yousuf2217

I thought I will add some thoughts after roughly a  month of being online.
 
In my case I am happy that I went with the 8kW inverter as well as the bigger battery 15/12.  Although the battery can't get us through the night "off-grid", it is getting close enough.  And it is within the levels that I require on my own calculations as to what Eskom usage saving I would like to get from the system.  I am yet to change over to gas cooking which is my next step and then a possible solution for the electric geyser in the future after that. 
 
Our daily usage for 2022 was average 68kWh per day, based on my calculations I wanted to get to 30kWh per day and with my last CoJ bill and some calculations it seems I am there.  This will however be confirmed during the next few months.
 
The one thing that I saw is that on the cloudy days the 7.6kW array produces 8.4kW roughly and peaks now and again at the limit set in the inverter of 9kW.  During these extremely hot days we experiencing during the last week or so, it peaks at 6.8kW which I then take as the heat soaking that I read about.  I generally get in the lower 40kWh production per day on fair days and have produced over 50kWh on a few days

Why are people still buying Hubble batteries?Seriously, some of the main installers/promoters of Hubble on this forum  have openly said they are not supporting them anymore after hundreds of batteries installed because of all the problems and lack of support . Do more research before you buy people . 
 

Sunsynk 8kw, 2 x 10kw Sunsynk Batteries and 16 545 Watt JA Solar Panels  

You are running Dyness batteries which are 80% DOD (you can run then down to 20% and not impact / affect warranty etc) so a discharge from 100-25% is within the manufacturer bounds. What's key though is understanding your home usage patterns. If you set your minimum to 25%, if the batteries reach 25% at 2 / 3am - is that enough to take you to 7 / 8 am for PV to take over? You also have 6000 cycles at an 80% DOD so at 1 cycle per day that's approx 15years before you should run into any capacity issues
What i have done is a stepped approach - so i allow mine to run down to:
75% before 9:45pm 65% before 11:45 20% before 5am - so if LS hits at 5am i have enough in the tank until 7am when PV is greater than load. This is based on knowing that if i have 65% at midnight i can make it to the morning