FuzzyBullets

The reality is that Eskom is loosing this fight. They are the cause of there own demise.
As Greenfields is saying. There are solutions but it is not in Eskom's and municipality's favor. That is why they want to implement illogical ideas.
There revenue is slowly diminishing and they can feel it. It HURTS.
I personally use Eskom as little as possible.
Just go big enough to cut your reliance on Eskom to the minimum. By implementing load limiting they are also shooting themselves in the foot.
This is how much I need them.

Here is temperature speed controller for 4 pin pwm fans.
https://www.banggood.com/ZHIYU-DC-12V-24V-48V-2-Way-Cooling-PWM-4-Wire-Fan-Temperature-Controller-Temperature-Speed-Display-p-1162516.html?rmmds=myorder&cur_warehouse=CN
Will be doing the install when fans arrive. This controller can handle up to 3Amp. Will run your 4 fans.
 

Here is temperature speed controller for 4 pin pwm fans.
https://www.banggood.com/ZHIYU-DC-12V-24V-48V-2-Way-Cooling-PWM-4-Wire-Fan-Temperature-Controller-Temperature-Speed-Display-p-1162516.html?rmmds=myorder&cur_warehouse=CN
Will be doing the install when fans arrive. This controller can handle up to 3Amp. Will run your 4 fans.
 

The Bms charge limit changes depending on the batteries state of charge. The battery is at 100% so the BMS is telling the inverter that 0 Amps must be sent to the battery.
The same applies for when the battery gets down to maximum DOD. The discharge current limit from the BMS will reduce down to 0 Amps.

The 5 kw 48V inverter I installed in 2020. At that time there was not a lot of hybrid inverters available bigger than 5 kw. I was a complete noob when that project started.
I discovered the limitations of a 5 kw inverter and the 48V system during that year to power my whole house. 2 mppt inputs (6.5kw max). I was at maximum capacity on the solar panels and that could not be expanded further.
On the batteries, 8 x 2.4 kWh was technically the maximum as well. I could add more batteries but I was battling to get the 8  full during the winter months. Summer was not a problem.
Then we get to the 5 kw inverter. The house draws 1000W on average , then the wife "starts"  the deep fryer and the microwave and the inverter will restart due to overloading. That was annoying at times. We managed to get that under "control" LOL.
So my plan was to upgrade to the newly released 10kW inverter, ( 4 x mppt 15000W max) but I could not use my old battery system. The new inverter uses the HV batteries as mentioned above and faze the 5 kw inverter and 48V batteries out over time. 
PS Try to sell your old system (12 months old) and try and recover at least some of the cash outlay to purchase the new system. Not many people that has 100K lying around for a second hand system. 
So this year Feb I purchased the 10kW inverter and added the 10 panels and 5 batteries with level 2 BMS in May. I was not sure if it was going to work with 1 inverter supplying the second. I tried it and it works fine.
That is why I have both systems running currently. When the 8 x 48V batteries are down to 20% the 10 kw starts supplying the load. 
It actually works out nice. The 5 kw will supply its essential load up to 5 kw or the non essential side up to 5 kw. If more power is needed above 5 kw on the non essential side the 10 kw just supplements the rest.
Now I can expand the system if needed. 3 mppts open on the 10 kw and the high voltage batteries can be expanded up to 6 stacks. In my voltage range for the inverter I can have 9 x 3,55kWh batteries in series = 432V = 32kWh.
That can be expanded to 6 stacks of 32 kWh each.
It removed all the limitations that was frustrating me.
I hope that explains why 2 systems.
 

