Green market (environmentally friendly, not weed) for long term investing.

It's not a secret that at some point the energy market will eventually make a large pivot to green energy.
The EV market is up and down quite a bit. It's strange that with the coming regulation that it wouldn't be booming still.
I'm looking for some long term investment ideas into long term green companies. I'm fond of the hydrogen fuel cell market because I think that will eventually replace li-on batteries. Might be a pipe dream, but it makes sense to me.
I'm not looking at solely small companies, but not opposed to ones that have positive long term potential.