In recent years, both compliance and voluntary markets have emerged to help support the development of renewable energy resources. Both of these markets are growing rapidly and today about half of U.S. states have RPS policies in place, with a number of these policies adopted in the last several years. In addition, many states have recently increased the stringency of their RPS policies. This paper examines key market interaction issues between compliance and voluntary renewable energy markets. It provides an overview of both the compliance and voluntary markets, addressing each market's history, purpose, size, scope, and benefits while addressing issues, including double counting.
Of the Clean Development Mechanism projects that exist in Mexico, methane destruction projects from hog farms dominate the landscape with 56% of the projects developed and 49% of the Certified Emission Reductions (CERs) that will be generated within the country by 2012. These biodigesters, however, have experienced many technical difficulties that place their future viability and continued development in question. Because of these challenges, future methane capture in the country may focus around other agro industries or landfills.
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