The NET Effect: Negative Emissions Technologies and the Need-Efficiency Trade-off

Non-technical summary When developing and deploying negative emissions technologies (NETs), little attention has been paid to where. On the one hand, might develop NETs where they are likely contribute most global mitigation targets, contributing a climate solution. other can help support development on regional basis, justified by demands. I defend these arguments suggest that reflect values of efficiency responding need, respectively. To extent conflict, introduce what call Need-Efficiency Trade-off Effect (‘NET Effect’). Technical Unlike geoengineering methods, effectiveness (NETs) tends be sensitive siting. This paper argues this point raises morally legally important implications identifying trade-off between ‘efficiency’ ‘need’. First, it introduces two justifying NETs: focused contributions development. Second, reflecting arguments, discusses moral For instance, if strategy is try use maximize expected efficiency, then deployment should occur in regions with best prospects for success (e.g. Western countries). However, improve chances simultaneous respond limited growth demand Asian The concludes considering NET context bioenergy carbon capture storage as well direct air storage. Social media Should deployed countries action or needed development?