Hey
I currently have a 11.1kWh system on our house in NSW Australia, utilising 30x Enphase IQ7PLUS-72-2-INT inverters. Currently, this system is set up to provide power during the day when required and export the excess PV to the grid.
The majority of our power demands are at night so we are looking at battery storage. We are looking at a 48v 14.3kWh battery and would like the following to happen:
- PV provides power for the house when sun is out
- Excess PV is used to charge battery up to 100%
- Once PV is unable to sustain house requirements, Battery is used for power consumption in the house until it reaches 10%.
- At 10%, the grid takes over and provides power.
- If power demands exceed the Inverter/charger limits, grid assist with power (e.g. 6.5kW load, 5kW from inverter and 1.5kW from grid)
If you could please recommend an inverter/charger for this, It would be greatly appreciated.
I was thinking the Multiplus-II 48/5000 if that would work, as well as a GX device for monitoring. I believe I will also require a current sensor with the Multiplus.
Thanks in advance for your assistance.