This fourth edition of Effective Carbon Rates provides an overview of the carbon pricing landscape, examining fuel excise taxes, carbon taxes, and emissions trading systems (ETSs) through 2021, with updates on developments until 2023.

This report presents the first full analysis of the use of carbon pricing on energy in 41 OECD and G20 economies, covering 80% of global energy use and of CO2 emissions.

Accelerating the transition to net zero greenhouse gas (GHG) emissions is urgently required to contain the risks of climate change. As countries seek to reduce GHG emissions, they can employ or reform a wide range of policy instruments. This report tracks how explicit carbon prices, energy taxes and subsidies have evolved between 2018 and 2021.

Carbon pricing very effectively encourages the shift of production and consumption choices towards low and zero carbon options that is required to limit climate change. Are countries using this tool to its full potential? This report measures the pricing of CO2-emissions from energy use in 44 OECD and G20 countries, covering around 80% of world emissions.

Decarbonisation keeps climate change in check and contributes to cleaner air and water. Countries can price CO2-emissions to decarbonise their economies and steer them along a carbon-neutral growth path. Are countries using this tool to its full potential?

This publication synthesises a number of case studies of effective carbon prices in selected countries and sectors.

This book offers an extensive analysis of carbon-energy taxation that addresses the interplay between carbon-energy taxation and emissions trading, as well as the implications for future international climate policy.