The article, co-authored by Grischa Perino and Arthur van Benthem, was published in the October 2025 issue of The Economic Journal.
We hope our research can serve as a useful real-time input for policymakers globally as they develop climate policy portfolios.
Dr Ritz said: “I am thrilled to have been awarded the Royal Economic Society Prize. ‘Overlapping Climate Policies’ gives policymakers and researchers a framework to estimate how climate policies like renewable subsidies or fossil phase-outs interact with a carbon price. Thank you to my co-authors Grischa Perino and Arthur van Benthem for many years of work. We hope our research can serve as a useful real-time input for policymakers globally as they develop climate policy portfolios.”
Transforming research into real‑world climate strategy
Originally developed as EPRG Working Paper 2034 in 2020, the research has evolved into a widely recognised contribution to climate policy design. It offers policymakers a valuable framework for navigating increasingly complex policy mixes in the transition to net zero.
The RES Prize Committee was struck by the relevance of the analysis, which provides a powerful tool for policymakers to gauge climate effectiveness.
The Royal Economic Society said: “The RES Prize Committee was struck by the relevance of the analysis, which provides a powerful tool for policymakers to gauge climate effectiveness. The analysis creatively demonstrates how certain demand-side policies can be complementary while other interventions may inadvertently backfire, effectively opening vital new research questions for the design of global climate portfolios.”
The winners will receive the Prize at the annual Royal Economic Society Conference, taking place this year at Newcastle University.
Featured research
Perino, G., Ritz, R.A. and van Benthem, A.A. (2026) “Overlapping climate policies.” The Economic Journal, 135(671): 2122-2160 (DOI: 10.1093/ej/ueaf021)
Related content
“2025 Royal Economic Society Prize winners announced.” Royal Economic Society, 11 March 2026
Related articles
Faculty news
Global energy markets hold the key to climate action
As the world races to decarbonise, competing pressures – from AI-driven energy demand to geopolitical fragmentation – are complicating the transition. Michael Pollitt, Professor of Business Economics at Cambridge Judge Business School, argues that the answer isn't energy nationalism, but deeper global cooperation. In a wide-ranging interview, he explains why international trade, cross-border carbon markets, and smarter grid technology are the tools that will ultimately determine whether the world meets its climate goals.
Research centre news
Tariff strategy could drive small EV adoption
In 2024, the US and the European Commission both raised tariffs on electric vehicles (EVs), which could slow adoption. To counteract those concerns, new research from academics across 4 countries urges policymakers to adjust EV import tariffs based on vehicle size to accelerate global clean transport adoption.
Research centre news
White House report cites study on carbon removal technologies
The 2025 Economic Report of the President submitted to the US Congress cites research from the Energy Policy Research Group based at Cambridge Judge Business School on cost and scalability of carbon capture and storage.