Comparing Leading Carbon Dioxide Removal Technologies

Abstract: The most recent Intergovernmental Panel on Climate Change report shows that we will need several gigatons of carbon dioxide removal annually to avoid the worst impacts of climate change. A nascent but rapidly growing private sector is attempting to meet that demand. These companies are deploying a myriad of technologies that capture and store carbon in unique pathways, with their own benefits and tradeoffs. I will discuss these tradeoffs, with an eye to scaling from todays tens of kilotons of removals to the needed gigaton scale.