In this paper a detailed CUSUM quality control chart for monitoring energy use performance is given. This method can also be easily applied for monitoring the fuel consumption in a similar manner. This paper discussed the problem based on electrical energy consumption in melting furnaces of foundry industry. Drawing on the existing theory and based on the
problem selected, it is found that CUSUM charts are valuable for monitoring energy use process, as they tend
to detect process shifts on the 14 th day itself than traditional charts showed no change. This will lead the
decision maker to proactively respond to the out put control situation and correct the problems well in time.