New York Approved a $3.26 Billion Underground Line Through Five Counties

New York regulators have certified Propel NY Energy, a $3.26 billion transmission build that will add roughly 89.7 miles of underground line and nine new or upgraded substations across five downstate counties. The Public Service Commission took up the Article VII petition from New York Transco and the New York Power Authority at its Sept. 17 session in Albany and granted the certificate of environmental compatibility and public need.

The certified route crosses Suffolk, Nassau, Queens, Bronx and Westchester counties at 138 kV and 345 kV, largely inside existing public rights-of-way and on existing substation property. NYISO selected the Transco and NYPA proposal through a competitive solicitation. The Commission concluded that the need for the line still exists despite offshore wind cancellations, pointing to the state's 9-gigawatt offshore wind target for 2035 and the more than 1,800 megawatts already operating or under construction. Work could begin in discrete areas late this year, broaden by the middle of 2027, and finish in 2030.

Underground transmission is not overhead line work. The scope is duct bank and conduit, splice vaults, cable pulling and terminations, and testing sequences that stall a schedule when they fail. The nine substations carry the rest of it: structural steel and bus work in the yard, control buildings, protection and relay panels, grounding grids, and the wiring and commissioning that ties each station back to the system. NYPA also describes submarine segments on the project, which adds marine cable landings and shore transitions to the field work.

The certificate is not the starting gun. Article VII of the Public Service Law covers lines of 100 kV or more running at least 10 miles, or 125 kV and above running a mile or more, and it displaces local review: once an application is filed, municipalities and other state agencies generally cannot require their own hearings or permits for the facility. Before construction begins, though, the Commission must approve an Environmental Management and Construction Plan fixing the precise field location and the environmental controls crews will work under.

The labor commitment is already on the record. NYPA has said the project team is committed to using skilled union labor to the greatest extent practicable, and IBEW leadership backed the proposal when NYISO selected it. That points the staffing pipeline at line, cable and substation contractors and at the downstate IBEW locals rather than at inside wiremen moving between commercial buildings. Nine substations across two voltage classes also mean a procurement list of power transformers, switchgear, breakers and high-voltage cable, which is why NYPA has supplier outreach open years ahead of the bulk of the field work.

Ninety miles of cable and nine substations is four years of work in one of the densest electrical markets in the country. The compliance plan will set the date it actually starts.