The New York State Public Service Commission (PSC), in an April 21 order, approved partial transfers of a certificate of environmental compatibility and public need jointly sought by Consolidated Edison Company of New York (Con Edison), New York Transco (NY Transco) and Orange and Rockland Utilities (O&R).
As noted in the order, over 40 years ago, the PSC granted a certificate of environmental compatibility and public need authorizing Con Edison to build and operate the Southern Tier Interconnect, which included a 345-kV electric transmission line from O&R’s Ramapo substation in Rockland County to Central Hudson Gas & Electric’s Rock Tavern substation in Orange County, using towers capable of being strung with a second 345-kV circuit because the evidence showed that such circuit would be needed by the early 1980s.
Construction of the first circuit, known as Feeder 77, was completed in 1974 but, due to lower-than-projected load growth, Con Edison did not build the second circuit, the PSC said.
Five years ago, the PSC approved the partial transfer of the certificate to O&R, as well as an environmental management and construction plan (EM&CP) so that O&R could build part of the second circuit – from the Ramapo substation to O&R’s 138-kV Sugarloaf substation.
The PSC added that 18 months ago, it approved an EM&CP so that Con Edison could build the rest of the second circuit from the vicinity of the Sugarloaf substation to the Rock Tavern substation, including construction of a 345-kV/138-kV step-down transformer along with 345-kV switching equipment and ancillary facilities. That project, which is under construction, is expected to be in service by June, whereupon the entire second circuit authorized in 1972 – to be known as Feeder 76 – will be operated at 345-kV, the PSC said.
As TransmissionHub reported, Con Edison, NY Transco and O&R on Jan. 26 requested PSC approval for partial transfers of a certificate of environmental compatibility and public need and the associated EM&CP from Con Edison to NY Transco and O&R.
The PSC said in its order that the petitioners requested approval to transfer to NY Transco the portion of the Con Edison certificate – and associated EM&CP – covering the segment of the second Ramapo to Rock Tavern 345-kV line, starting at Line 28 in the Town of Chester in Orange County, then occupying the east side of Con Edison’s existing double-circuit towers located within Con Edison’s Southern Tier Interconnect right of way for a distance of 11.8 miles, and ending at the Rock Tavern substation in the Town of New Windsor in Orange County.
The petitioners also sought approval to transfer to O&R the portion of the Con Edison certificate – and associated EM&CP – covering the new 345-kV addition to the Sugarloaf substation located on the south side of Sugarloaf Mountain Road in Chester.
NY Transco said that if the PSC approves the requested partial transfer of the certificate to NY Transco, it agrees to assume the responsibilities associated with that portion of the Con Edison certificate and the associated EM&CP, as well as to comply with the terms, limitations and conditions contained therein. The PSC added that O&R said that if the PSC approves the requested partial certificate transfer to O&R, it agrees to assume the responsibilities associated with that portion of the Con Edison certificate and the associated EM&CP, as well as to comply with the terms, limitations and conditions contained therein.
The petitioners said that NY Transco would initially enter into an agreement with O&R for the day-to-day operation and maintenance of NY Transco’s segment of Feeder 76.
The PSC also noted that O&R owns, operates and maintains about 467 circuit miles of overhead and underground transmission facilities that range in voltage from 34.5-kV to 345-kV. The overhead transmission facilities consist of lattice towers, steel poles and various types of wood structures, the PSC said, adding that O&R maintains, under contract with Con Edison, the 345-kV overhead transmission facilities owned by Con Edison within O&R’s service territory, including Feeder 77.
The petitioners thus maintain that NY Transco and O&R are qualified to comply with the terms, limitations and conditions imposed by the PSC.
The PSC added that in view of the affidavits submitted by NY Transco and O&R, and given the experience and qualifications of the two companies, the PSC approves the partial certificate transfers. Since NY Transco must obtain a certificate of public convenience and necessity (CPCN) before acting as an electric corporation, the PSC said that it conditions its approval of the partial certificate transfer to NY Transco on NY Transco obtaining a CPCN.
Con Edison and O&R are subsidiaries of Consolidated Edison (NYSE:ED). NY Transco is jointly owned by these affiliates of the New York transmission owners: Consolidated Edison Transmission, Grid NY, Iberdrola USA Networks New York Transco, and Central Hudson Electric Transmission.