Leveraging the decision in Massachusetts v. EPA, public interest groups are using the National Environmental Policy Act (NEPA) to challenge approvals of coal-fired power plants on global warming grounds. Montana Environmental Information Center v. USDA, No. 07-1311 (D. D.C. July 23, 2007).

The groups sued to enjoin Rural Utilities Service (RUS), an agency of the U.S. Department of Agriculture, from providing federal loans for construction of a coal-fired power plant. The plaintiffs asserted that the agency failed to assess adequately the proposed plant’s environmental impacts, including the impact of CO₂ emissions on global warming. The plaintiffs claimed further that the proposed plant, along with other coal-fired power plants seeking funding from RUS, “could account for a significant share of U.S. greenhouse gas emissions.” RUS’s failure to consider these cumulative impacts on global warming in its Environmental Impact Statement, according to plaintiffs, violates its obligations under NEPA to take a “hard look” at actions that could impact the environment.

The Supreme Court’s decision in Massachusetts v. EPA did not involve NEPA and did not address whether federal agencies must consider global warming potential when undertaking such actions as permit approvals or funding decisions. The Ninth Circuit’s recent decision in Center for Biological Diversity v. NHTSA, however, concluded that regardless of whether climate change is outside the control of the agency whose action is at issue, NEPA obligates the agency to assess the effects of its own actions on greenhouse gas emissions. Courts’ willingness to require agencies to consider global warming in regulatory decisionmaking will complicate previously routine actions such as funding coal-fired power plants.

Briefing in the case is slated to begin March 7, 2008 and conclude May 30, 2008.

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