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.

[3] 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.

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