PM
    • 5,447 Posts
    • 12,351 Thanks
    onomatopoeia99
    4.75 O today, not bad as it seemed to be cloudy a lot.
    INTP, nerd, libertarian and scifi geek. Home is where my books are.

    5.2kWp system, SE facing, >1% shading, installed March 2019.
    • 1961Nick
    • By 1961Nick 15th Apr 19, 6:22 PM
    • 404 Posts
    • 1,937 Thanks
    1961Nick
    5.52 O's from sunny Lincolnshire
    4kWp (black/black) - Sofar Inverter - SSE(141°) - 30° pitch - North Lincs
    Installed June 2013 - PVGIS = 3400

    Sofar ME3000SP Inverter & 5 x Pylontech US2000B Plus Batteries - 12kWh
    • legoman62
    • By legoman62 15th Apr 19, 7:06 PM
    • 2,712 Posts
    • 14,030 Thanks
    legoman62
    Dull on the E coast 3.075 O's here today...maybe tomorrow
    16 Sanyo Hit 250s.4kWp SMA 3.8kWp inverter. SW roof. 28° pitch.
    Minimal shade. Nov 2011 install. N.E Lincs Coast. Hybrid car
    • Oscargrouch
    • By Oscargrouch 15th Apr 19, 7:06 PM
    • 3,293 Posts
    • 16,072 Thanks
    Oscargrouch
    5.52 O's from sunny Lincolnshire
    Originally posted by 1961Nick
    Good, but not good enough.. A nice little Hawaii + 0.96 O's....
    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

    Definition of 'O's = kWh/kWp (kWh = your daily & accurate Generation figure) (kWp = the rated output of your PV Panels).
    • JKenH
    • By JKenH 15th Apr 19, 8:18 PM
    • 317 Posts
    • 1,352 Thanks
    JKenH
    An unexpectedly good day. 1 kWh ahead of previous 2019 best most of the day then at teatime a few clouds appeared so finished at 3.995 Os, just 40 wh short of a wink. Half way through and at 49% of full month target so mustn’t grumble.
    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
    • Coastalwatch
    • By Coastalwatch 15th Apr 19, 9:48 PM
    • 509 Posts
    • 1,973 Thanks
    Coastalwatch
    A very welocme 5.36 O's today bringing us almost on par at halfway through the month.

    According to Solaredge we've now harvested 10MWh's energy, although the export meter disagrees, showing some 310kWh's less!
    East coast, lat 51.97. 8.26kw SSE, 23° pitch + 0.59kw WSW vertical. Nissan Leaf plus one dirty diesel. Still waiting for V2H and home storage to become available at sensible cost.
    • EricMears
    • By EricMears 16th Apr 19, 5:14 AM
    • 2,429 Posts
    • 4,233 Thanks
    EricMears
    . . . bringing us almost on par at halfway through the month.
    Originally posted by Coastalwatch
    Actually, insolation should rise during the month so if you've got to half of April's 'ration' by halfway through the month you're doing better than pvgis would predict.
    NE Derbyshire.
    4kWp S Facing 17.5deg slope (dormer roof).
    • 1961Nick
    • By 1961Nick 16th Apr 19, 5:18 AM
    • 404 Posts
    • 1,937 Thanks
    1961Nick
    Actually, insolation should rise during the month so if you've got to half of April's 'ration' by halfway through the month you're doing better than pvgis would predict.
    Originally posted by EricMears
    I've just checked & I'm at 60.6% so it looks very promising. Only need 2.48 O's a day from now on.
    4kWp (black/black) - Sofar Inverter - SSE(141°) - 30° pitch - North Lincs
    Installed June 2013 - PVGIS = 3400

    Sofar ME3000SP Inverter & 5 x Pylontech US2000B Plus Batteries - 12kWh
    • Merlin139
    • By Merlin139 16th Apr 19, 5:23 AM
    • 5,525 Posts
    • 21,227 Thanks
    Merlin139
    Goodish morning then dire just dire after midday!

    2.73 O's
    3.975 kWp PV SolarEdge System South Facing 10% Shading Installed 21 May 2014 Located in Mid East Yorkshire.
    • JKenH
    • By JKenH 16th Apr 19, 7:38 AM
    • 317 Posts
    • 1,352 Thanks
    JKenH
    I've just checked & I'm at 60.6% so it looks very promising. Only need 2.48 O's a day from now on.
    Originally posted by 1961Nick
    That’s 23.6% better than me relative to our respective PVGIS figures and you can’t be that far away. I am at DN21 3PS, where are you if you don’t mind me asking?

    Shortly after I got my panels I did a PVGIS comparison with a south facing roof at the same location and that predicted 104.4 Os for April compared to my target of 91.4 Os. Your calculation suggests your target is about 94 Os. Is that right?

