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Renewables: "talking 'bout my generation"
Comments
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Happy New Year to all, let us hope it'll be better than 2020...
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).6 -
The end of the darkest month.
So the results:
Electricity Generated: 71.84kwh, or 8.07 O’s
Electricity Consumed: 204.65kwh, of which 31% came from my solar panels
Electricity Exported: 9.13kwh.
Best day: 2nd December, 6.21kwh generated.
Worst Day: 10th December, 0.281kwh generated.
Number of days less than 1kwh generated: 14
Number of days more than 3kwh generated: 10
Heres to 11 brighter months ahead!8.9kw solar. 12 panels ESE, 16 panels SSW. JA solar 320watt smart panels. Solar Edge 8KW HD wave inverter. Located Aberdeenshire6 -
A pretty disastrous month for Dec at 28% below PVGIS figures but for whole of 2020 we managed 5% over PVGIS.
Even at December's low generation, we still only managed to self use 72% of it (I don't have reliable figures for full year)
NE Derbyshire.4kWp S Facing 17.5deg slope (dormer roof).24kWh of Pylontech batteries with Lux controller BEV : Hyundai Ioniq54 -
Similar here for December with just 70% of PVGIS but I did use 98.4% of it. Not a bad year, though, with 98% of PVGIS achieved compared to 97.4% last year.EricMears said:A pretty disastrous month for Dec at 28% below PVGIS figures but for whole of 2020 we managed 5% over PVGIS.
Even at December's low generation, we still only managed to self use 72% of it (I don't have reliable figures for full year)
693kwh imported from the grid at an average cost of 11.5p/kwh on Octopus Go.Northern Lincolnshire. 7.8 kWp system, (4.2 kWwest facing panels , 3.6 kWeast facing), Solis inverters installed 2018, 5kW SSE facing system (shaded in afternoon) added in 2025 with Tesla PW3 battery, Mitsubishi SRK35ZS-S and SRK20ZS-S Wall Mounted A2A Heat Pumps, ex Nissan Leaf owner.4 -
ASavvyBuyer said:Halfway through December update:Prediction of 107.6% of PVGIS estimate for December.So far, used 100% of Solar PV generation.Average of 8.51p/kWh (inc VAT) for all imported electric on Octopus Go Faster tariff.Would currently be average of 12.21p/kWh (inc VAT) if on Agile, for our usage profile.Just 120kWh of gas used so far, compared with same periods in previous years average of over 800kWh by having the 2nd heat pump.Update for December & 2020.Achieved 100.7% of PVGIS estimate for December & 104.4% for 2020, making it the best year since installation.Used 100% of Solar PV generation for December & Average of 85.9% for 2020.Average of 8.78p/kWh (incVAT) for all imported electric on Octopus Go Faster 01:30-06:30 tariff.Would currently be an average of 11.82p/kWh (inc VAT) if on Agile, for our usage profile.Just 155kWh of gas used, compared with same periods in previous years average of over 1,500kWh for December.Annual gas use now down to less than half what it used to be before ASHP's installed. Predicted to be less than 25% by the end of the Winter.No Petrol or Diesel.Happy New Year to All.6
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Sorry for my extreme lack of postings but at least here's the monthly/annual update. December was not great at 27% below PVGIS, which is actually about average for me. But the year as a whole was easily my best ever at 1,032.21 Os or 9.6% above PVGIS. Here's to an even better 2021 in every respect.
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-2022.5 -
Cardiff calling:
Average (Dec) month here - 102% of PVGIS and 14.37 O's.
Import was 463kWh.
Consumption was 519kWh.
Export 24kWh.
Gas consumption ~1,518kWh.
No off-site car charging.
Year end is 110%. Best year ever with 4,831kWh or 866 O's.
Gas consumption up, despite a second small ASHP, but that's probably down to C19 and the house being used more ~8,019kWh.Mart. Cardiff. 8.72 kWp PV systems (2.12 SSW 4.6 ESE & 2.0 WNW). 28kWh 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.4 -
Not the best of days with 0.24 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).5 -
Bit better here, 1.7 O's. ☀️☀️☀️Oscargrouch said:Not the best of days with 0.24 O's
Predicting 210% for the month.
Scott in Fife, 2.9kwp pv SSW facing, 2.7kw Fronius inverter installed Jan 2012 - 14.3kwh Seplos Mason battery storage with Lux ac controller - Renault Zoe 40kwh, Corsa-e 50kwh, Zappi EV charger and Octopus Go5 -
0.32 O here for the best day of the month & year, so far.
5
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