I have worked at CICERO since 2002. I was initially hired to program our first computable general equilibrium model, and started a PhD on the effectiveness and acceptability of environmental taxes two years later. After completing my PhD in 2008 I have managed research projects on environmental taxes, transport policy, behavioural interventions ("nudges"), and energy efficiency. I was Research Director of the Climate Policy unit in 2012 and 2013, and the Climate Economics Unit from 2014 to 2017. From 2014 to 2019 I was Director of our FME-center CICEP Center for International Climate and Energy Policy, and much of my outreach and research focused on the Paris Agreement. Since 2019 I have led the climate economics group. My primary research interest is climate policy instruments. I lead two projects funded by the Research Council of Norway, "Aviate" on the role of aviation in a low-carbon society and "Enable" on enabling the green transition in Norway. Most of my research is based on use surveys, lab and field experiments.