No, you can't precisely measure how exactly green Bitcoin mining is and all this eco talk is just commercial for Elon kissing asses for carbon credits and globalist agenda.
All you can find is approximate amount of miners that are using power coming from hydro plants and that is not an easy task, especially measuring percentages.
You could measure how many households are mining Bitcoin by comparing it to the average household but the only problem is the governments are the only ones with that information and they are only going to release information which makes Bitcoin look bad. If you think about it going green and keeping energy costs down are within the best interests of miners. It is not like the miners are choosing to pollute the earth its that green energy is expensive to invest in and you do not benefit from it until later in life. A solar panel costs more than $20k to take over a average household but it takes 20+ years to benefit from it. It is not worth it yet and that is what needs to be addressed and not targeting consumers who use electricity to power their miners.
What's wrong with accepting bitcoin and promoting green energy at the same time, I think Tesla is just making an excuse, they are using their influence to hype bitcoin for their personal interest and not really to associate Tesla with crypto or bitcoin. Their founder is very deceiving, so can we still trust his words?
I mean, he promoted Doge which generates a lot of hype, so what happens to the investors now? Their money are stucked and it's just a matter of time before they will dump because they are tired of waiting.