How does this court ruling slow down renewable around the world? Renewable and solar are happening around the world because of price and there is nothing that can change this direction, short of a war with China.

Specifically, Swanson's Law [0] that says the more solar we make, the cheaper it gets.

The price of renewables is also being driven down because we're getting better at making them. So it's a virtuous cycle; the more we make, the cheaper it gets, and the cheaper it gets, the more demand there is, so the more we make.

If the USA is not demanding renewables, the effect is less and we don't get as good at making them

[0] https://en.wikipedia.org/wiki/Swanson%27s_law