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PV yields Aug 2022

Featured Replies

My figures generally mirror what other folks are posting, except I had low PV on August 2nd as well as on the 3rd. So these things can be very local.

Since the 4th there has been much PV happiness for my system.

1 hour ago, PowerUser said:

Can you please specify the amount panels and wattage when you post those figures. 

They are in my signature

 

Pi$$ poor performance from my 12° roof since about April.  6.37kWp system battling to get to 16kWh per day.  

image.png.8681fcb703ba6e85ee433d34e8c5e729.png

Looking at tilting up the second row of panels. Analysis of NREL data shows I'll get a 17% improvement in the May - Aug trimester on that half of my panels if I tilt it to 30°.  Now the question - which is the better spend? Do this or just add a few more panels, properly angled of possible?  

image.png.ec157e164b72c5b1c5852b46c3461355.png

On 2022/08/16 at 2:41 PM, MakoShark said:

14 x 455w panels

image.png.4eb87464924ce7d8bc7c0010b670c23e.png

 

image.png.dcaff1db0484d498dc1f643c19b435cf.png

 

 

I also have 14 x 455 but much lower output in winter (low roof pitch angle and my wife's palm trees play a role here). What is your roof angle? Care to share daily graphs for the 3rd and 5th?  

Edited by Scubadude

13 minutes ago, Scubadude said:

I also have 14 x 455 but much lower output in winter (low roof pitch angle and my wife's palm trees play a role here). What is your roof angle? Care to share daily graphs for the 3rd and 5th?  

My roof is the standard angle, I think around 20 to 25 degrees but does face exactly north and not much shading...

 

3rd:
image.png.daae76f06a1da1b55fe9b30b9d77a076.png

 

5th:

image.png.860feccd88d8cb597321e44cd2754cfb.png

 

image.thumb.png.04ec7a9a2936785f90b2e58303317835.png

Edited by MakoShark

Mine is perfectly north but only 12° slope and a palm tree either side causing morning and afternoon shading in winter.  My sad picture for the 5th ...

 

 

Capturegds.JPG

  • Author
2 hours ago, Scubadude said:

Mine is perfectly north but only 12° slope and a palm tree either side causing morning and afternoon shading in winter.  My sad picture for the 5th ...

 

 

Capturegds.JPG

Those palm trees are robbing you of quite a bit twice a day. 🤔

On 2022/08/16 at 4:59 PM, Antonio de Sa said:

Here is mine I see we all had a bad day on the third of August.

2 growatt 5000 ES --- 12 X  410 Kw panels ---2 strings of 6 each

Not worried about cycle count LBSA batteries BMS has a stupid way of counting cycles.

image.thumb.png.4dbc21d74265758df5f586197cf6416a.png

Nice dashboard - I've updated one of my boring tables to include "Cell display mode"
Q1. How to you record Average Cloud Cover - do you have a weather station or something?
Q2. Where to do get the load shedding schedule?
Thanks in advance.

12 hours ago, system32 said:

Nice dashboard - I've updated one of my boring tables to include "Cell display mode"
Q1. How to you record Average Cloud Cover - do you have a weather station or something?
Q2. Where to do get the load shedding schedule?
Thanks in advance.

@system32 First let me tell you I am BC ( before computers ) All the info I get from my inverters and battery was programed and constructed by my son, he is a "boffin" in software programing ( I like to brag about it ) he got the Modbus protocol for the growatt and for Seplos, the BMS that LBSA uses in theyre battery. The info for the load shedding is pulled out from Eskom site and the cloud cover from some weather site. Herewith some of the info we get from the battery BMS.

image.thumb.png.4f55a23918db6fcb8c4fa20c43a81c5d.png

 

52 minutes ago, Antonio de Sa said:

@system32 First let me tell you I am BC ( before computers ) All the info I get from my inverters and battery was programed and constructed by my son, he is a "boffin" in software programing ( I like to brag about it ) he got the Modbus protocol for the growatt and for Seplos, the BMS that LBSA uses in theyre battery. The info for the load shedding is pulled out from Eskom site and the cloud cover from some weather site. Herewith some of the info we get from the battery BMS.

image.thumb.png.4f55a23918db6fcb8c4fa20c43a81c5d.png

Thanks for the feedback.
Grafana is a fantastic visualisation &  dashboarding tool - I often get ideas from other dashboards.

Edited by system32

On 2022/08/16 at 4:59 PM, Antonio de Sa said:

Here is mine I see we all had a bad day on the third of August.

2 growatt 5000 ES --- 12 X  410 Kw panels ---2 strings of 6 each

Not worried about cycle count LBSA batteries BMS has a stupid way of counting cycles.

image.thumb.png.4dbc21d74265758df5f586197cf6416a.png

Updated my dashboard with some of the ideas from your dashboard - thanks:
image.thumb.png.1baca6ac041129990df65c2dbed086e4.png
Cycles = Number of Load Shedding Events
4th Aug 2022 Load Shedding Cycles
   06:49 - 07:57
   14:01 - 15:52
   22:05 - 00:00 (actually 00:06)
5th Aug 2022 Load Shedding Cycles
   00:00 - 00:06
   12:06 - 14:01
   20:02 - 21:51

CoJ seems to have a timekeeping problem

Edited by system32

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