Economic literature generally favours market-based instruments for regulating environmental externalities since they ensure compliance at the least cost to society. Emission taxes have been increasingly introduced internationally, with the focus shifting to CO2 after the adoption of the Kyoto...

We examine an open economy's strategy to reduce its carbon emissions by replacing its consumption of coal - very carbon intensive - with gas - less so. Unlike the standard theoretical approach to carbon leakage, we show that unilateral CO2 reduction policies generate a higher leakage rate in the...