The Champlain Hudson Power Express Project is an epic example of the creative solutions that major transmission utilities and third parties are undertaking to interconnect adjacent markets across borders. This hybrid 337-mile project will carry more than 1,000 MW of renewable power from Canada to the New York metropolitan areas. The project includes sections of high-voltage direct current (HVDC) submarine power cables running through Lake Champlain, the Hudson, East, and Harlem Rivers, with other sections using HVDC underground with the existing Delaware & Hudson Railroad and CSX Transportation railroad right of ways.
The $2.2 billion dollar project is expected to be completed and commissioned in 2017, linking the Montreal area to the New York City neighborhood of Astoria, Queens. The transmission link between Canada and New York is being developed by Transmission Developers Inc. (TDI), a Blackstone Group, L.P, and is designed to transport electricity from hydropower and wind resources in eastern Canada and feed it directly into the New York City electricity market. The Quebec section of the line and high-voltage alternating current (HVAC) to HVDC converter station is being built and will be operated by TransÉnergie, the transmission division of Hydro-Québec, one of the largest Canadian utilities.
The following graphic shows the scope of the project, starting out at the Hertel converter station in Quebec, where HVAC is converted to HVDC. The HVDC line runs under Lake Champlain for over 100 miles and then through railroad right of ways for 126 miles. It then runs under the Hudson River to New York City over about 100 miles, with a few underground transitions in New York City.
Champlain Hudson Power Express
(Source: Transmission Developers, Inc.)
It’s clear that these HVDC submarine and underground systems are complex solutions that have less environmental impact than overhead transmission lines with associated right of way and eminent domain issues.
The majority of HVDC submarine electric transmission projects are being planned and completed in the European market, where tremendous off-shore wind resources in the Nordic countries, Germany, and the United Kingdom are coming online. It’s great to see that creative projects such as the Champlain Hudson Power Express transmission system are also happening in North America. Over the next 5 to 10 years, this type of interconnection/intertie between independent system operator/regional transmission organization (ISO/RTO) regions and countries will be critical to delivering adequate and increasingly renewable power resources. For more information, look for my upcoming report (expected to publish in 2Q 2015) on submarine electric transmission, which will include regional and global forecasts for capacity and revenue through 2024.
Tags: Energy Efficiency, HVAC, HVDC, Submarine, Transmission & Distribution, Utility Transformations
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