Hitachi Energy delivers record HVDC transformers
Hitachi Energy delivers its largest-ever transformer set, supporting a 9 GW HVDC project designed for long-distance, high-efficiency power transmission.
Image for illustrative purposes
Brazil / Saudi Arabia: Hitachi Energy has completed the production and delivery of the largest set of transformers ever manufactured by the company in Brazil, marking a major milestone for its local operations. The equipment is destined for a HVDC interconnection project in Saudi Arabia, described as one of the most advanced energy infrastructure initiatives currently under development.
The 14 transformers were manufactured at Hitachi Energy’s facility in Guarulhos, São Paulo, where the company has operated for more than 70 years. They are based on Asymmetric Light HVDC technology, which enables more compact and sustainable installations while reducing space requirements and environmental impact.
Each transformer is designed for a service life exceeding 30 years and for operation under diverse climate conditions. With a rating of 580 MVA and 380 kV, each unit weighs around 342 t during transport and more than 512 t once fully installed. When completed, the HVDC systems will provide a combined transmission capacity of up to 9 GW.
Given the scale and complexity of the project, the Brazilian operation underwent detailed auditing and certification by Saudi technical teams, validating its infrastructure, quality standards and engineering capabilities. The project has also highlighted the global role of the Guarulhos factory within Hitachi Energy’s transformer business.
Transporting the transformers represents a major logistical challenge. The units are moved at very low speeds from Guarulhos to the Port of Itajaí, requiring careful coordination to avoid sudden acceleration or braking and to ensure balanced load distribution across transport vehicles.
The transformers are expected to be fully delivered by September 2026, with the HVDC system scheduled to enter operation in 2027. Once in service, the equipment will support the efficient transmission of electricity over long distances, reinforcing the role of Brazilian engineering in a flagship global energy project.
Source: Hitachi Energy
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