You can do this if you use an approved third party installer. I just installed a large solar array with non-Tesla panels but using two of the latest Powerwalls as inverter and storage
Yes, that's the only possibility right?
In case you wanted a serious answer and not just an internet reaction: our utility offered substantial rebates on Powerwalls specifically.
Unfortunate for this particular product (i do not like tesla anymore), i also never heard anything about it after that one Musk presentation infront of a house with tesla roof.
But if your ecosystem is Tesla (before Musk), the synergy would definitly be very nice.
'Just because' lucky enough some people do not mind investing money into beauty.