New York Approves $3.3B Long Island Transmission Line

New York Approves $3.3B Long Island Transmission Line

New York’s Public Service Commission approved a 90-mile, $3.26 billion transmission line linking Long Island to the rest of the state’s grid, Utility Dive reports, clearing a major hurdle for the Propel NY Energy project.

Market Impact

The line, developed jointly by New York Transco and the New York Power Authority, is designed to boost power flows, including offshore wind, between Long Island and downstate New York. The project runs through Suffolk, Nassau, Queens, Bronx and Westchester counties, connecting to nine existing or new substations with new underground lines at both 138 kV and 345 kV levels.

Opponents argued the project had lost its rationale after several offshore wind developments were canceled, but the PSC rejected that argument. “While it is true that the pace of offshore wind energy generation development has slowed… contrary to the arguments made by some parties, the need for the project continues to exist,” the commission said in its order. The state still has more than 1,800 MW of offshore wind operating or under construction, and New York’s 9 GW offshore wind target for 2035 remains intact even after lawmakers adjusted broader emissions goals earlier this year. PSC Chair Rory Christian said the review confirmed the project “meets our statutory siting standards and will help provide needed power downstate.”

Not everyone is on board. Sea Cliff Village Administrator Bruce Kennedy told the Long Island Herald the village is “thoroughly reviewing the decision and weighing all available options for our next steps,” adding that “Sea Cliff is not done protecting our residents, our community and our harbor.”

What It Means for Subcontractors

• The PSC is reviewing Propel NY’s Environmental Management and Construction plans now, with a public comment period open until Oct. 1. These plans must be approved before any ground-breaking, so bid packages tied to construction sequencing likely won’t firm up until after that review closes.
• Developers say limited construction could start in “discrete areas along the route” later this year, giving underground utility, civil, and site prep crews in Suffolk, Nassau, Queens, Bronx and Westchester counties an early entry point.
• “More comprehensive construction” is targeted for mid-2027, pending remaining approvals and permits, which is the window when larger packages for trenching, duct bank installation, substation work at the nine connection points, and 138 kV/345 kV cable pulling should open up.
• Work will run in “limited segments and phases” toward a 2030 completion, suggesting a multi-year schedule of overlapping regional packages rather than one continuous mobilization, useful for shops planning crew allocation across the five-county corridor.
• Local opposition, including from Sea Cliff, hasn’t been resolved and could affect permitting timelines in specific segments, so subs bidding early-phase work should track whether route or scheduling changes emerge near contested areas.