High Voltage Direct Current (HVDC)
HVDC solutions that sustain power superhighways
High voltage direct current (HVDC) transmission systems enable reliable power delivery around the world and support renewable energy transmission. Our team has provided engineering services representing over 100,000 megawatts (MW) of the world’s planned or installed capacity of HVDC projects.
Whether you need HVDC owner’s engineer or specialist technical advisory services, we can help. Our team keeps up to date on state-of-the-art developments in the industry and works closely with international organizations that set standards, including CIGRE and the IEEE (Institute of Electrical and Electronics Engineers). We can also lead refurbishment and replacement projects when your systems begin to experience reliability concerns as equipment approaches or surpasses its design life.
Our specialist HVDC services are augmented by almost 60 years of experience with high voltage substation, transmission, and distribution system experience—including overhead lines and underground and submarine cables.
Let us help you take the next step in your power delivery journey.
Power delivery experience from around the globe
Our project teams are experienced with major HVDC voltage source converter (VSC) and line commutated converter (LCC) projects around the world. We possess considerable knowledge and understanding regarding HVDC converter station manufacturers—their technical capabilities and experience. With offices around the world, we have local, technical specialists who understand the unique permitting challenges that differ from city to state to country.Supporting the largest clean energy infrastructure initiative in US history
We’re serving as owner’s engineer on the SunZia Transmission Project which will provide clean, renewable energy to communities in Arizona and California. The project includes developing a 3,000-MW capacity, 525-kilovolt (kV) HVDC transmission system—that’s enough power to supply three million people. The energy transmission project requires overhead lines across 550 miles (885 kilometres) of federal, state, and private lands from New Mexico to Arizona. Read MoreUnique challenges and opportunities of HVDC modernization projects
Modernization of existing HVDC projects can come in the form of refurbishment or replacements. Replacing converter valves, transformers, controls, protection, filters, and other HVDC equipment requires extensive planning, engineering, and project management. We can provide a solution that carefully and precisely integrates the upgraded equipment into the existing facilities. Our teams have extensive experience with HVDC modernization, helping clients efficiently and effectively extend the operating life of their HVDC assets.How do we get offshore wind energy into the grid?
Simply generating renewable energy isn’t enough. We must also safely and reliably transport it to where it will be used. An offshore wind turbine sends the electricity it produces to the shore by using an underwater cable system. There are two basic types of transmission cables: high voltage alternating current (HVAC) and high voltage direct current (HVDC). HVDC is the preferred option for offshore transmission distances greater than 60 miles (95 kilometres) or when the power being transmitted is greater than 1,000 MW. Read MoreRobyn Koropatnick, Principal, Regional Global Sector Lead, HVDC
Every client throughout the world deserves a team dedicated to overcoming the challenges of their specific power delivery project.
Ralph Kurth, Senior Principal, Energy
I enjoy working with diverse teams to deliver important energy infrastructure projects.
Phaedra Taiarol, Supervising Engineer
Power transmission has become integral to society. Integrating renewable energy as we move towards net zero must be done with foresight.
Brian Frost, Supervising Engineer
Every power transmission project requires safe, reliable, and effective solutions to meet today's grid challenges and needs.
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Work with passionate people who are experts in their field. Our teams love what they do and are driven by how their work makes an impact on the communities they serve.