New York Approves the $3.26 Billion Propel NY Line, 90 Miles of It Underground
- Policy & Markets Regulatory State & Local Regulation
Marin Holt
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- 6 minutes read
- PSC approval: September 17, 2026
- Project cost: $3.26 billion
- Route length: 90 miles
- Voltages: 138 kV and 345 kV
- In service: 2030
The New York Public Service Commission on September 17, 2026 approved the Propel NY Energy transmission project, a $3.26 billion line that runs about 90 miles underground between Long Island and the rest of the state. New York Transco and the New York Power Authority own the project jointly. It adds 138 kV and 345 kV circuits and touches nine existing or new substations across Suffolk, Nassau, Queens, Bronx and Westchester counties. The New York Independent System Operator picked the project in 2023 through its public policy transmission planning process, which is the route the state uses when policy goals rather than reliability alone drive a build. Service is due in 2030.
What The Order Actually Clears
The approval settles siting, not shovels. PSC Chair Rory Christian said the project “meets our statutory siting standards.” Before crews break ground, the Commission still has to authorize Environmental Management and Construction Plans for Phase 1 and Phase 2 separately. The comment window on those plans runs to October 1, 2026.
Work starts in pieces. Construction is expected in discrete areas later in 2026, with broader work from mid-2027. Not everyone along the route is satisfied. Sea Cliff Village Administrator Bruce Kennedy said the village is reviewing the decision.
Why It Matters
Long Island sits at the end of a constrained pocket of the New York grid. Propel NY raises transfer capability into and out of that pocket, which is the precondition for moving offshore wind past the shoreline and into the rest of the state. Underground construction is the expensive way to do this. The route buys public acceptance with capital cost, and ratepayers carry that trade.
The 2030 date is the number to watch. A project selected in 2023 that reaches service in 2030 spends seven years getting built, and the siting approval only arrives in year three. That pace is the real constraint on any state plan that assumes new transmission shows up before the generation it is meant to carry.
MGRID notes the cost figure varies by source. Utility Dive reports $3.26 billion and Transformer Magazine rounds to $3.3 billion.
Critical Perspective
The Commission approved $3.26 billion for 90 miles of cable, and service is not due until 2030. Siting is the easy half, because the Environmental Management and Construction Plans for both phases still need separate authorization before any crew digs. NYPA and National Grid finished the 100-mile Smart Path Connect line in June 2026, which unlocked 1,000 MW of clean power. If a project chosen in 2023 only clears siting in 2026, what does that say about every New York plan that assumes wires arrive before the generation they carry?
