American Clean Energy and Security Act of 2009 - Fall

The American Clean Energy and Security Act of 2009 addresses climate change through a comprehensive cap-and-trade system aimed at reducing greenhouse gas emissions across major sectors of the U.S. economy. The legislation establishes emissions caps targeting a 17% reduction by 2020 and an 83% reduction by 2050 relative to 2005 levels, focusing on large emitters such as power plants and industrial facilities. By creating a market for emissions allowances, the Act seeks to internalize the environmental costs of carbon while providing flexibility for regulated entities to either reduce emissions or trade allowances. The proposal reflects a broader recognition that climate change is a systemic issue requiring coordinated federal action, supported by scientific evidence and long-term policy commitments.

The report emphasizes that successful implementation depends heavily on institutional capacity, particularly within the Environmental Protection Agency, which would oversee program administration and coordination with other federal agencies. Key challenges include designing effective monitoring systems, managing allowance allocation, and ensuring market integrity. The phased implementation approach—including preparatory and voluntary trading periods—aims to ease the transition for regulated industries. However, concerns remain regarding administrative complexity, economic impacts, and political feasibility. Ultimately, the Act is framed as a critical step toward establishing a national carbon market, while highlighting the need for adaptive governance, robust performance metrics, and complementary policies to ensure long-term emissions reductions.

Learn more about the MPA-ESP Workshop in Applied Earth Systems Management.