I’m looking into this currently with Tesla directly. Going through initial site survey with them. My goal was to preemptively invest ahead of the peak TOU hour changes. I currently have solar along with EV, and we’re just about a wash end of the year for settle-up. With the TOU changes, that will no longer be the case as my PV production is no longer leveraged by producing at peak rates.
In regards to batts, SGIP incentives are practically no longer available. If getting this with solar, or adding it along with existing solar as is my case, the federal ~30% tax incentive still applies.
The cost is still significant and ROI is much longer than I would like.
I’m considering steering my investment back to adding more solar. And making the add on west facing to align with the new TOU peak hours. I believe this would net much better ROI than a battery could.