Vermont Green Line Devco LLC applied May 3 at the New York State Public Service Commission for a Certificate of Environmental Compatibility and Public Need authorizing it to construct and operate the New York State portion of the Vermont Green Line Project.
The project would allow for the transfer of up to 400 MW of power from New York to Vermont. The portion of the project proposed to be sited in New York includes four primary components:
- a new high voltage direct current (HVDC) converter station, located in the Town of Beekmantown;
- a new approximately 0.7 mile underground 230 kV alternating current (AC) transmission line that would connect existing New York Power Authority (NYPA) 230 kV transmission lines to the proposed new HVDC electric converter station;
- a new upland underground ±150 kV direct current (DC) transmission line, approximately 6.7 miles long, that would extend between the new HVDC converter station in Beekmantown to the shoreline of Lake Champlain at Point Au Roche State Park; and
- a new underwater ±150 kV DC electric transmission line, extending from the shoreline of Lake Champlain in Beekmantown toward the shoreline in Ferrisburgh, Vermont, approximately 4.9 miles of which would be in New York waters.
This project would enhance the reliability of the existing New York ISO electric system at the point of interconnection, provide reactive power or maintain a desired voltage level on the AC network, and provide voltage stability and voltage control during faults on the AC network, the company said.
The application added: “The Project will provide an ‘energy bridge,’ allowing additional development of new wind energy in upstate New York that would otherwise be constrained and uneconomic given the existing delivery infrastructure to load centers in New York. The Project will allow incremental deliveries of hydroelectricity from Canada across existing transmission facilities into New York and, thus, is consistent with the State’s proposed Clean Energy Standard of supplying 50% of its energy needs from renewable sources by 2030.”