But, given how grave and urgent the situation is getting, there is no way to convert all curent energy generation to green energy AND increase energy generation capacity to keep up with normal economic growth AND increase it many times over to electrify all transportation AND electrify all heating. And even if we were to succeed in all that, that only covers about half of US emissions at best - the other half is coming from agriculture, industry and residential emissions. Not to mention the massive emissions that are happening in China but ultimately serving the US market.
It's simply not possible to achieve the necessary time frames (net 0 in 20 years) without significantly reducing economic activity and standards of living in the short term - then growing back to current activity and standards of living in the longer term.