NESE pipeline work begins
Underground‑infrastructure briefings reported that Williams has begun construction on the NESE (Northeast Supply Enhancement) pipeline project, with the company targeting a 2027 startup window (x.com). Industry notices highlighted discrete milestones on right‑of‑way and initial trenching tied to the broader schedule (x.com).
Williams has started construction on the Northeast Supply Enhancement pipeline, a long-delayed expansion of its Transco gas system, with service targeted for the fourth quarter of 2027. (williams.com) The company held a groundbreaking ceremony on April 14 at Floyd Bennett Field in Brooklyn. Williams said the project will add 400,000 dekatherms a day of capacity across Pennsylvania, New Jersey, and New York. (williams.com) A pipeline is a pressurized steel line that moves gas the way a highway moves traffic. In this case, NESE expands an existing route rather than building an entirely new interstate system, with new loops, added pipe segments, compressor work, and an offshore connection into New York waters. (williams.com; dec.ny.gov) New York state records say the project includes a new 26-inch-diameter underwater line running through Raritan Bay and Lower New York Bay to about three miles offshore of the Rockaway Peninsula. The state said roughly 23.5 miles of new underwater pipeline are planned, including about 17.4 miles in New York waters. (dec.ny.gov) New Jersey’s portion includes a new gas-fired compressor station in Franklin Township, a 3.43-mile Madison Loop in Middlesex County, and the offshore Raritan Loop. State regulators said the project is designed to provide 400,000 dekatherms a day of added capacity to Transco’s existing Rockaway Transfer Point. (dep.nj.gov) The project moved from proposal back to construction only after a new round of approvals in 2025 and 2026. Federal regulators reissued NESE’s certificate on August 28, 2025, New Jersey approved key land and water permits on November 7, 2025, and New York approved a Clean Water Act certification on November 7, 2025; New Jersey then approved the compressor station air permit on January 12, 2026. (documents.dps.ny.gov; dep.nj.gov; dec.ny.gov) NESE has been in fights with regulators and environmental groups for years. Oil & Gas Journal reported that Williams shelved the project in 2020 after failing to secure state water permits, then asked the Federal Energy Regulatory Commission in 2025 to reissue its approval. (ogj.com) Supporters say the added gas supply will help serve downstate customers, including National Grid’s existing customers in Brooklyn, Queens, and Long Island. New York’s project page says the line is intended to support reliability and help displace oil use. (dec.ny.gov; williams.com) Opponents are still in court. NRDC said last week that it and partner groups sued New York regulators after the state approved the project’s water-quality permit, and Earthjustice said the coalition argues the line threatens water quality and marine habitat; allied groups also challenged New Jersey’s approval in November 2025. (nrdc.org; earthjustice.org; sierraclub.org) For now, the key change is physical work on the ground and in the right of way, not just paperwork. After years of permit denials, reversals, and renewed approvals, NESE has shifted into a construction schedule aimed at late 2027. (williams.com; documents.dps.ny.gov)
