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Duvha Power Station


Location: Approximately 15 km east od Witbank in Mpumalanga
Station Employees: Approximately 900
History: Construction of Duvha Power Station started in November 1975 and the last
unit came into operation in 1984. At the time of its construction, Duvha was a giant of
superlatives: it cost a staggering R1.6 billion to build, its chimneys were largest
freestanding concrete structures and its mine the largest open-cast colliery in the
Southern Hemisphere. The station is 22 years old this year.
General: In 1993 Duvha became the first power station in the world to be retrofitted
with pulse jet fabric filter plants on three of its six units. These plants contribute
largely to the reduction of air pollution by removing 99.99% of the fly ash which
otherwise would be released into the air through the station's chimneys.
 Technical details:
- Six 600MW units Installed capacity: 3 600MW
- 2001 capacity: 3 450MW
- Design efficiency at rated turbine MCR (%): 37.6%
- Ramp rate: 40% per hour
- Average availability over last 3 years: 89.85%
- Average production over last 3 years: 22 798GWh
Safety: Duvha's excellent safety record is proven by the fact that it has been awarded
NOSCAR status twice already by the National Occupational Safety Association (NOSA).
The last award was made in March 2001.
Contact details:
Tel: (013) 690-0111
Fax: (013) 690-0448