    Edit: Those figures were based on my 39* roof slope not 30* btw.
    Last edited by JKenH; 16-04-2019 at 7:47 AM.
    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
    • JKenH
    • By JKenH 16th Apr 19, 8:08 AM
    • 317 Posts
    • 1,352 Thanks
    JKenH
    Goodish morning then dire just dire after midday!

    2.73 O's
    Originally posted by Merlin139
    Maybe it will be your turn today.
    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
    • 1961Nick
    • By 1961Nick 16th Apr 19, 8:18 AM
    • 404 Posts
    • 1,937 Thanks
    1961Nick
    That’s 23.6% better than me relative to our respective PVGIS figures and you can’t be that far away. I am at DN21 3PS, where are you if you don’t mind me asking?

    Shortly after I got my panels I did a PVGIS comparison with a south facing roof at the same location and that predicted 104.4 Os for April compared to my target of 91.4 Os. Your calculation suggests your target is about 94 Os. Is that right?

    Edit: Those figures were based on my 39* roof slope not 30* btw.
    Originally posted by JKenH
    94 O's is right on the money.

    I had to replace my inverter at the end of January & this one seems to be flying. Both February & March were record months. Unlikely to set a record this month due to the freak April in 2015.

    All the extra kWhs are gratefully received by the pylontechs.

    I'm located in DN9....about 7 miles as the crow flies.

    Edit:
    Just noticed your orientation.....your output is going to be very susceptible to misty mornings which could account for the difference. It'll be interesting to see how we compare later in the year.
    Last edited by 1961Nick; 16-04-2019 at 8:25 AM.
    4kWp (black/black) - Sofar Inverter - SSE(141°) - 30° pitch - North Lincs
    Installed June 2013 - PVGIS = 3400

    Sofar ME3000SP Inverter & 5 x Pylontech US2000B Plus Batteries - 12kWh
    • 1961Nick
    • By 1961Nick 16th Apr 19, 8:26 AM
    • 404 Posts
    • 1,937 Thanks
    1961Nick
    Maybe it will be your turn today.
    Originally posted by JKenH
    It usually is!
    4kWp (black/black) - Sofar Inverter - SSE(141°) - 30° pitch - North Lincs
    Installed June 2013 - PVGIS = 3400

    Sofar ME3000SP Inverter & 5 x Pylontech US2000B Plus Batteries - 12kWh
    • JKenH
    • By JKenH 16th Apr 19, 8:49 AM
    • 317 Posts
    • 1,352 Thanks
    JKenH
    94 O's is right on the money.

    I had to replace my inverter at the end of January & this one seems to be flying. Both February & March were record months. Unlikely to set a record this month due to the freak April in 2015.

    All the extra kWhs are gratefully received by the pylontechs.

    I'm located in DN9....about 7 miles as the crow flies.

    Edit:
    Just noticed your orientation.....your output is going to be very susceptible to misty mornings which could account for the difference. It'll be interesting to see how we compare later in the year.
    Originally posted by 1961Nick
    I originate from the Isle, myself.

    I do find on these hazy or overcast days my system performs relatively well with a lot of reflected (refracted?) light giving both sides of the roof a chance.

    I am really interested in your Pylontech battery set up. I did have a Moixa battery for a short time as part of my new install last year but sent it back and I believe Moixa have now switched to Pylontech. I dont think the east/west roof installation works anywhere near as well with a battery as a south roof does as there just isn’t enough spare solar PV in winter to make it worthwhile, at the moment at least.
    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
    • 1961Nick
    • By 1961Nick 16th Apr 19, 9:13 AM
    • 404 Posts
    • 1,937 Thanks
    1961Nick
    I originate from the Isle, myself.

    I do find on these hazy or overcast days my system performs relatively well with a lot of reflected (refracted?) light giving both sides of the roof a chance.

    I am really interested in your Pylontech battery set up. I did have a Moixa battery for a short time as part of my new install last year but sent it back and I believe Moixa have now switched to Pylontech. I dont think the east/west roof installation works anywhere near as well with a battery as a south roof does as there just isn’t enough spare solar PV in winter to make it worthwhile, at the moment at least.
    Originally posted by JKenH
    You're welcome to pop round for a coffee & a chat about batteries any time. It's probably about 14 miles by road.

    I guess that at this time of year your iBoost will be mopping up any potential export.
    4kWp (black/black) - Sofar Inverter - SSE(141°) - 30° pitch - North Lincs
    Installed June 2013 - PVGIS = 3400

    Sofar ME3000SP Inverter & 5 x Pylontech US2000B Plus Batteries - 12kWh
    • KevinG
    • By KevinG 16th Apr 19, 10:52 AM
    • 1,417 Posts
    • 3,864 Thanks
    KevinG
    5.78 Os yesterday, best of the year so far. Overcast and no chance of getting anywhere near that today. 41.6% of April PVGIS at the half-way point.
    Last edited by KevinG; 16-04-2019 at 10:55 AM.
    Baxi Ecogen 24/1.0 Micro-CHP boiler installed Oct-2010; 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.
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