IMF Working Papers

Can International Technological Diffusion Substitute for Coordinated Global Policies to Mitigate Climate Change?

By Philip Barrett

June 25, 2021

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Format: Chicago

Philip Barrett. Can International Technological Diffusion Substitute for Coordinated Global Policies to Mitigate Climate Change?, (USA: International Monetary Fund, 2021) accessed October 13, 2024

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Summary

In short, yes. I use a multi-region integrated assessment model with fuel-specific endogenous technical change to examine the impact of Europe and China reducing emissions to zero by mid-century. Without international technological diffusion this is insufficient to avoid catastrophic climate change. But when innovation can diffuse overseas, long-run temperature increases are limited to 3 degrees. This occurs because policy not only encourages green innovations but also dissuades dirty innovations which would otherwise spread. The most effective policy package in emissions-reducing regions is a research subsidy funded by a carbon tax, driven in the short term by the direct effect of the carbon tax on the composition of energy, and later by innovation induced by research subsidies. Green production subsidies are ineffective because they undermine incentives for innovation.

Subject: Carbon tax, Climate policy, Environment, Financial sector policy and analysis, Greenhouse gas emissions, Spillovers, Taxes

Keywords: Carbon tax, Climate policy, Energy-producing firm, Europe, Global, Green production subsidy, Greenhouse gas emissions, Package in emissions-reducing region, Policy package, Research subsidy, Spillovers

Publication Details

  • Pages:

    76

  • Volume:

    ---

  • DOI:

    ---

  • Issue:

    ---

  • Series:

    Working Paper No. 2021/173

  • Stock No:

    WPIEA2021173

  • ISBN:

    9781513585765

  • ISSN:

    1018-5941