Global fuel standards are pushing the dirtiest oil out of the market
I kinda like this variation on a carbon tax that California has. It sets a credit for energy sources with carbon intensity below a target and debt above the target.
For example, the carbon intensity of crude varies 4-fold by source. So this scheme makes higher carbon intensity fuels more expensive pricing them out of the market.
While no carbon tax is an end-all for fighting climate change, I think it can have a valuable influence to make sure that as the world reduces fossil fuel consumption, it is beneficial to cut production of the higher carbon intensity first. For example, when we reduce demand by 5%, it is best if we cut the crude that is 3 time more carbon intense than average. This would have an effect of cutting emissions 15% while only cutting production 5%.
So I'd like to see the Biden Administration consider nationalizing something like the California plan.