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Sasol is an international integrated energy and chemical company that leverages the talent and expertise of more than 34,000 people working in 37 countries. The company develops and commercializes technologies, building and operating world-scale facilities to produce a range of product streams, including liquid fuels, high-value chemicals and low-carbon electricity.

In December 2012, Sasol New Energy, a subsidiary of the international petrochemical company, switched-on its new gas engine electricity generation plant in Sasolburg, South Africa. The Sasol Gas Engine Power Plant (SGEPP) is the largest plant of its kind in Africa. It is powered by 18 Wärtsilä gas engines with an installed capacity of 175 megawatts (MW), using natural gas as feedstock. This same year, Eskom, the South African electricity public utility, introduced a system of opportunity for independent electricity producers, such as Sasol, to sell excess capacity to Eskom on a short term basis.

This provided impetus for Sasol to demonstrate its position as a low-carbon power producer in South Africa by contributing power to and easing pressure on the national grid. However, Sasol’s Gas Engine Power Plant requires maintenance at very specific service intervals in accordance with the asset management plans. The duration of each maintenance interval is also dependent on the type of service being performed. The Decision Support Group of Sasol Technology turned to AIMMS to develop an application to solve this maintenance puzzle.

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