After several years at high levels, oil prices dropped by more than half between June 2014 and January 2015, leading many to ask questions about the implications for the economy and for countries’ and companies’ energy choices. Although such price swings have happened before, the issues being discussed are indeed quite important. 

Strong, predictable and rising carbon prices send an important signal to markets and can reduce greenhouse gas emissions without harming the economy. Around 40 national jurisdictions and over 20 cities, states and regions, have adopted or are planning explicit carbon prices, covering about 12% of global GHG emissions.