As you reduce the amount of carbon emissions (the y axis) the methods to keep reducing carbon cost more (the x axis.)
This great graph came to my attention from this video from vlogbrothers. It also has some good explanations of what it means.
Note that carbon capture doesn’t really make sense till you’ve exhausted all the other emission minimizing methods.
Source: https://www.edf.org/revamped-cost-curve-reaching-net-zero-emissions
The video explains it pretty well. It’s very information dense. But it’s how much it costs to minimize carbon emissions by various methods depending on how many giga tones co2 we are currently emitting.
Just, from a data is beautiful perspective, if I have to watch a video to understand one of your figures; that ain’t beautiful.
Its actually not a super complicated figure, the point its making is just obfuscated by its presentation.