we had our powerwall 2 installed just before Christmas and so far we are blown away. Over the last few weeks we have been 80% indepedant of the grid despite us having record hot spells and using AC. We live in Sydney and already had a 5kw solar system. Australian energy prices are some of the highest in the world based on what we’ve seen the PW2 should pay for itself in around three years. The app is great but it will be improved I hear. It’s such a huge change that I think it will spawn it’s own eco system of compatible appliances and algorithms. Be interested to swap tips with other Powerwall users.