December 2021 Generation

Update your annual/monthly generation data. Please list system details in first post.
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Stinsy
Posts: 3661
Joined: Wed Jun 02, 2021 1:09 pm

December 2021 Generation

#1

Post by Stinsy »

System 1 System 2Total
kWp4.081.145.22
Generation (kwh) 36.57.744.2
kWh/kWp 9.06.88.5
Exported (kWh) 5.9
Exported (%) 13.3
What can I say? December...
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
6x 2.4kWh Pylontech batteries (14.4kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
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Joeboy
Posts: 9183
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: December 2021 Generation

#2

Post by Joeboy »

Combined 40kWh generation. :roll:
15kW PV SE, VI, HM, EN
42kWh LFPO4 storage
73kWh V2H EV
7kW ASHP
200ltr HWT.
3G
Deep insulation, air leak ct'd home
WBSx2
Low energy bulbs
Veg patches & fruit
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greentangerine
Posts: 86
Joined: Mon Aug 23, 2021 12:31 pm
Location: Dorset

Re: December 2021 Generation

#3

Post by greentangerine »

My original system (on which I have FIT) was nearly 300kWh down on last year's 3704kWh at 3427kWh (which was the best since it was installed in 2010).

My three systems combined were about 250kWh down on last year at 6955kWh.
65 x Ø58mm SunnPro/Gledhill 450l
Solis Mini 4G 3kW/Sharp ND210/2.94kWp
SB1600/Sharp ND220/1.76kWp
SB1600/Kinve 235/2.115kWp
Dean Forge Croft Clearburn 11kW
SoFar ME3000/Pylontech 42.4kWh
Ecodan 14kW HP
MG4
PVOutput
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Tinbum
Posts: 1284
Joined: Mon May 31, 2021 9:55 pm

Re: December 2021 Generation

#4

Post by Tinbum »

Worst December, other than 2015, since my system was installed in 2012

12.01 kWh/kWp
Last edited by Tinbum on Sat Jan 01, 2022 12:20 pm, edited 1 time in total.
85no 58mm solar thermal tubes, 28.5Kw PV, 3x Sunny Island 5048, 135kWh Rolls batteries, 52kWh Growatt storage GBLI 6532, 66kWh Pylontech US3000C, 43kWh DIY, Sofar ME3000's, Brosley wood burner and 250lt DHW
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Fintray
Posts: 1832
Joined: Mon May 31, 2021 6:37 pm
Location: Aberdeenshire

Re: December 2021 Generation

#5

Post by Fintray »

My results for December were:

3.87 kWp, slope 50 degrees, due south, lat 57.15

Total generation: 63.9kWh

Daily average: 2kWh

Generation per kWp: 16.5kWh

Daily average per kWp: 0.5kWh

PVGIS: 62.1kWh

%PVGIS: 103%
3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
MK2 PV router DHW diverter
Morso 5kW WBS
Vaillant AroTherm 10kW ASHP
Nissan Leaf
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Stinsy
Posts: 3661
Joined: Wed Jun 02, 2021 1:09 pm

Re: December 2021 Generation

#6

Post by Stinsy »

Joeboy wrote: ↑Sat Jan 01, 2022 11:30 am Combined 40kWh generation. :roll:
Batteries do the heavy lifting this time of year rather than solar. I do though need a little solar to get me all the way through.

Yesterday was a good example: 3.6kWh of solar so used 1.43kWh of peak electric and 16.6kWh of off-peak.
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
6x 2.4kWh Pylontech batteries (14.4kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
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marshman
Posts: 615
Joined: Thu Jun 17, 2021 7:58 pm

Re: December 2021 Generation

#7

Post by marshman »

kWh/kWpk 12.4
Last edited by marshman on Sun Jun 11, 2023 9:48 pm, edited 1 time in total.
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JR
Posts: 53
Joined: Wed Jun 02, 2021 8:30 pm

Re: December 2021 Generation

#8

Post by JR »

Worst generation in 10 years!

December 2021 - 40

Best year was 2014 - 98

Expected generation - 54
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Adokforme
Posts: 683
Joined: Sun Sep 19, 2021 10:09 pm

Re: December 2021 Generation

#9

Post by Adokforme »

Cap 8.85 kWp, pitch 23, SSE, lat 51.97.

Total gen 160 kWh, 69% of pvgis.

Gen/kWp = 18.1 kWh's

Worst month since install, April 2018.
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