Wits Business School (ETDs)

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Determinants of Eskom’s key financial ratios
(2020) Ndlovu, Senzesihle Philani
This research estimates an empirical model to determine the key drivers of Eskom’s profitability measures. These measures are return on assets (ROA) and net profit margin (NPM). The explanatory variables used were the real GDP growth rate, relative coal price, relative electricity price, USDZAR exchange rate, SA government bond yield, and Eskom’s default risk premium. The paper applies Ordinary Least Squares (OLS) estimation to timeseries data collected from the period 2000 to 2018 using multivariate regression analysis. The study finds that the key drivers of Eskom’s ROA are the growth rate of real GDP and the growth rate of relative coal prices. The growth rate of real GDP has a significant and positive impact on ROA. The second part of the investigation focused on the drivers of Eskom’s NPM. Of the six independent variables tested, only one variable was found to be statistically significant, and that variable was real GDP growth. The growth rate of real GDP has a significant and positive impact on NPM.