Got an existing 8 panel PV system on our roof and we also get "100% Green Power" from our electricity distributor.
However, I somehow do not trust their energy accounting and would much prefer a more direct solar energy supply.
Unfortunately, we have no more suitable space on the roof, so I am looking into investing in various "Community Renewable Energy" projects between now and when I take delivery of the Tesla to cover both the actual household consumption as well as future Tesla 3 requirements.
It is surprising but I have not been able to find any reputable "Managed Investment Schemes" type solar farms, where you can buy a few panels within a larger project. I thought by now a Macquarie Bank would have rolled out something like that.