Forums

Search with Wattson
Forums
Sustainable Sidetra...
Solar Photovoltaic ...
Solar Power Output ...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

[Sticky] Solar Power Output – Let’s Compare Generation Figures

 
Page 25 / 28
Solar Photovoltaic (PV)
Last Post by Toodles 2 weeks ago
335 Posts
37 Users
139 Reactions
47 K Views
RSS
MK4
 MK4
(@mk4)
Trusted Member Member
Joined: 3 months ago
Posts: 69
01/03/2026 4:50 pm  

Posted by: @toodles
↑

@mk4 Sorry, I hope my green hue is not offending you.🤢 Toodles.

????

you’ve lost me here…

 



   
ReplyQuote
Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2711
01/03/2026 4:55 pm  

@mk4 I’m green with envy - more than twice my February solar production; may I enquire the capacity of your solar array please? Regards, Toodles.


This post was modified 2 months ago by Toodles

Toodles, heats his home with cold draughts and cooks food with magnets.


   
ReplyQuote
MK4
 MK4
(@mk4)
Trusted Member Member
Joined: 3 months ago
Posts: 69
01/03/2026 5:07 pm  

@toodles 

OK, sorry I didn’t get it…. we have almost 8kwp, half of them facing S/SE and half N/NW

I guess you know though that the grass is always greener on the other side!

We may have had a nice energy yield but we are facing a draught… last December, Athens was declared in a state of emergency as the water reserves level had dropped to 40% of what it should normally be. Fortunately we had a lot of rain in January and February plus some snow and the situation has improved.


This post was modified 2 months ago by MK4

   
ReplyQuote



Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2711
01/03/2026 5:27 pm  

@mk4 We have 8.1 kWp. but less than ideally orientated with some degree of shading at times. As to the rain, well …. we seem to have had our fair share lately! (SE England) Regards,Toodles.


This post was modified 2 months ago by Toodles

Toodles, heats his home with cold draughts and cooks food with magnets.


   
ReplyQuote
 JohnnyB
(@johnnyb)
Estimable Member Member
Joined: 1 year ago
Posts: 114
01/03/2026 10:55 pm  

It's my first year with solar on the current house so no precise years to compare it with. It has been a very wet February with most days seeming to be cloudy and not much solar so I was surprised to see we have generated over 200kWh, very similar to Toddles figure.

Screenshot 20260301 214829


   
ReplyQuote
MK4
 MK4
(@mk4)
Trusted Member Member
Joined: 3 months ago
Posts: 69
02/03/2026 10:00 am  

Posted by: @toodles
↑

@mk4 We have 8.1 kWp. but less than ideally orientated with some degree of shading at times. As to the rain, well …. we seem to have had our fair share lately! (SE England) Regards,Toodles.

If your inverter can support two strings, perhaps you could have all the shaded panels in one string and the ones that are never shaded in another. We did this with our panels, the ones placed W/NW do not get much light during winter but they thrive in the summer, so we have them in a separate string.

BTW, I love your trailing signature, I’ve meaning to tell you for some time, but only after our last interaction did I get its full meaning. I guess humor is not my strongest of points….

 



   
ReplyQuote



Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2711
02/03/2026 10:17 am  

@mk4 All 21 panels have their own Enphase IQ7a microinverter and these are sent as two arrays to the Tesla Gateway. 5 on house roof, 4 on flat roof, 2 on workshop roof and 10 mounted in the garden. Glad you like my sig. line😊. Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
ReplyQuote
 Papahuhu
(@papahuhu)
Reputable Member Member
Joined: 9 months ago
Posts: 252
12/03/2026 3:05 pm  

@toodles 

Just checking with you. Did your batteries dump all their charge in the small hours of this morning please and then didn’t recharge until the cosy cheap rate starting at 13.00? Mine did, for no good reason I can find. In the past there was an occasional battery calibration event, but I think I can remember being informed somehow when this was the case. Very odd.

I’ve also noticed they fully discharged, to 0%, rather than the 5% minimum charge level I set. I guess that suggests a recalibration. 


This post was modified 1 month ago by Papahuhu

   
ReplyQuote
Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2711
12/03/2026 4:02 pm  

@papahuhu Hello, err… no, I still saw some 32% or so battery capacity left this morning but, I had set my system to prioritise the solar supply yesterday morning as we have had several days of charging from the grid only to then send solar generated energy back to the grid later in the day! I have never seen any ‘recalibration’ messages or evidence of a full discharge that I had not set up myself. Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
ReplyQuote



 Papahuhu
(@papahuhu)
Reputable Member Member
Joined: 9 months ago
Posts: 252
12/03/2026 5:02 pm  

@toodles

This is it, but I never saw any banner. Maybe PW2 didn’t do it, isn’t the battery chemistry different if I remember.

Powerwall 3 Calibration

Powerwall 3 periodically calibrates to ensure optimal battery performance. Calibration ensures that your Powerwall 3 continues to operate accurately and efficiently for your home.

Note: The calibration process is normal and is not an indication of any issues with your Powerwall 3.

When Will Calibration Happen

Due to normal cycling of the battery during daily use, calibration can occur naturally and will have no impact on your system’s operation. However, if daily cycling is not sufficient, the system will undergo a dedicated calibration cycle every 30-90 days.

How to Know When Calibration Is in Progress

When your Powerwall 3 is undergoing calibration, you will see a ‘Calibration in Progress’ banner in the Tesla app. This banner will remain visible until the process is complete.



   
ReplyQuote
Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2711
12/03/2026 5:08 pm  

@papahuhu I think this is just a PW3 innovation then. Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
ReplyQuote
TechnoGeek
 TechnoGeek
(@technogeek)
Estimable Member Member
Joined: 3 years ago
Posts: 174
12/03/2026 5:17 pm  

@papahuhu

Posted by: @papahuhu
↑

I’ve also noticed they fully discharged, to 0%, rather than the 5% minimum charge level I set. I guess that suggests a recalibration. 

It looks like a battery calibration operation to me. When my system (GivEnergy) does a battery calibration the reserve value of 4% in my case is ignored and the battery is drained to zero before doing a 100% charge.

Regards


This post was modified 1 month ago by TechnoGeek

5 Bedroom House in Cambridgeshire, double glazing, 300mm loft insulation and cavity wall insulation
Design temperature 21C @ OAT -2C = 10.2Kw heat loss, deltaT = 8 degrees
Bivalent system containing:
12Kw Samsung High Temperature Quiet (Gen 6) heat pump
26Kw Grant Blue Flame Oil Boiler
4.1Kw Solar Panel Array
34Kwh GivEnergy Stackable Battery System


   
ReplyQuote



Page 25 / 28
Forum Jump:
  Previous Topic
Next Topic  
Related Topics
Topic Tags:  solar PV (10) , solar production (3) ,



Share:

Join Us!

Worth Watching

Latest Posts

Members Online

Click to access the login or register cheese
x Powerful Protection for WordPress, from Shield Security PRO
This Site Is Protected By
Shield Security PRO →