The station is located between Vereeniging and Sasolburg in the Free State and consists of six 618MW units for a total installed capacity of 3,708MW.

Total efficiency at Turbine Maximum Continuous Rating is 37.80% Lethabo burns coal with a calorific value of 15 - 16 MJ/kg and an ash content of 42%.

It is the only power station in the world running on such low grade coal.

The reason being to alleviate the heaving clay problem after some 190 000 bluegum trees were removed during site clearing.

At the time, it was the largest piling contract ever awarded to a South African contractor.