Navitron Renewable Energy and Sustainability Forum

Energy/Electricity Storage and Use/Grid Connection => Electricity Generation/Consumption Data Logs => Topic started by: paul149 on March 31, 2020, 07:25:27 PM



Title: March 2020 PV Generation
Post by: paul149 on March 31, 2020, 07:25:27 PM
Just got a ReD light on my Gen meter so for March gen figures are thus,

Out of 141 Hours 15 Mins* of Sun & 73.6 mm* of Rain My Kit managed this;

Total generation: 329 kWh ( best Mar Since 2012)

267 kWh Mar  2019
222 kWh Mar  2018,
270 kWh Mar  2017,                  
284 kWh Mar  2016,
294 kWh Mar  2015,
309 kWh Mar  2014,
201 kWh Mar  2013,
366 kWh Mar  2012,           Avg to Date= 282 kWh

PVGIS (classic)   230  kWh = 143%
PVGIS (cmsaf)    274  kWh = 120%

Daily average:  10.6 kWh

Generation per kWp: 94 kWh

Daily average per kWp: 3.03 kWh

Best day:     19.3  kWh 23rd

Worst day:  2.05  kWh 5th

Capacity  Orientation  Slope   Lat    Total    Best     Worst   PVGIS(c)   %PVGIS    kWh/kWp   Daily/kWp   Days    
3.5            225            35    51.3    329     19.3      2.05       230          143           94            3.03        31
*source http://www.martynhicks.uk/weather/data.php

Note: There appears to be no noticeable deterioration to output of system over the last 8 years, brilliant for zero maintenance or any intervention!





Title: Re: March 2020 PV Generation
Post by: john999boy on March 31, 2020, 08:12:24 PM
Five consecutive (YTD) record breaking days from the 22nd was a record in itself as well as being the second best March since installation.

PVGIS Forecast  570 kWh
Total generation: 907 kWh (159%)
Generation per kWp: 107.2 kWh
Daily average:  29.3 kWh
kWh/kWp: 3.46
Best day: 26th 52.5 kWh (284%)
Worst day: 18th 7.1 kWh (39%)
Export meter: 69%
Immersun:  135 kWh


Title: Re: March 2020 PV Generation
Post by: Wickham on April 01, 2020, 06:58:45 AM
March 2020
214.8 kWh total
80.75 kWh/kWp
2.60 kWh/kWp/day
6.93 kWh/day

2020 80.75 kWh/kWp
2019 66.62
2018 49.10
2017 58.78
2016 72.89
2015 73.82
2014 32.93 fault
2013 48.13
2012 84.28

A very good month.


Title: Re: March 2020 PV Generation
Post by: dc on April 01, 2020, 08:21:30 AM
Capacity    Orientation   Slope    Lat.       Total    Best          Worst       PVGIS   %PVGIS   KWh/KWp   Daily      Days
3.995   +10 South             35       51.77N        441   25.837   0.939   291   152%   110.4   3.56       31
My second best March result, albeit 5% less than 2014


Title: Re: March 2020 PV Generation
Post by: marshman on April 01, 2020, 12:21:14 PM
Capacity   Orientation   Slope   Lat        Total          kWh/kWpk   
3.15kWpk      157.0      11.0   50.9        338 kWh      107.3

Best March ever, well since install in April 2010. Sort of makes up for the dire Jan and Feb. Previous best was March 2014 at 332kWh.  This months output  was 2.5 times that achieved in Feb.


Title: Re: March 2020 PV Generation
Post by: JR on April 01, 2020, 12:38:35 PM
2.5 system  10ZNShine panels  Sunny Boy Inverter  Orientating 170 degrees south  Inclination 30 degrees  East Midlands

Mar 2020 - 241

Mar 2019 - 228
Mar 2018 - 152
Mar 2017 - 202
Mar 2016 - 197
Mar 2015 - 202
Mar 2014 - 245
Mar 2013 - 171

Expected generation 168




Title: Re: March 2020 PV Generation
Post by: Fintray on April 01, 2020, 01:51:07 PM
My results for March were:

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

Total generation: 342.8kWh

Daily average: 11kWh

Generation per kWp: 88.6kWh

Daily average per kWp: 2.86kWh

PVGIS: 294kWh

%PVGIS: 116%


Title: Re: March 2020 PV Generation
Post by: Mikel on April 01, 2020, 05:42:41 PM
Total monthly production

Mar 2020   348.9 kWh

90.9 kWh/kWp

Av daily production  11.3 kWh

Mar 2019 337.7 kWh
Mar 2018 285.1 kWh
Mar 2017 253.5 kWh
Mar 2016 337.8 kWh
Mar 2015 341.3 kWh
Mar 2014 280.9 kWh
Mar 2013 265.3 kWh
Mar 2012 373.6 kWh


3.84 kW, Ground mount, S facing, slope 25 degrees, 16*240w Sanyo HIT panels, Fronius IG 40 inverter, West Cornwall


Title: Re: March 2020 PV Generation
Post by: hallie on April 01, 2020, 06:21:57 PM
Total:  386.4 kwh

Best day: 22.1 kwh 23/03/2020

Worst day: 1.8 kwh 05/03/2020

Generation per kwp: 105 kwh

Daily average per kwp: 3.4 kwh

Daily average: 12.5 kwh


Title: Re: March 2020 PV Generation
Post by: kdmnx on April 02, 2020, 06:38:02 AM
Total:  386.4 kwh

Best day: 22.1 kwh 23/03/2020

Worst day: 1.8 kwh 05/03/2020

Generation per kwp: 105 kwh

Daily average per kwp: 3.4 kwh

Daily average: 12.5 kwh

105kWh/kWp?


