Germany's €6 Trillion Climate Bill: Who Pays?
Germany's state development bank has put a new price on the country's climate goal. According to a study by the research firm Prognos for KfW, reaching climate neutrality by 2045 will take about €6 trillion of investment, or €290 billion a year (KfW Research, 2026b).
The headline will be read as a cost. The more useful question is who has to find the money, and on that point the study has a clear message for anyone running a municipal utility. It also leaves something out: water and wastewater do not appear in it at all, although they draw on the same owners and the same lenders.
Bigger than it looks, smaller than it sounds
Across the scenarios it compares, the study finds a need of €5.7–6.4 trillion, or €270–300 billion a year. The last comparable estimate, from 2021, was €5 trillion. KfW attributes the rise to price increases and to a backlog, because too little was invested in recent years (KfW, 2026a).
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