I also considered that on the face of it, this option might me good for me and indeed other builders here. So I sent an enquiry to Tesla to check it out and get the options re area, storage, etc. That was at the start of the year. I am still awaiting the response and answers. Not so good for the so-say leader in revolutionising how we see and tap into solar and renewable energy.
That said, my own research covering purchasing and that installation suggests a very many multi year pay back. Not the quick or even medium term fix I was hoping for, but maybe things have changed? What's the latest anyone found with regards to the total costs of the installation against the savings it can bring"