Green groups sue FERC over Constitution pipeline

By Mona Zhang | 05/21/2026 06:14 AM EDT

It’s just the latest development in a more-than-decade-long fight over the natural gas pipeline.

The first sections of the Constitution pipeline arrive in New York in 2014. The project has been tied up in permitting and legal battles ever since. The White House's infrastructure plan aims to streamline that process.

The first sections of the Constitution pipeline arrive in New York in 2014. Constitution Pipeline Co.

Environmental organizations are suing the Federal Energy Regulatory Commission over a decision surrounding the Constitution Pipeline Project, the latest development in a more-than-decade-long fight over the proposed natural gas pipeline that would link Pennsylvania to upstate New York.

On Tuesday, FERC dismissed requests for a rehearing over a prior agency order from some of the groups that filed the lawsuit and the New York State Department of Environmental Conservation. That evening, the environmental organizations filed their petition in the U.S. Court of Appeals for the Second Circuit.

Similar to the Northeast Supply Enhancement, another controversial natural gas pipeline, developer Williams Co. had all but abandoned the project until the Trump administration revived support for fossil fuels.

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How we got here: Williams Co. originally filed its application for the Constitution Pipeline Project at FERC back in June 2013.

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