Quote Originally Posted by Isetech View Post
The next test will be the Sunsynk inverter, now we talking closer to R50 k for a basic backup system. 4 batteries with a 48 VDC system. Now we talking cost to connect the system to the electrical installation according to all the regs.

There must be cheaper smarter options to keep the lights on.
Don't waste your time if you going to use Lead Acid with the SunSynk. Lithium is the way to go.
If you have PV panels as part of the system, then the SunSynk used the battery at some point after the sun goes down and used up to 30% of the battery capacity to provide power to your load. Once this point is reached, it changes ovwer to mains, and will recharge the battery the next morning via solar. This where part of the saving comes in, especially the hybrid side, and the sun is shinning. I have had many days that I do not use ESKOM from around 08H00 to about 18H00 with my Deye (Sunsynk equivalent), thats a saving of about 17Kw, only because I have 2.6Kw of PV panels.