US HVDC Transmission Lines In Progress / Completed
Champlain Hudson Power Express
Champlain Hudson Power Express
- November, 2022 - Completion Date 2026 (Construction Progress)
- Canadian Border to Queens, New York
- 1,250 MW - enough power for more than 1 million homes
- HVDC cable
- 339 miles with 60% in waterways and 40% buried underground
- "This project is entirely privately funded, and the overall cost is approximately $6 billion" (CHPE Q&A)
Read the Adirondack Explorer article on the construction progress here
SSO Green HVDC Link
Champlain Hudson Power Express
"The SOO Green HVDC Link is a 350-mile 2,100 MW, 525KV underground high voltage direct current (HVDC) transmission line running along existing rail corridors from Iowa to Illinois. Connecting the nation’s two largest power markets – MISO in the Midwest, and PJM in the East. "
"The project will use two 5-inch diameters (about the size of a wine bottle), 525KV extruded cross-link polyethylene (XLPE) insulated cables installed in a 3-foot wide by 5-foot deep trench. SOO Green HVDC Link will construct two VSC power converter stations at either end of the 350-mile HVDC line. "
This is a privately funded project.
View video on the construction techniques being used here
New England Clean Power Link
In progress 2024 - "The project has received all required permits that allow it to bury two six-inch-wide cables an estimated 150 miles, all in Vermont. "
DOE New England Clean Power Project Summary
ISO New England Consumer Liaison Group Presentation
- Canadian border to Vermont
- 1,000 MW
- 300 kV - 320 kV HVDC cable
- 150 miles, all under water or buried underground in existing rights-of-way
- $1.6 billion merchant line will be privately financed and will not use taxpayer dollars
The Hudson Project
- May 2011 - Completed June 2013
- New Jersey , Long Island New York
- 660 MW - enough power for about 600,00 homes
- 345 kV HVDC cable
- 7.5 miles, entirely underground & underwater. It follows existing railroad rights-of-way, through an inactive railroad tunnel to the edge of the Hudson River in Edgewater. It is then buried beneath the Hudson for approximately three-and-a-half miles
- $850 Million
Neptune Transmission
Power Santa Clara Project
- June 2005 - Completed June 2007
- New Jersey To Long Island, New York
- 660 MW, enough power for about 600,000 homes
- 500 kV HVDC cable
- 65 miles, @15 miles buried underground &@60 miles underwater
- $650 Million, This project was privately funded. (Neptune Project In Operation)
Power Santa Clara Project
Power Santa Clara Project
- Expected to start 2026 with a completion date in 2028
- California
- 500 kV and 320 kV HVDC cables
- 1 mile 500 kV buried underground and 13 miles 320 kV buried underground
- $450 Million