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- The HVDC Industry: Visualised, Simplified, for You
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Explore the HVDC supply chain database
EMTP
EMTP
EMTP is an advanced software tool for simulation and analysis of power systems, known as the Electromagnetic Transients Program, which provides highly accurate modeling capabilities for electromagnetic transients across transmission, distribution, generation, and industrial sectors with over 35 years of development experience backed by major power utilities including EDF, Hydro-Quebec and RTE.
In the HVDC domain, EMTP delivers comprehensive modeling and simulation capabilities for analyzing complex power electronics systems, supporting engineers in the design and operation of HVDC transmission projects through specialized tools that enable detailed studies of both converter technologies and their integration with power grids.
EMTP
SSEN
Scottish and Southern Electricity Networks (SSEN)
Scottish and Southern Electricity Networks (SSEN) is a major UK electricity network operator responsible for both electricity transmission and distribution, delivering power to over 3.9 million homes and businesses across the north of Scotland and central southern England. Part of the SSE plc group, SSEN manages extensive distribution and transmission networks that span some of the UK’s most challenging terrains.
SSEN is actively involved in high-voltage direct current (HVDC) projects, primarily through SSEN Transmission, its subsidiary responsible for the high-voltage transmission network in northern Scotland, which includes key investments and operations in underground and subsea HVDC cables.
SSEN
RWE
RWE
RWE is a leading global energy company with over 125 years of history, currently focusing on the generation of green electricity through wind farms, solar power, and battery storage facilities across many countries. The company is deeply invested in the energy transition, aiming for net zero emissions by 2040, and continues to be a major player in electricity generation, storage solutions, and energy trading.
RWE is involved in high-voltage direct current (HVDC) activities primarily through its expansion of renewables and grid infrastructure, supporting the integration and transmission of clean energy over long distances.
RWE
Transmission Investment
Transmission Investment
Transmission Investment is a leading independent transmission business in the UK, specializing in the development, acquisition, and management of large-scale electricity infrastructure projects, particularly in the offshore transmission sector. The company brings extensive expertise across origination, engineering, financing, construction, and asset management, and is recognized for its active role in shaping industry dialogue with policymakers and stakeholders.
Transmission Investment is a major operator of offshore transmission (OFTO) assets and has substantial experience with High Voltage Direct Current (HVDC) interconnectors, furthering its impact in connecting renewable energy sources—such as offshore wind farms—to the UK grid and supporting the wider energy transition.
Transmission Investment
Inelfe
Inelfe
Inelfe (Interconexión Eléctrica Francia-España) is a joint venture established in 2008 by the national grid operators of Spain (Red Eléctrica de España, REE) and France (Réseau Transport d’Électricité, RTE), each holding an equal stake. Its primary role is to develop, construct, and operate electricity interconnections between France and Spain to enhance electricity exchange and grid stability across the Iberian Peninsula and Europe.
Inelfe has played a key role in HVDC projects, notably overseeing the Baixas–Santa Llogaia underground interconnection and the Biscay Gulf submarine link, both of which use high-voltage direct current technology to significantly boost cross-border transmission capacity between Spain and France.
Inelfe
RTDS Technologies
RTDS Technologies
RTDS Technologies is a leading company in the field of real-time digital power system simulation, based in Winnipeg, Manitoba, Canada. They are renowned for their innovative real-time power system simulators, which have revolutionized the power industry by enabling detailed testing and validation of power systems, including renewable energy and microgrid technologies.
RTDS Technologies' activities in High Voltage Direct Current (HVDC) and Flexible AC Transmission Systems (FACTS) involve the use of their advanced simulators to test and validate the performance of these systems. This allows for the simulation of complex power transmission scenarios, ensuring the reliability and efficiency of HVDC and FACTS systems in real-world applications.
RTDS Technologies
Teesing
Teesing
Teesing is a global supplier and manufacturer specializing in high-quality components and assemblies for the transportation, control, sealing, distribution, filtration, purification, and measurement of gases and liquids. With over 70 years of experience and offices in the Netherlands, the United States, Taiwan, and China, Teesing delivers solutions across a variety of sectors, emphasizing quality, innovation, and close collaboration with partners.
In the HVDC sector, Teesing provides specialized cooling solutions for converter stations, leveraging its expertise in assembly, precision engineering, and cleanroom operations to meet stringent technical and cleanliness requirements.
