News & Events
About the Project
Project Overview and Benefits
PSEG Long Island, as the agent of LIPA, is proposing the Syosset to Oakwood Project, to meet current and future capacity needs, and to maintain safe, reliable, and robust service in the area. The Project would include the installation of a new approximately 2.8-mile 138kV underground electric transmission line between the Woodbury Tap in Woodbury, Nassau County, to the Oakwood Substation in Huntington Station, Suffolk County. The new 138kV underground transmission line is proposed to occur primarily within the public rights-of-way along Woodbury Road, West Pulaski Road, Oakwood Road, and West 11th Street. The Syosset to Oakwood Project includes the installation of new riser poles and overhead transmission poles at the Woodbury Tap. This Project also includes upgrades to the Oakwood Substation and the installation of new overhead equipment. Modifications will also be made to existing lines 138-675 and 138-676, which both run from the Woodbury Tap to the Oakwood Substation.
Benefits Include:
The new 138kV electric transmission cable will help ensure continued reliable service. The proposed 138kV supply circuit from the Woodbury Tap to the Oakwood Substation will enhance reliability and increase load capacity to the existing transmission system.
The Project will be located primarily under roads and other public rights-of-way.
The new 138kV cable will be located underground except for certain above-ground electrical equipment and structures at the Woodbury Tap and Oakwood Substation.Permitting & Consultation Process
To construct the Project, PSEG Long Island will need, in addition to other necessary permits:
- The New York State Public Service Commission's issuance of an Article VII Certificate of Environmental Compatibility and Public Need and approval of an Environment Management & Construction Plan (EM&CP).
- Approval from or consultation with the New York Department of Environmental Conservation and New York State Office of Parks, Recreation & Historic Preservation.
- Consultation with Nassau County, Suffolk County, Town of Oyster Bay, and Town of Huntington.
New York State Public Service Commission Article VII and EM&CP Information
The Project's Public Service Law Article VII application and related documents in this case (Case 25-T-0241 ) can be accessed from the PSC's website (www.dps.ny.gov). Click "Commission File" and then "'File Search” to go to the Search page, then fill in the "Search by Case Number” box with the number for this case ( 25-T-0241 ). This will bring up the main Document and Matter Management ("DMM”) page(s) for this case, where the materials are located.
In addition, interested persons who wish to participate as parties in this case may file for party status. On the DMM page for this case, the prospective party should click the button at the upper right labeled "Request for Party Status” to see a Public Service Commission web page with instructions for the procedures to follow to become a party.
Document Library
- PSEG Long Island Syosset 2 Oakwood FAQ - 04/17/2025 - 6.01 MB
- PSEG Long Island Syosset 2 Oakwood FAQ - Espanol - 04/17/2025 - 6.01 MB
- Filing Letter (Oakwood) 4-15-25 - 04/17/2025 - 158 KB
- Application (Oakwood) - 04/17/2025 - 105 KB
- Table of Contents (Oakwood) - 04/17/2025 - 64 KB
- Appendix A (Oakwood) Agency Correspondence - 04/17/2025 - 6.00 MB
- Appendix B (Oakwood) Pre-Filed Direct Testimony - 04/17/2025 - 288 KB
- Appendix C (Oakwood) Public Outreach - 04/17/2025 - 2.53 MB
- Confidentiality Request Letter (Oakwood - 04/17/2025 - 231 KB
- Exhibit 1 (Oakwood) General Information Regarding Application - 04/17/2025 - 78 KB
- Exhibit 2 (Oakwood) Location of Facility REDACTED - 04/17/2025 - 16.24 MB
- Exhibit 3 (Oakwood) Alternatives - 04/17/2025 - 1.36 MB
- Exhibit 4 (Oakwood) Environmental Impact - 04/17/2025 - 22.57 MB
- Exhibit 5 (Oakwood) Design Drawings - 04/17/2025 - 4.44 MB
- Exhibit 6 (Oakwood) Economic Effects of Proposed Facility - 04/17/2025 - 92 KB
- Exhibit 7 (Oakwood) Local Ordinance - 04/17/2025 - 9.75 MB
- Exhibit 8 (Oakwood) Other Pending Filings - 04/17/2025 - 123 KB
- Exhibit 9 (Oakwood) Cost of Proposed Facility REDACTED - 04/17/2025 - 265 KB
- Exhibit E-1 (Oakwood) Description of Proposed Transmission Line - 04/17/2025 - 348 KB
- Exhibit E-2 (Oakwood) Other Facilities REDACTED - 04/17/2025 - 140 KB
- Exhibit E-3 (Oakwood) Underground Construction - 04/17/2025 - 323 KB
- Exhibit E-4 (Oakwood) Engineering Justification REDACTED - 04/17/2025 - 95 KB
- Exhibit E-5 (Oakwood) Effect on Communications - 04/17/2025 - 819 KB
- Exhibit E-6 (Oakwood) Effect on Tranportation - 04/17/2025 - 807 KB
- Glossary of Terms (Oakwood - 04/17/2025 - 100 KB
Construction Process
Overhead Transmission Construction Process
Overhead transmission and riser structures will be installed at the Woodbury Tap and overhead structures will be installed at the Oakwood Substation. The new structures will be within LIPA property and will connect the new underground transmission line to existing structures.
Underground Transmission Construction Process Overview
Construction of the Project will occur primarily along town and county roads, thus minimizing impacts to residents in the area.
Underground Construction Involves Five Key Phases
Splice Vaults Installation
Underground vaults will be installed at intervals along the route to splice together underground cable.
Conduit Installation
During the installation process, crews will route the new conduits to the new splice vaults.
Restoration
After completing the installation of the vaults, any excavated and disturbed areas will be restored.
Cable Installation
Underground cable arrives on trucks specifically designed for their installation. Crews will pull cable from one vault to another along the project route.
Cable Splicing
Crews will set up a climate-controlled environment at each vault location to splice the underground cables together. This activity is continuous for approximately one week for each vault.