Solar water pumping

Solar water pumping has been used for a number of years around the world. Typically it involves a few PV panels and a small DC low voltage pump directly connected. Water flow is normally not spectacular and the low voltage requires thick expensive cables.
Enter 3 Phase AC high voltage systems which are suddenly seeing a lot of attention........
The video shows an "UBER" pumping system we are playing with at the moment. 400V of DC from 2.3kW of PV driving a 2kW submersible pump via a 3 phase inverter/controller.
Performance is really impressive with about 16000 litres per hour (at zero head). We predict 11000 litres per hour at 20m head. The system is scale-able and could easily be sized up to run large centre pivot irrigation systems. In our case we are going to use it for a pumped hydro storage experiment amongst others.

Picture below shows the 2.3kW PV array ready for action!