Fiscal policymakers are expected to conduct countercyclical policies to mitigate cyclical fluctuations of output, but the assessment of cyclical conditions in real time is subject to considerable uncertainty. They face two types of risk: (i) launching discretionary measures to support or dampen...

We develop a two sector incomplete markets integrated assessment model to analyze the effectiveness of green quantitative easing (QE) in complementing fiscal policies for climate change mitigation. We model green QE through an outstanding stock of private assets held by a monetary authority and...