Ontario, Canada (IESO Region)
East West Tie Line
Completed in 2022, this project enabled the replacement of inefficient generation in Northwestern Ontario with cleaner and cheaper sources of power while enhancing reliability.
Current Projects
Viridon and Blackstone are investing in major new transmission projects to integrate renewable energy while strengthening the grid.
Location
New York (NYISO Region)
Details
100-mile, ±320kV High Voltage Direct Current (HVDC) transmission lines, converter stations, and 345kV interconnection cables.
Background
This project is currently under development by Viridon New York and planned for completion in 2033. It is one of several being considered by the state to achieve New York’s ambitious clean energy goals. The project will interconnect with future offshore wind projects and deliver their energy to the Downstate grid via submarine cables, enabling the controlled delivery of 5,600 MW of local renewable power into the New York Metro area.
Location
New York (NYISO Region)
Details
339-mile, ±400kV High Voltage Direct Current (HVDC) transmission line and converter station.
Background
This project is currently under construction and scheduled for completion in 2026. It is owned and managed, and was originated and developed, by Transmission Developers, a fellow Blackstone portfolio company. The project will extend underwater and underground from Quebec to New York City, enabling the controlled delivery of 1,250 MW of low-cost renewable power into the New York Metro area, while making substantial investments in environmental protection programs and other community initiatives.
Prior Projects
The Viridon team has a long track record of delivering mission-critical transmission projects across North America.
Nevada (CAISO Region)
Gridline West
GridLiance, a predecessor Blackstone portfolio company, partnered with a local cooperative utility in Nevada to acquire and upgrade their high voltage system.
Texas (ERCOT Region)
Lone Star Transmission
Completed in 2013 as part of a statewide buildout of the high voltage grid to accommodate the integration of 10,000 MW of wind energy.
California (CAISO Region)
Trans Bay Cable
Completed in 2010, this first-of-its-kind submarine project can deliver 400 MW from the East Bay to San Francisco, meeting 40% of the city’s peak electrical power needs while reducing energy costs and environmental impacts for California customers.
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