That's frustrating. Doing without the grid makes things more complicated. What consumes the most power in your place? We average around 10kWh per day, but have gas heating and no a/c. So our 10kWh battery can generally keep us going if I charge it up on cheap rate when there is not much sun. Some recent days only got us 1kWh of solar. It is very different in summer when we hardly need the grid.
I would guess the air con would consume the most power and we have 4 of those almost running 24 hours. During the day it is fine as everything we need is powered by direct solar. The one battery they are reconfiguring which will bring us back to 20 kwh storage and I think we would need 30 kwh to get through the night time before it can charge again which is actually the quick part here. The geyser/boiler is going off it's own independent solar kit once it is installed and we are busy waiting for that to happen. I think even during winter and overcast days we will be running the entire day with no problems. I still see some benefit staying with the grid even though I am in a position if required to move off completely by upgrading the current system.
Solar and a/c ought to always go together. The savings could be huge.
Yes that is true and I am now hunting for energy efficient a/c because somehow I think ours are chewing too much power. That is the next step finding what is using what and replacing those items. I know I have some security spot lights that have blown through continuous power cuts and I believe somehow they are still consuming power.