Hitachi Energy, the partner of choice for largest-ever HVDC wind energy project in U.S. - Seite 2

The SunZia Transmission project is a 3,000 MW HVDC link between Corona, New Mexico and Pinal County, Arizona. Hitachi Energy has already started work on designing and engineering the two HVDC Light converter stations, one at either end of the link. The transmitting station converts the power from AC to DC for transport in the overhead lines, then back to AC for integration into the receiving grid.

Hitachi Energy has partnered with Quanta Services, Inc. (Quanta) to provide a turnkey project solution for the SunZia project, including managing the HVDC construction and building installation at the associated project sites. Quanta is an industry leader providing specialized infrastructure solutions to the utility, renewable energy, communications, pipeline, and energy industries. The collaboration with Quanta is designed to leverage the core competencies of the two companies to deliver a best-in-class solution for the project. The HVDC converter stations are expected to be in-service by the end of 2025 to support final testing and commissioning of the SunZia Wind facilities in 2026.

To find the optimal solution that considers the impact of the new facility on the existing grid, a system study and a comprehensive interconnection and system impact analysis were conducted by Hitachi Energy´s expert consultants.

Hitachi Energy will also supply ‘alternating current (AC) chopper’ technology to help restore power if the power flow on the DC line or in the AC grid in Arizona is temporarily interrupted by weather and other contingency events.

Hitachi Energy has delivered more than half of the HVDC projects in North America. These include the Pacific Intertie transmission system, which transfers electricity from the Pacific Northwest to Los Angeles, the Quebec-New England link, which was the first large-scale multi-terminal HVDC transmission system in the world, and the Maritime link, which connects the Islands of Newfoundland and Nova Scotia, supporting the integration of renewable energy sources and improving grid stability. The company has also recently announced new HVDC projects including Champlain Hudson Power Express, the Châteauguay converter station modernization with Hydro Quebec, and the InterMountain Power Project.²