What's Happening?
The Federal Energy Regulatory Commission (FERC) issued a Draft Policy Statement on October 15, 2026, proposing significant changes to how it evaluates operational air emissions from interstate natural gas pipeline and liquefied natural gas (LNG) projects
under the National Environmental Policy Act (NEPA). The proposal, Docket No. PL26-3-000, aims to streamline environmental reviews by no longer routinely requiring air-dispersion modeling. Instead, FERC would assess quantified operational emissions, existing air quality, applicable Clean Air Act (CAA) requirements and permits, and proposed mitigation measures. Compliance with CAA requirements would generally be considered sufficient to conclude that operational air emissions are not 'significant' for determining the need for an environmental impact statement (EIS). This move follows recent statutory amendments and the U.S. Supreme Court's decision in Seven County Infrastructure Coalition v. Eagle County.
Why It's Important?
This proposed policy change could significantly impact the development and approval timelines for natural gas infrastructure projects in the U.S. By reducing the requirement for complex air-dispersion modeling, FERC aims to decrease data requests, costs, and delays associated with environmental reviews. This could accelerate the construction of new pipelines and LNG facilities, potentially boosting natural gas supply and export capabilities. However, Commissioner Chang's dissent highlights concerns that relying solely on emissions inventories without dispersion modeling might not adequately assess local ambient air quality, potentially exposing project authorizations to legal challenges under NEPA and the Administrative Procedure Act. The balance between streamlining reviews and ensuring thorough environmental protection is a critical aspect of this policy shift.
What's Next?
Comments on the Draft Policy Statement are due by November 16, 2026. Following this period, FERC will consider feedback before finalizing the policy. If adopted, the streamlined review process could shorten the approval timelines for certain pipeline and LNG projects. Developers will need to adapt their environmental assessment strategies, focusing on providing comprehensive data on equipment-specific emissions, applicable air-quality regulations, and mitigation measures. The debate surrounding the adequacy of emissions inventories versus dispersion modeling will likely continue, potentially leading to legal challenges against future project approvals that rely on the new policy. The practical question for developers will be whether existing or voluntary modeling can strengthen their project's record.
Beyond the Headlines
The proposed changes reflect a broader effort by FERC to re-evaluate NEPA implementation in the wake of the Supreme Court's Seven County decision, which emphasized a 'rule of reason' in setting the scope of NEPA reviews. This policy shift could signal a trend towards regulatory efficiency in infrastructure development, potentially influencing other federal agencies. However, it also raises fundamental questions about the balance between economic development and environmental protection. The potential for reduced environmental scrutiny, even if compliance with CAA is maintained, could lead to increased public and environmental advocacy group opposition. The long-term implications could include a redefinition of 'significant' environmental impact in the context of energy projects and a shift in how environmental risks are assessed and mitigated across the U.S. energy sector.
