| Summary: | This study analyses the economic effects of the EU's 'Fit for 55' climate mitigation policies using the OECD ENV-Linkage model, a dynamic, global Computable General Equilibrium model. The model projects macroeconomic, sectoral, energy and emission trends for the EU, and for the five largest EU economies separately, up to 2035. Policy scenarios combine carbon pricing with regulations to reach the 'Fit For 55' emission reduction target in 2030. Additional scenarios analyse i) harmonised carbon pricing across countries and sectors, ii) different forms of revenue recycling from carbon pricing, iii) the effect of the EU's proposed Carbon Border Adjustment Mechanism on competitiveness, and iv) the effect of Russia's war against Ukraine on mitigation costs. Given the short time horizon of the analysis (until 2035), the model does not assess the positive economic benefits associated with fewer climate impacts and extreme climate events. 'Fit for 55' policies are projected to lead to a loss of GDP per capita of 2.1% in 2035 compared to the reference scenario (pre-'Fit for 55' policies), reflecting increasing production costs on the back of higher carbon pricing. Higher carbon pricing is also projected to lead to a loss of competitiveness in energy-intensive industries. The EU's proposed Carbon Border Adjustment Mechanism may only partly mitigate the loss of competitiveness of energy-intensive industries. Harmonising carbon pricing across sectors would help limit the loss to GDP per capita, as a uniform carbon price is lower and allows for directing emission reduction efforts to sectors and countries with the lowest abatement costs. Finally, Russia's war against Ukraine has not substantially increased the GDP costs of mitigation. Without the war, lower fossil fuel import prices would have led to higher fossil fuel demand, ultimately requiring more stringent mitigation action
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