@TechReport{iza:izadps:dp18110, author={Gries, Thomas and Naudé, Wim}, title={Economics for a Safe Operating Space: A Green-Growth-Degrowth Model}, year={2025}, month={Sep}, institution={Institute of Labor Economics (IZA)}, address={Bonn}, type={IZA Discussion Paper}, number={18110}, url={https://www.iza.org/index.php/publications/dp18110}, abstract={We present a model of economic growth that bridges Green Growth and Degrowth perspectives. The model demonstrates that a minimum physical per capita consumption level can be maintained without recourse to tech-optimism, and moreover with degrowth in material resource throughput - respecting planetary boundaries. We critically discuss the assumptions necessary for this result, explore relaxing these, and illustrate that eventually a full transition to renewable energy and materials will be needed to sustain consumption levels in a post-growth economy. We identify areas for future growth modelling, emphasising that these require genuine interdisciplinary cooperation.}, keywords={post-growth;degrowth;economic growth;green growth;sustainability}, }