Green energy is a noble idea but unless we create large scale fusion or learn to manipulate gravity it won't ever happen. It's worth investing in but it will take a lot of time.
As a stop gap though nuclear energy is our best option but it will take decades just to build the infrastructure for it and tie it all together and another decade or more to start transitioning everything to it.
But no one wants long term, they want right now. California and Biden and so on want green energy are acting like a guy that is building a house and they are standing there with a bucket of paint and a wet paint roller saying they want to paint the walls when the foundation hasn't even been poured yet.
And the rhetoric of "saving our planet" is a bit short sighted. Everything we consider to be climate change and so on has happened before to this planet millions of years before we ever came a long. Earth has had a total reversal of the poles, world wide floods, world wide droughts, world wide fires, ice ages, loss and gain of the ozone layer, seismic activity so great it broke apart land masses and a whole lot more for billions of years. We ignore those facts for catchphrases and slogans and half truth science. Earth is not static, never has been.
We still have the fossil fuels to run for a thousand more years, more than enough to carry us into a transition away from them but it won't happen over night. It will take 25 or 30 years.