Climate policy portfolios that accelerate emission reductions

Theodoros Arvanitopoulos, Simon Bulian, Charlie Wilson, Andrew J Jordan, Jale Tosun and Nicholas Vasilakos

LSE Research Online Documents on Economics from London School of Economics and Political Science, LSE Library

Abstract: The corpus of national climate policies continues to grow - but to what effect? Using data on 3,917 policy instruments across 43 OECD countries and major emerging economies from 2000-2022, we show that national climate policy portfolios specializing in instrument types and sectors are associated with faster reductions in fossil CO2 emission intensity. Supported by exemplar country case studies, we also provide quantitative evidence that the effectiveness of climate policy is amplified by long-term emission reduction targets and the presence of dedicated governmental bodies including ministries and intergovernmental organisations. The cumulative effect of all climate policy portfolios over our study period amounts to 3.1 GtCO2 fewer emissions in 2022 relative to a no-policy counterfactual - substantially less than what's needed to stay on track for the Paris Agreement goals.

JEL-codes: H23 H50 Q54 Q56 Q58 (search for similar items in EconPapers)
Pages: 16 pages
Date: 2026-01-23
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Published in Nature Communications, 23, January, 2026, 17. ISSN: 2041-1723

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