This paper introduces geoengineering into an optimal control model of climate change economics. Together with mitigation and adaptation, carbon and solar geoengineering span the universe of possible climate policies. Their wildly different characteristics have important implications for climate...

Denmark’s green growth strategy focuses on moving the energy system away from fossil fuels and investing in green technologies, while limiting greenhouse gas (GHG) emissions. On the whole, current policies should allow Denmark to reach near-term climate change targets, but may not be...

The seminal contributions of William Nordhaus to scholarship on the long-run macroeconomics of global climate change are clear. Much more challenging to identify are the impacts of Nordhaus and his research on public policy in this domain. We examine three conceptually distinct pathways for that...

Limiting global warming to no more than 2°C requires global large-scale deployment of low-carbon and negative emissions technologies. This requires the development of new eco-innovations and the diffusion of new and existing ones. Existing portfolios of environmental and technology policy...

As governments, firms, and universities advance ambitious greenhouse gas emission goals, the demand for emission offsets – projects that reduce or remove emissions relative to a counterfactual scenario – will increase. Reservations about an offset’s additionality, permanence,...

Carbon dioxide removal from the atmosphere is becoming an important option to achieve net zero climate targets. This paper develops a welfare and public economics perspective on optimal policies for carbon removal and storage in non-permanent sinks like forests, soil, oceans, wood products or...

Carbon leakage occurs when carbon-priced low-emission domestic products are replaced with high-emissions foreign products. In a trade model with endogenous emissions abatement, we investigate the impact of three policies aimed at mitigating carbon leakage: free emission allowances, Carbon Border...

Transportation is one of the main contributors to greenhouse gas emissions. Climate regulations on transportation are often a mix of sector-specific regulations and economy-wide measures (such as emission pricing). In this paper we analyse the effects on economic welfare, abatement costs and...