The given bar graph shows the information about an average number of Interruptions per customer in the year from 2011 to 2015. According to the graph we can say that, the maximum number can be seen at Ergon Energy which reaches to it’s maximum at 2.6% Followed by essential energy and ausnet services. The least number can be seen in actewgl and citi power. Overall, we can say that Ergon Energy has the higher number of interruptions as compared to any other source of energy.