May 2108 PV Generation

[Fintray]

My results for May were:

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

Total generation: 562.5kWh

Daily average: 18.1kWh

Generation per kWp: 145.3kWh

Daily average per kWp: 4.7kWh

PVGIS: 401kWh

%PVGIS: 140%

Best May ever (best month ever).

[john999boy]

Following on from my two worst (relative) months ever, I now have all time my best (any) month EVER! 

PVGIS Forecast  916 kWh
Total generation: 1244 kWh (135%)
Generation per kWp: 147 kWh
Daily average:  40.1 kWh
kWh/kWp: 4.74
Best day: 14th 55.8 kWh (188%)
Worst day(s): 30th 3.6 kWh (8.2%)
Export meter: 79%
Immersun:  108 kWh

[Nickel2]

73.29 kWh total
2.36 kWh per day

Grid use = 2.61 kWh per day

Last year's grid-only use for May = 4.7 kWh per day

4.97 - 4.70 = 270 Wh per day battery/ system losses = 10% (ish) of generated stored power.

Still no big battery yet. 

[Iain]

Hi

300 kWh Total
151.5 kWh / kWp

Iain

[Wickham]

May 2018
302.4 kWh
113.68 kWh/kWp
3.67 kWh/kWp/day
9.75 kWh/day

2018 113.68 kWh/kWp
2017 100.98
2016 111.09
2015 103.65
2014 102.11
2013 99.54
2012 99.11
2011 96.38

Best May so far.

[scfnet]

May 2018
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: 521.158kWh
Daily average: 16.812kWh
Generation per kWp: 147.846kWh
Daily average per kWp: 4.769kWh
Best day: 23.850kWh - 14/05/2018
Worst day: 3.656kWh - 24/05/2018

Capacity	Orientation	Slope	Lat	Total	Best	Worst	PVGIS	%PVGIS	kWh/kWp	Daily	Days
3.525	175	30	51.24N	521.158	23.850	3.656	424.000	122.915	147.846	16.812	31

[sam_cat]

May 2018
102.5kWh
102.5kWh/kWp

1kW panels into 1.5kW inverter (soon to be 2kW panels)



May 2017 - 99.3kWh

[Sprinter]

We also ended up with our best ever month, though the difference between the best may and the worst is not very much, were at least consistent here. But have to be happy with that.

[Mikel]

Total monthly production

May 2018  497.1 kWh

129.5 kWh/kWp

Av daily production   16.0 kWh

May 2017  421.8 kWh
May 2016  498.7 kWh
May 2015  471.0 kWh
May 2014  481.8 kWh
May 2013  529.4 kWh
May 2012  496.5 kWh


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

[linesrg]

Good Morning All,

Well, like Fintray, we have had another good month up here in Aberdeenshire land.

May total for the ROO/ FIT and FIT installation is 518.2kWHr and the 'extra' 1.675kW of panels (coupled with the Growatt) has delivered a further 127.7kWhr making a grand total of 645.9kWHr.

Things to be noted (possibly of interest to others):-

1. The amount of power coming from the 'extra' panels as an overall percentage has visibly improved as they have been moved to the steading roof from being propped up against the wall thereof. We're up from circa 19% contribution to 26% now although this is also biased by the Growatt contribution. Currently 5 of the 7 panels are on the roof. The Growatt battery isn't charging up to its full potential so I need to address this at some point.

2. Overall 'internal' utilisation of power produced has decreased from 77.2% to 66.2%. As detailed elsewhere this figure will deteriorate still further once the solar ET is 'fixed' (now scheduled for next week). I have no fundamental issue with exporting power but if sensible usage can be made on site then it will.

Regards

Richard

[dc]

Capacity    Orientation      Slope    Lat.   Total    Best        Worst        PVGIS   %PVGIS   KWh/KWp   Daily   Days
3.995   +10 South       35       51.77N   627.1   27.775   8.139   491   128%   157.0   5.06   31

2nd best month ever. May 2011 was 2KWh better, system was then brand new.
Last three days of mist and overcast weather from the North Sea prevented a new record.

[marshman]

Capacity   Orientation   Slope   Lat        Total          kWh/kWpk     
3.15kWpk      157.0      11.0   50.9        527.39kWh       167.42

Best May since install in 2010, 3rd best month (Best June 2017 at 574kWh [190kWh/kWpk])

Might have been more but we had 5 power outages, one was for 5 hours on a nice sunny day and another for several hours in the morning, so total figure could have been around 20kWh higher.

[dan_b]

394kWh.  Best month since install in 2012, a new record!  Some 46kWh more than my previous highest May (2016) and 20kWh higher than previous best month of July 2016

[brackwell]

Dan,
Have you any data for the battery?

Also 3rd best month ever at 173kwh/kwp

[paul149]

My May effort…
Out of 174.2 Hours* of Sun & 45.6mm* of Rain My Kit managed this;

Total generation: 462 kWh! not the best May ever but above average!

433 kWh May 2017,                  
471 kWh May 2016,
449 kWh May 2015,
416 kWh May 2014,
434 kWh May 2013,
450 kWh May 2012,    Avg to Date= 457 kWh

PVGIS (classic)  396   kWh = 116%
PVGIS (cmsaf)   409   kWh = 113%

Daily average:  14.9 kWh

Generation per kWp: 132 kWh

Daily average per kWp: 4.25 kWh

Best day:   23.3  kWh – 14th

Worst day:  3.1  kWh – 30th  

Capacity  Orientation  Slope   Lat  Total  Best  Worst  PVGIS(c)  %PVGIS  kWh/kWp   Daily/kWp  Days    
3.5              225          35    51.3  462   23.3    3.1     396           116        132           4.25       31

According to a British Gas Energy monitor (freebie so accuracy doubtful!)  in the last 30 days 201 kWh has been sent to immersions!
201kWh = 43% of the 462 kWh Generated so 57% not sent to immersions ( Exported!)  I know not really.

*source http://www.martynhicks.uk/weather/data.php?page=m05y2018