This paper examines the macroeconomic and distributional effects of the European Union’s transition to Net Zero emissions through a gradually increasing carbon tax. I develop a New Keynesian Environmental DSGE model with two household types and distinct energy and non-energy sectors. Five alternative uses of carbon tax revenues are considered: equal transfers to households, targeted transfers to Hand-to-Mouth households, subsidies to green energy firms, and reductions in labor and capital income taxes. In the absence of technological progress, the carbon tax policy induces a persistent increase in energy prices and a reduction in GDP, investment, and consumption. Headline inflation falls below zero in the medium run, reflecting weaker aggregate demand. Distributional outcomes vary significantly depending on the implemented revenue recycling scheme: targeted transfers are the most progressive but entail larger macroeconomic costs, while subsidies and tax cuts mitigate output and investment losses but are less effective in narrowing the consumption gap. A limited foresight scenario, in which agents learn about policy targets sequentially, generates more volatile adjustment paths and temporary inflationary spikes around announcements, but long-run outcomes remain close to the baseline.

Zur Erinnerung: Nach Jahren von Inflationsraten nahe null war die Inflationsrate in Deutschland 2022 nach der Corona-Pandemie und dem Überfall Russlands auf die Ukraine auf knapp 7% gestiegen, ähnlich hoch wie zur Energiekrise 1973/74. Die Gründe dafür sind bekannt: expansive Geld- und Finanzpolitik sowie steigende Energiepreise und Nachholeffekte beim Konsum, verbunden mit Lieferkettenproblemen gerade im Handel mit China. Seitdem haben Zentralbanken wie die EZB eine weiche Landung hingelegt. Ohne große Verluste beim Wachstum (zumindest global gesehen) wurde die Inflationsrate auf 1,6% im September 2024 gedrückt. Ein großer Erfolg?

We study the aggregate, distributional, and welfare effects of fiscal policy responses to Germany’s energy crisis arising in 2022 using a novel ten-agent new Keynesian (TENK) model. The crisis, compounded by the COVID-19 pandemic, led to sharp price increases and significant consumption disparities. Our model, calibrated to Germany’s income and consumption distribution, evaluates key policy interventions. We find that untargeted transfers had the largest short-term aggregate impact, while targeted transfers for lower-income households were most cost-effective. Other instruments yielded comparably limited welfare gains. The results highlight how targeted fiscal measures can address distributional effects and stabilize consumption during crises.