NY Department of Environmental Conservation sues FERC over pipeline

By Mona Zhang | 05/26/2026 06:22 AM EDT

The lawsuit comes alongside a similar challenge filed by environmental organizations.

The New York State Department of Environmental Conservation is challenging a Federal Energy Regulatory Commission decision over a proposed natural gas pipeline from Pennsylvania to upstate New York.

The lawsuit, filed Thursday in the 2nd U.S. Circuit Court of Appeals, comes alongside a similar challenge filed by environmental organizations last week. The DEC and green groups are contesting a decision by FERC to dismiss their requests for a rehearing on the Constitution Pipeline.

The pipeline project was all but abandoned by developer Williams Co. before being revived by the current Trump administration’s support for fossil fuels. DEC is challenging FERC’s decision to continue proceedings under the original docket — despite a court order that the commission dismiss the proceedings after Williams said in 2020 that it would not move forward with the project.

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DEC declined to comment on the ongoing litigation. However, the agency has previously expressed opposition to Williams’ bid to restart the project.

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