Solar battery and basic electrical

I have reached out to about 6 different solar companies in Canberra and found climate plus to be the most personable and professional. I was taking to Bob at climate plus and he was able to hear what I wanted and my idea of price and was able to get me a three phase 15 kw inverter with nearly 20kw worth of batteries for $17,500 installed. I do not have before and after pictures as this was done on a rental property and I would like to respect the tenants privacy.