The 5 kw 48V inverter I installed in 2020. At that time there was not a lot of hybrid inverters available bigger than 5 kw. I was a complete noob when that project started.
I discovered the limitations of a 5 kw inverter and the 48V system during that year to power my whole house. 2 mppt inputs (6.5kw max). I was at maximum capacity on the solar panels and that could not be expanded further.
On the batteries, 8 x 2.4 kWh was technically the maximum as well. I could add more batteries but I was battling to get the 8  full during the winter months. Summer was not a problem.
Then we get to the 5 kw inverter. The house draws 1000W on average , then the wife "starts"  the deep fryer and the microwave and the inverter will restart due to overloading. That was annoying at times. We managed to get that under "control" LOL.
So my plan was to upgrade to the newly released 10kW inverter, ( 4 x mppt 15000W max) but I could not use my old battery system. The new inverter uses the HV batteries as mentioned above and faze the 5 kw inverter and 48V batteries out over time. 
PS Try to sell your old system (12 months old) and try and recover at least some of the cash outlay to purchase the new system. Not many people that has 100K lying around for a second hand system. 
So this year Feb I purchased the 10kW inverter and added the 10 panels and 5 batteries with level 2 BMS in May. I was not sure if it was going to work with 1 inverter supplying the second. I tried it and it works fine.
That is why I have both systems running currently. When the 8 x 48V batteries are down to 20% the 10 kw starts supplying the load. 
It actually works out nice. The 5 kw will supply its essential load up to 5 kw or the non essential side up to 5 kw. If more power is needed above 5 kw on the non essential side the 10 kw just supplements the rest.
Now I can expand the system if needed. 3 mppts open on the 10 kw and the high voltage batteries can be expanded up to 6 stacks. In my voltage range for the inverter I can have 9 x 3,55kWh batteries in series = 432V = 32kWh.
That can be expanded to 6 stacks of 32 kWh each.
It removed all the limitations that was frustrating me.
I hope that explains why 2 systems.
 

Another reason for the 5 kw Goodwe Es inverter was that it was passively cooled. No fan noise.

The 5 kw 48V inverter I installed in 2020. At that time there was not a lot of hybrid inverters available bigger than 5 kw. I was a complete noob when that project started.
I discovered the limitations of a 5 kw inverter and the 48V system during that year to power my whole house. 2 mppt inputs (6.5kw max). I was at maximum capacity on the solar panels and that could not be expanded further.
On the batteries, 8 x 2.4 kWh was technically the maximum as well. I could add more batteries but I was battling to get the 8  full during the winter months. Summer was not a problem.
Then we get to the 5 kw inverter. The house draws 1000W on average , then the wife "starts"  the deep fryer and the microwave and the inverter will restart due to overloading. That was annoying at times. We managed to get that under "control" LOL.
So my plan was to upgrade to the newly released 10kW inverter, ( 4 x mppt 15000W max) but I could not use my old battery system. The new inverter uses the HV batteries as mentioned above and faze the 5 kw inverter and 48V batteries out over time. 
PS Try to sell your old system (12 months old) and try and recover at least some of the cash outlay to purchase the new system. Not many people that has 100K lying around for a second hand system. 
So this year Feb I purchased the 10kW inverter and added the 10 panels and 5 batteries with level 2 BMS in May. I was not sure if it was going to work with 1 inverter supplying the second. I tried it and it works fine.
That is why I have both systems running currently. When the 8 x 48V batteries are down to 20% the 10 kw starts supplying the load. 
It actually works out nice. The 5 kw will supply its essential load up to 5 kw or the non essential side up to 5 kw. If more power is needed above 5 kw on the non essential side the 10 kw just supplements the rest.
Now I can expand the system if needed. 3 mppts open on the 10 kw and the high voltage batteries can be expanded up to 6 stacks. In my voltage range for the inverter I can have 9 x 3,55kWh batteries in series = 432V = 32kWh.
That can be expanded to 6 stacks of 32 kWh each.
It removed all the limitations that was frustrating me.
I hope that explains why 2 systems.
 

10 Kw Goodwe EHB inverter with 5 x Pylontech 3.55 kWh  Powercube High voltage batteries. 10 x 385W JA solar panels.
5 Kw Goodwe Es inverter with 8 x Dyness 2.4 kWh Low Voltage batteries. 20 x 340W JA Solar panels.
Only 10Kw inverter connected to the grid. Everything else is essential load to the 10kw inverter.
The inverters are technically in series.

Here is some technical specs on the inverter.
 

10 Kw Goodwe EHB inverter with 5 x Pylontech 3.55 kWh  Powercube High voltage batteries. 10 x 385W JA solar panels.
5 Kw Goodwe Es inverter with 8 x Dyness 2.4 kWh Low Voltage batteries. 20 x 340W JA Solar panels.
Only 10Kw inverter connected to the grid. Everything else is essential load to the 10kw inverter.
The inverters are technically in series.

10 Kw Goodwe EHB inverter with 5 x Pylontech 3.55 kWh  Powercube High voltage batteries. 10 x 385W JA solar panels.
5 Kw Goodwe Es inverter with 8 x Dyness 2.4 kWh Low Voltage batteries. 20 x 340W JA Solar panels.
Only 10Kw inverter connected to the grid. Everything else is essential load to the 10kw inverter.
The inverters are technically in series.