[furgooswft13]

> wouldn't it be better to go after the demand for energy from fossil fuels, instead of supply? I wonder if there has ever been a large scale attempt at this

There has been, it's called the "global pandemic". The world will never find a better way to attack demand for energy consumption in such a short period. And you did not even notice. Your post would have fit perfectly well in HN circa 2019.

> What unprecedented measures could be taken to stop climate change?

Easy. Stop talking about it. Unthinkable I know. But I guarantee you life would go on and we'd all find other things to overreact to. Just like the "pandemic".