Lambda – Theta Line is a 765kV overhead line from Lambda, Gauteng, South Africa, to Theta, Gauteng, South Africa.

The project, which is currently under construction, is expected to be commissioned in 2021.


Lambda – Theta Line is an overhead line that will be operated by Eskom Holdings SOC. The line will carry alternating current (AC) through double circuit cable.

The development of the Lambda – Theta Line project has been approved by the National Energy Regulator of South Africa.

Lambda – Theta Line project development status

The construction works on the Lambda – Theta Line project commissioning is expected in 2021.

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.