Hi Max,
I have solar and I can easily work out how much I pay for my power I use from the grid per year. For me to buy a battery for $10,000 it would take me 50 years just to get my money back and this will not save me 1 cent and I can assure you the battery will probably need replacing at least 5 times in that period so my $10,000 investment will have cost me $50,000 and at my current cost of power it will take me 250 years to get my money back with no interest paid. A very dud investment, the batteries at this stage are a total con