7.2 Negative Emissions Technologies and Direct Air Capture (Ch. 29)

Given the U.S. economy’s continuing reliance on fossil fuel energy sources and the high levels of anthropogenic GHGs already in the atmosphere, a full deep decarbonization pathway assessment will have to explore the use of negative emissions technologies (NETs), which include the direct air capture (DAC) of ambient CO2. NETs are technologies that capture or consume more CO2 than they emit on a cumulative basis, and DAC, loosely defined, is a subset of NETs that use any industrialized chemical or physical methods to remove GHGs from the ambient atmosphere and then store or reuse those gases typically in a way that does not allow them to escape back into the atmosphere. While still nascent, NETs include a wide array of approaches such as biomass energy with CCS, enhanced weathering of minerals, and the direct mechanical capture of ambient CO2 through filters and chemicals. The chapter focuses on the legal pathways needed to accelerate the development and use of NETs and assure their proper governance.

The Sabin Center for Climate Change Law has created a comprehensive annotated bibliography of legal materials concerning carbon dioxide removal and carbon capture and sequestration.

Please visit CDRLaw.org.

The Sabin Center for Climate Change Law has created a comprehensive annotated bibliography of legal materials concerning carbon dioxide removal and carbon capture and sequestration.

Please visit CDRLaw.org.