Marginal CO2 Abatement Cost Curve for the US

So, I turned the graph 90 degrees and replaced tonnes of abatement by percent and got this:The percentage is emissions relative to business as usual. i.e. 100% means there is no abatement. 0% means there is 100% abatement. Yes, some models end up with negative emissions. And these are just fossil-fuel/industrial emissions of CO2. They assume that we will be burning biomass and sequestrating the