Benmore – Haywards HVDC Line is a 350kV overhead line with a length of 572km from Benmore, Canterbury, New Zealand, to Haywards, Wellington, New Zealand.

The project, which is currently in the planning stage, is expected to be commissioned in 2021.


Benmore – Haywards HVDC Line is an overhead line that will be operated by Transpower New Zealand. The line will carry direct current (AC) through double circuit cable.

Approximately $209.08m was financed by the authorities to undertake the construction works of the project.

Benmore – Haywards HVDC Line project development status

The construction works on the Benmore – Haywards HVDC Line project were commenced in 2020 and commissioning is expected in 2021.

About Transpower New Zealand

Transpower New Zealand Ltd (Transpower) is involved in electricity transmission. The company owns and operates National grid, a high voltage transmission network which carries electricity to cities, towns and industrial users through transmission lines and substations. It also builds and maintains power grids, transmission towers, lines and conductors. Transpower’s project portfolio includes North Taranaki Regional Supply Project, Clutha Upper Waitaki Lines Project, Westport Disconnection Project, Rangataua Bay Transmission Line Realignment Project and others. The company has offices in Auckland, Hamilton, Palmerstone and Christchurch, New Zealand.


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.