Title: Re: March 2020 PV Generation
Post by: Fintray on April 02, 2020, 06:55:29 AM
Total:  386.4 kwh

Best day: 22.1 kwh 23/03/2020

Worst day: 1.8 kwh 05/03/2020

Generation per kwp: 105 kwh

Daily average per kwp: 3.4 kwh

Daily average: 12.5 kwh

105kWh/kWp?

Looked again and it should be 94.7kWh/kWp (386.4/4.08).  ::)
Unless you are dividing the total by the export limit of 3.68kW.


Title: Re: March 2020 PV Generation
Post by: brackwell on April 02, 2020, 07:14:16 AM
Best March ever  117.6 kwh/kwp


Title: Re: March 2020 PV Generation
Post by: JohnS on April 02, 2020, 09:48:12 AM
Total:  386.4 kwh

Best day: 22.1 kwh 23/03/2020

Worst day: 1.8 kwh 05/03/2020

Generation per kwp: 105 kwh

Daily average per kwp: 3.4 kwh

Daily average: 12.5 kwh

105kWh/kWp?

It is monthly kWh/kWp, not daily.   Definitely within expected range.


Title: Re: March 2020 PV Generation
Post by: scfnet on April 03, 2020, 07:29:59 AM
March 2020
System: 3.525kWp (15 Schott Poly 235, Sunny Boy TL4000)
Slope 30, 175 (South -5), Lat: 51.24N Long: 0.72W - Ash, Surrey
Total generation: 345.312kWh
Daily average: 11.139kWh
Generation per kWp: 97.961kWh
Daily average per kWp: 3.160kWh
Best day: 19.852kWh - 23/03/2020
Worst day: 1.036kWh - 05/03/2020
Capacity    Orientation    Slope    Lat    Total    Best    Worst    PVGIS    %PVGIS    kWh/kWp    Daily    Days   
3.5251753051.24N345.31219.8521.036289.000119.48597.96111.13931


Title: Re: March 2020 PV Generation
Post by: solluva II on April 05, 2020, 08:47:40 PM
System: Ground mounted 3.84kWp, slope 40, 15 east of south,, Lat 50 40' West Dorset
12 months generation to the end of March 2020 was 3675.2 kWh (957.1 kWh/kWp)

Generation for the months of March:
2020 -  358.4 kWh
2019 -  323.5 kWh
2018 -  257.2 kWh
2017 -  266.7 kWh
2016 -  359.0 kWh
2015 -  332.0 kWh
2014 409.5 kWh
2013 275.1 kWh
2012 421.7 kWh

Mid-March Shading. Mornings to 08:00GMT. Afternoons from 16:00GMT
PVGIS: 299 kWh not taking shading into account.
PVGIS: 278 kWh taking shading into account.(7.0 % reduction)

Total generation: 358.4 kWh 128.9 % of PVGIS (shaded) prediction.
Generation per kWp: 93.3 kWh

Daily average
Predicted PVGIS (shaded): 9.0 kWh
Actual: 11.6 kWh
 Daily average per kWp: 3.0 kWh

Best Day: 22.1 kWh on 25th
Best day per kWp: 5.8 kWh

Worst Days: 2.2kWh on 4th
Worst day per kWp: 0.57 kWh 






Title: Re: March 2020 PV Generation
Post by: supremetwo on April 05, 2020, 10:26:49 PM
Total March: 383kWh (BDPV PVGIS 338kWh)
Generation per kWp: 95.75kWh

Best day 23rd: 22.7kWh
Worst day 5th: 1.4kWh


Title: Re: March 2020 PV Generation
Post by: Hydroteam on April 12, 2020, 12:29:30 PM
System: 3.5KW, 14x Sanyo (now Panasonic) HIT 250 Panels, SMA SB 4000TL, 2x 7 panel strings

Location: Hampshire, UK, South (170 deg) facing

Total Generation: 382.562 KWh
Minimum: 1.350 KWh, 5th March
Maximum: 21.443 KWh, 23rd March
Average: 12.431 KWh


Title: Re: March 2020 PV Generation
Post by: hallie on April 12, 2020, 03:39:36 PM
Total:  386.4 kwh

Best day: 22.1 kwh 23/03/2020

Worst day: 1.8 kwh 05/03/2020

Generation per kwp: 105 kwh

Daily average per kwp: 3.4 kwh

Daily average: 12.5 kwh

105kWh/kWp?

Its a monthly reading 386.4 / 3.68 (16 x 230w panels) = 105


Title: Re: March 2020 PV Generation
Post by: hallie on April 12, 2020, 03:45:23 PM
Total:  386.4 kwh

Best day: 22.1 kwh 23/03/2020

Worst day: 1.8 kwh 05/03/2020

Generation per kwp: 105 kwh

Daily average per kwp: 3.4 kwh

Daily average: 12.5 kwh

105kWh/kWp?

Looked again and it should be 94.7kWh/kWp (386.4/4.08).  ::)
Unless you are dividing the total by the export limit of 3.68kW.

Its a monthly reading 386.4 / 3.68 (16 x 230w panels) = 105
 
The same way that you have worked yours out 342.8 / 3.87 = 88.6