Hi everyone,
I'd like to get some feedback on the following.
I currently have the following setup:
- 3kW Multiplus II
- 3kW Fronius Primo connected to the ACout of the MPII
- 9kWh AGM battery bank
- Grid tied system with the ability to export electricity
This system works great in a grid down scenario where the PV array continues to provide power to the Multiplus II.
I like the simplicity of the setup and am looking at upgrading the system to an 8kW system (both for the Multiplus and Fronius Primo due to the 1:1 rule). I would also be upgrading the battery bank to 18kWh AGM's. The Fronius Primo would be the following model: https://www.springers.com.au/shop/product/primo8-2-1-fronius-primo-8-2-solar-inverter-1437
Question: should I be concerned that this type of setup is too big and should this only be suitable for the smaller setup that I have? I.e. would the Primo be able to throttle back sufficiently if there is only a very small AC load and the batteries are already at 100%? Your thoughts on the battery bank capacity would also be appreciated.
Any other thoughts and comments are also welcome.
Thanks