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Sewaren-Metuchen 230kV Conversion Project

About the Project

The Sewaren-Metuchen 230kV Conversion Project was a $125 million investment to build a 230kV transmission system running from PSE&G’s Sewaren Switching Station in Woodbridge, NJ to its Metuchen Switching Station in Edison, NJ.

Mandated by PJM Interconnection, the regional transmission organization (RTO) responsible for planning the transmission system in all or parts of 13 states, including New Jersey, the project was designed to replace the existing 138kV transmission system from Woodbridge to Edison with a 230kV transmission system. PJM determined that this new transmission system was necessary to ensure reliable electric service, eliminate anticipated transmission constraints, and respond to PJM/Federal Energy Regulatory Commission (FERC)-mandated infrastructure expansion. The project eliminates electric system capacity issues in Central New Jersey, providing better power quality in the region.

The project required overhead transmission modification within existing PSE&G right of ways. There were major upgrades to four existing PSE&G stations, including the expansion of the Metuchen Switching Station. The route and stations extend through two municipalities in Middlesex County, Woodbridge and Edison. The existing 138kV lattice towers supporting the overhead lines were replaced with monopole structures. Existing stations were upgraded entirely within existing fence lines.

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