Poseidon – Neptune Line is a 400kV overhead line with a length of 11km from Poseidon, Cape, South Africa, to Neptune, Cape, South Africa.

Construction works on the Poseidon – Neptune Line started in 2017 and the project was commissioned in 2018.


The Poseidon – Neptune Line, which is an overhead line, is being operated by Eskom Holdings SOC. The Poseidon – Neptune Line is an upgrade line. The line carries alternating current (AC) through double circuit cable.

Poseidon – Neptune Line project development status

The development of the Poseidon – Neptune Line project was approved by National Energy Regulator of South Africa in 2017 and the project works were completed in 2018.

About Eskom Holdings SOC

Eskom Holdings SOC Ltd (Eskom) is a state-owned power utility that generates, transmits and distributes electricity. It generates electricity from coal-fired stations, gas-fired plants, hydro and pumped storage power plants, and nuclear power plants, among others. The company supplies electricity to industrial, mining, commercial, agricultural and residential customers, and to municipalities and metros for redistribution to households and businesses. The company maintains network of transmission power lines and underground cables. It procures electricity and sells in countries of the Southern African Development Community (SADC). The company operates in Uganda and South Africa.


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.