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Lethabo Power Station

Location: Between Vereeniging and Sasolburg in the Free State.

Employees: Approximately 1 100

Technical details:

  • Six 618MW units

  • Installed capacity: 3 708MW

  • 2001 capacity: 3558MW

  • Design efficiency at rated turbine MCR (%): 37.80%

  • Ramp rate: 33.33% per hour

  • Average availability over last 3 years: 93.05%

  • Average production over last 3 years: 21 572GWh 

History: Construction of Lethabo started in 1980 and by December 1990, the station was fully operational. The station has been built on 11 000 concrete piles which were sunk 25 metres deep. 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. The station is 16 years old this year.

General: 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.

Contact details:

  • Switchboard Tel: (016) 457-5111

  • Communication Tel: (016) 457 5821

  • Power Station Manager  Thomas Conradie

  • Tel: (016) 457-5500

NOSCAR status: Lethabo was awarded NOSCAR status by the National Occupational Safety Association (NOSA) for the 10th time in 2005. A first for Generation.