totally agreeIt depends on your Net metering plan. When you push excess Solar to the Grid and then pull it back later, that typically is not free. I lose 20% with my plan. Power Walls should be 92% efficient. So you save 8% doing your own storage. In my case Power Wall is not worth it. Especially if my Solar produces 20% more than I use annually I can afford that loss so Power Wall would gain me nothing. Money wise. Power Wall only makes sense if helps you shift grid load to off peak rates. And way over priced for backup IMHO.