With the goal of providing a comprehensive discussion of the issues that most affected the carbon market in 2010, the authors of last year’s report have restructured State and Trends of the Carbon Market for 2011. The report still provides an overview of the size and reach of the carbon markets, as well as the evolution of the Kyoto flexibility mechanisms, and offers potential supply/demand scenarios for coming years. However, it no longer includes a detailed breakdown of carbon transactions, as in previous years. Instead, the report provides a more in-depth analytical discussion of the regulation and policy issues that will guide future carbon market development.