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.

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.

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?

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.

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 report measures carbon pricing of CO2-emissions from energy use in 42 OECD and G20 countries, covering 80% of world emissions. The analysis takes a comprehensive view of carbon prices, including specific taxes on energy use, carbon taxes and tradable emission permit prices. The ‘carbon pricing gap’ measures how much the 42 countries, together as well as individually, fall short of pricing emissions in line with levels needed for decarbonisation. On aggregate, the ‘carbon pricing gap’ indicates how advanced the 42 countries are with the implementation of market-based tools to decarbonise their economies. At the country level, the gap can be seen as an indicator of long-run competitiveness.

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. The analysis takes a comprehensive view of carbon prices, including fuel excise taxes, carbon taxes and tradable emission permit prices. The "carbon pricing score" measures how close the 44 countries, together as well as individually, are to the goal of pricing all energy related carbon emissions at current and forward-looking benchmark values for carbon costs. The report highlights the structure of effective carbon rates across countries and sectors in 2018 and discusses change compared to 2012 and 2015. It also provides an outlook on recent trends in emissions trading in China and the European Union

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

When taxes are introduced on carbon and energy, and the revenue is used to reduce other taxes, will a positive effect be achieved both for the environment and for the economy? In 1990 Finland was the first country to introduce a tax on CO2. Later, Sweden, Denmark, Netherlands, Slovenia, Germany and the UK followed suit with tax reforms that shifted taxation from labour to carbon and energy. Over the years, CO2 and energy taxes have gradually been raised, so that in Europe taxes of more than 25 billion Euros a year have been shifted. This book examines carbon-energy taxation in detail and looks at tax shifting programmes for lowering other taxes. It offers extensive analysis on the basis of historical data and seeks to answer important questions for policy-making, such as: What was the impact of tax shifting for economic performance and competitiveness? By how much were emissions of CO2 reduced? Could energy-intensive industries cut further down on their fuel demand or did they loose market shares? To what extent was there 'leakage' from Europe, so that production and CO2 emissions were shifted to other countries or regions without CO2-abatement policy? The use of unique and original data, including sector-specific energy prices and taxes, as well as the use of advanced statistical techniques, such as co-integration analysis and panel-regression techniques along with the time-series estimated macro-economic model E3ME, make this a truly comprehensive volume. On the basis of the lessons learned in Europe, this volume indicates how carbon-energy taxation could usefully be combined with emissions trading, and discusses implications for future international climate policy, including how the IPCC recommendations for a gradual escalation in carbon price could be accomplished while preventing carbon leakage.

This report measures the magnitude and coverage of taxes on energy use (energy and carbon taxes) in 42 OECD and G20 countries, representing approximately 80% of global energy use and CO2-emissions associated with energy use.

Carbon pricing should be a central element of climate mitigation strategies, helping countries transition to ‘net zero’ greenhouse gas emissions over the next three decades. Policymakers considering introducing or scaling up carbon pricing face technical choices between carbon taxes and emissions trading systems (ETSs) and in their design. This includes administration, price levels, relation to other mitigation instruments, use of revenues to address efficiency and distributional objectives, supporting measures to address competitiveness concerns, extension to broader emissions sources, and coordination at the global level. Political economy considerations also affect the choice and design of instruments. This paper discusses such issues in the choice between and design of carbon taxes and ETSs, providing guidance, broader considerations, and quantitative analyses. Overall, carbon taxes have significant practical advantages over ETSs (especially for developing countries) due to ease of administration, price certainty to promote investment, the potential to raise significant revenues, and coverage of broader emissions sources—but ETSs can have significant political economy advantages.