Renewables is the only realistic path to energy independence. Today's global situation should show the absolute necessity of that, even if you dont give a sh*t about the environment.
Had we done more 10 years ago we would have been better of. The second best time to start is now.
(We used to build it at a fraction of the cost and less than half of the time that we do with our modern fuckups and fuel can come from just about anywhere if need be. It might be a lot more expensive than the stuff kazachstan and still be a fraction of the cost.)
I think ideally we would've done both to press the cost of nuclear down and given the fact that the renewables rollout turned out to be a lot lot more expensive than proponents claimed it would be whilst still tying us up into gass to cover winter.
When reading an article written by Bjorn Lomborg, you should also do the effort to read the cited sources. This is not an ad hominem attack, just an observation. Do it and you will see.
It does not. That is not economically mined. Last big hard coal producer in EU - Poland, has extraction cost x2 or x3 of the mountain top removal mining in US. This sector is shrinking rapidly. Poland coal production came back to ~1915 levels (taking into account current PL territory). This sector would be closed already if not for massive subsidies.
Last year, China's coal use decreased, while China installed 300x more renewables than nuclear. Coal and nuclear aren't cost competitive with renewables, either in a free market or a technocratic top-down economy. Coal and gas still maintain a valid niche of firming intermittency. But that niche is temporary and shrinking.
The free market installs a tiny amount of coal, and a lot of renewable energy. Whether you believe this means "coal is/isn't cost competitive with renewables in a free market" is a debate about word definitions that I'm not terribly interested in.
China, like Brussels, is trying to reduce coal for similar reasons. They don't like the air pollution health hazard (fully believable), and they say they don't like global warming (somewhat believable).
Had we done more 10 years ago we would have been better of. The second best time to start is now.