Navitron Renewable Energy and Sustainability Forum

Energy/Electricity Storage and Use/Grid Connection => Electricity Generation/Consumption Data Logs => Topic started by: Fintray on May 31, 2018, 08:49:26 PM



Title: May 2108 PV Generation
Post by: Fintray on May 31, 2018, 08:49:26 PM
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).


Title: Re: May 2108 PV Generation
Post by: john999boy on May 31, 2018, 09:23:49 PM
Following on from my two worst (relative) months ever, I now have all time my best (any) month EVER!  bike:

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


Title: Re: May 2108 PV Generation
Post by: Nickel2 on May 31, 2018, 10:13:51 PM
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.  :(


Title: Re: May 2108 PV Generation
Post by: Iain on June 01, 2018, 04:53:30 AM
Hi

300 kWh Total
151.5 kWh / kWp

Iain


Title: Re: May 2108 PV Generation
Post by: Wickham on June 01, 2018, 06:21:33 AM
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.


Title: Re: May 2108 PV Generation
Post by: scfnet on June 01, 2018, 07:56:32 AM
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   
3.5251753051.24N521.15823.8503.656424.000122.915147.84616.81231


Title: Re: May 2108 PV Generation
Post by: sam_cat on June 01, 2018, 08:11:34 AM
May 2018
102.5kWh
102.5kWh/kWp

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

(http://i.imgur.com/meiyQ5T.png) (https://imgur.com/meiyQ5T)

May 2017 - 99.3kWh


Title: Re: May 2108 PV Generation
Post by: Sprinter on June 01, 2018, 09:34:19 AM
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.

(https://preview.ibb.co/jbHPdJ/Capture.jpg) (https://ibb.co/ngTVJJ)


Title: Re: May 2108 PV Generation
Post by: Mikel on June 01, 2018, 09:47:33 AM
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


Title: Re: May 2108 PV Generation
Post by: linesrg on June 01, 2018, 10:33:53 AM
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


Title: Re: May 2108 PV Generation
Post by: dc on June 01, 2018, 11:03:04 AM
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.


Title: Re: May 2108 PV Generation
Post by: marshman on June 01, 2018, 04:33:42 PM
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.


Title: Re: May 2108 PV Generation
Post by: dan_b on June 01, 2018, 05:49:36 PM
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


Title: Re: May 2108 PV Generation
Post by: brackwell on June 02, 2018, 07:05:52 AM
Dan,
Have you any data for the battery?

Also 3rd best month ever at 173kwh/kwp


Title: Re: May 2108 PV Generation
Post by: paul149 on June 02, 2018, 01:45:05 PM
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


Title: Re: May 2108 PV Generation
Post by: JR on June 02, 2018, 05:39:21 PM
2.5 system  10ZNShine panels  Sunny Boy Inverter  Orientating 170 degrees south  Inclination 30 degrees  East Midlands

May 2018 - 365

May 2017 - 306
May 2016 - 324
May 2015 - 301
May 2014 - 291
May 2013 - 303

Expected generation 279



Title: Re: May 2108 PV Generation
Post by: mysterons on June 04, 2018, 10:05:52 AM
Total for May 2018 is 615kwh, like others have reported it's my best May figure since install.

Slow start to June though as back to light North wind and sea fret  :(


Title: Re: May 2108 PV Generation
Post by: supremetwo on June 04, 2018, 11:57:06 AM
Total May 2018: 533 kWh BDPV PVGIS 461 kWh

Generation per kWp: 133 kWh

Best day:   17th 24.1 kWh
Worst day: 30th   4.97 kWh

The best May but not quite the best month since install - Jul 2013 was 556 kWh.


Title: Re: May 2108 PV Generation
Post by: solluva II on June 04, 2018, 10:24:57 PM
The best May out of the seven since installation and the third best of the 81 months.

System: Ground mounted 3.84kWp, slope 40°, 15° east of south,, Lat 50° 40' West Dorset

Generation for the months of May:
2018 -  553.5 kWh
2017 -  452.0 kWh
2016 – 489.0 kWh
2015 – 449.5 kWh
2014 – 452.3 kWh
2013 – 514.5 kWh
2012 – 549.2 kWh

Mid-May Shading. Mornings to 07:00 BST. Afternoons from 18:00 BST.

PVGIS: 476 kWh not taking shading into account.
PVGIS: 432 kWh taking shading into account.(9.3 % reduction)

Total generation: 553.5 kWh 128.1 % of PVGIS (shaded) prediction.
Generation per kWp: 144.1 kWh

Daily average
Predicted PVGIS (shaded): 14.4 kWh
Actual: 17.9 kWh
Daily average per kWp: 4.6 kWh


Title: Re: May 2108 PV Generation
Post by: firepete on June 06, 2018, 04:58:15 PM
sunny essex 3.9 kw  system
generation  554 kwh


Title: Re: May 2108 PV Generation
Post by: hallie on June 09, 2018, 12:19:58 PM
Third highest month ever

Total:  549.5 kwh

Best day:25.1 kwh 14/05/2018

Worst day: 5.1 kwh 30/05/2018

Generation per kwp: 149.32 kwh

Daily average per kwp: 4.82 kwh

Daily average: 17.73 kwh


Title: Re: May 2108 PV Generation
Post by: volzhskyboy on June 20, 2018, 04:47:15 PM
Total Generation: 568.31 kWh (PVGIS-CMSAF 483 KWh)

Daily Average: 18.33 kWh 
                   
Generation per kWp: 142.08 kWh           
                     
Daily average per kWp: 4.58 kWh

Best Day: 28.47 kWh 14th May

Worst Day: 2.33 kWh - 30th May

Bill.


Title: Re: May 2108 PV Generation
Post by: Hydroteam on June 21, 2018, 07:19:53 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:        553.686 KWh
Minimum:               5.300 KWh, 30th May
Maximum:       23.496 KWh, 19th May
Average:               17.861 KWh