South Oswego-Tar Hill
Central New York
National Grid’s South Oswego-Tar Hill project includes rebuilding approximately 28.6 miles of 115kV electric transmission lines in Oswego County, and construction of two new substations.
Project Quick Facts
- South Oswego-Tar Hill serves Oswego County and travels through the City of Oswego, and the towns of Albion, Mexico, New Haven, Orwell, Richland, and Scriba.
- The project will replace existing 115kV wire and structures in the right-of-way. Additional easements may be needed for the construction and operation of the line.
- National Grid will also build two new substations to support this project.
- Also included are access roads upgrades, and technologies to improve response time and decrease maintenance costs.
Public Meetings
Thank you to everyone who joined us at our virtual session on June 4, 2025, open houses on June 11 and 12, 2025, and the Public Service Commission's public statement hearings on July 22, 2025.
You may always contact us with questions or comments by phone at 844-473-6864 or [email protected].
Current Activities
The project has entered the permitting phase with the submittal of the Article VII Application to the New York Public Service Commission in January 2025. Geotechnical investigations (soil borings) will continue along the transmission line corridor through summer 2025. Project team members will be on site, reviewing the corridor starting in May 2025. Sites for potential construction yards (marshalling or laydown yards) continue to be evaluated.
Document Library
- Project Map
- Project Fact Sheet
- Link to Article VII Application
- Notice of Public Statement Hearings, June 2025
- Public Meetings Invitation, May 2025
- Field Walkdown Notice, May 2025
- Article VII Application Notice, January 2025
- Geotech Notice, June 2024
- Drone Notice, March 2024
- Notice of Field Studies for Alternative Routes, September 2023
- Notice of Field Studies, June 2023
Permitting and Participation
This project will require Article VII permitting to proceed. National Grid submitted the Article VII Application - Case no. 25-T-0049 - to the Public Service Commission (PSC) on January 25, 2025. Copies the Application were provided to officials, regulators, agencies, and public repositories such as town halls and libraries. The Application is also available on the PSC website. For more information about permitting, please see our Project FAQ page.
The permitting process includes opportunities for public involvement and comment from permitting through construction. To contact National Grid with a question or comment, you may reach us by phone at 844-473-6864 or [email protected].
Interested persons who wish to participate as parties in this case may file for party status. This may be done through the Commission’s website, https://www.dps.ny.gov.
Schedule
- Design & Permitting: Fall 2023 – Fall 2025
- Anticipated Construction Start: Spring 2026
- Anticipated Construction End: Summer 2029
