EnPhase makes a very interesting battery. A client of mine in Australia is uses these to load shift.
https://enphase.com/en-us/products-a...age/our-system
Very easy to set up and a lot of ability to control where excess PV energy goes and at what cost. The Australia farm first fills up batteries and then sells excess power to utilities. They then can sell excess kWhrs at peak time back to the utility - or save it for on farm use.
All controlled by smart phone . . . .
Tesla is no where close on performance, cost or utility. But BIG on publicity.
Steve