Governing Climate Geoengineering: Side-Payments Are Not Enough

Governing Climate Geoengineering: Side-Payments Are Not Enough

Abatayo A.L., Bosetti V., Casari M., Tavoni M., Ghidoni R., (2021), Governing Climate Geoengineering: Side-Payments Are Not Enough, RFF Working Papers Series, 21-06, March 2021, webpage

Abstract

Climate geoengineering strategies can help reduce the economic and ecological impacts of global warming. However, governing geoengineering is challenging: since climate preferences vary across countries, excessive deployment relative to the socially optimal level is likely. Through a laboratory experiment on a public good-or-bad game, we study whether side-payments can address this governance problem. While theoretically effective, our experimental results show only a modest impact of side-payments on outcomes, especially in a multilateral setup. Replacing unstructured bilateral exchanges with a treaty framework simplifies the action space and performs moderately better.

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