Arnot Power Station

Arnot Power Station in Mpumalanga, South Africa, is a coal-fired power plant operated by Eskom. Coal from the Arnot coal mine directly feeds the station.

Arnot Power Station
South Africa-Mpumalanga-Middelburg-Arnot Power Station01.jpg
Location of Arnot Power Station
  • South Africa
LocationMpumalanga, South Africa
Coordinates25°56′38″S 29°47′22″E / 25.94384°S 29.78956°E / -25.94384; 29.78956Coordinates: 25°56′38″S 29°47′22″E / 25.94384°S 29.78956°E / -25.94384; 29.78956
Commission date1971-1975
  • 800 (2017)
Thermal power station
Primary fuelCoal
Turbine technology
Power generation
Units operational1 x 370 MW
1 x 390 MW
2 x 396 MW
2 x 400 MW
Units planned6 × 350 MW
Nameplate capacity2,352 Megawatt
External links
CommonsRelated media on Commons


Construction of Arnot started in 1968, this generation unit went on line in 1971 and the station was fully operational by 1975.[1] Between 1992 and 1997 three of its units were mothballed due to Eskom's surplus generating capacity, but they were brought back online in January 1997, November 1997 and December 1998 respectively.

The cooling towers were constructed using a unique convex slip-form process by the contractor Concor.

Power generationEdit

Power generation was originally by six 350 MW units with a total installed capacity of 2,100 MW.[2] Turbine Maximum Continuous Rating is 35.60% [2]

Unit ratings now given as 1 x 370 MW; 1 x 390 MW; 2 x 396 MW; 2 x 400 MW for a total of 2,352 MW installed capacity and 2,232 MW nominal capacity.[3]

Power distributionEdit

In addition to feeding the South African grid, Arnot, along with Camden Power Station, also feeds the Mozal Aluminium smelter in Mozambique via 400 kV transmission lines.[2] Mozal consumes around 950 MW.[4]


Arnot has twice been awarded NOSCAR status by the National Occupational Safety Association.

See alsoEdit


  1. ^ "Heritage - Arnot Power Station". Eskom. Retrieved 6 January 2010.
  2. ^ a b c "Arnot Power Station". Eskom. Retrieved 6 January 2010.
  3. ^ "Fact sheets with additional information" (PDF). Retrieved 29 January 2016.
  4. ^ "SA energy crisis affects Mozambique aluminium export". Engineering News (Creamer Media). 2008-09-28. Retrieved 6 January 2010.

External linksEdit