Hyuga Transmission Line is a 500kV overhead line with a length of 124km from Hyuga, Kyushu, Japan, to Japan.

The project, which is currently under construction, is expected to be commissioned in 2022.


Hyuga Transmission Line is an overhead line that will be operated by Kyushu Electric Power. The line will carry alternating current (AC) through double circuit cable.

The development of the Hyuga Transmission Line project has been approved by the The Energy Conservation Center.

Hyuga Transmission Line project development status

The construction works on the Hyuga Transmission Line project were commenced in 2014 and commissioning is expected in 2022.

About Kyushu Electric Power

Kyushu Electric Power Co Inc (Kyushu Electric) generates electricity, distributes power systems, constructs, maintains, and repairs power generation facilities. It receives stores, vaporizes, delivers, and sells liquefied natural gas (LNG); and purchases, operates, charters and rents LNG carriers. The company generates electricity from various sources including nuclear, thermal, hydroelectric, geothermal, internal combustion, wind, solar, and biomass sources. Kyushu Electric’s non-energy businesses include IT and telecommunications, environmental and recycling businesses as well as lifestyle-oriented services.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.