The presentation says that the micro grid will be capable of producing 150,000 litres per day (or 54,754,000 litres per year) of freshwater.
Kwinana Desalination plant produces 45 billion litres of freshwater per year.
If CWEs figures are right, that seems extraordinary to be able to produce just over 10% of the giant Kwinana plant's output, from such a small array.
The Kwinana plant requires 180 GWh/year of electricity to run the plant.
http://www.watercorporation.com.au/...esalination/perth-seawater-desalination-plant