Environmental regulators often have imperfect information about regulated firms' abatement costs. In this paper we compare taxes and emissions permits in a dynamic setting in which firms behave strategically. The regulator updates policy over time based upon previous aggregate industry...

New England is at the leading edge of an energy transition in which natural gas is playing an increasingly important role in the US electricity generation mix. In recent years, the region's wholesale natural gas and electricity markets have experienced severe, simultaneous price spikes. While...