It is hard to tell from the article if this is for their business systems or for their operational ones. The system as described on the PDF's on the Indus site shows primarily supply and service chain optimization but also implies integration to the operation systems at at least a basic level. Either way it shows that these organizations are just like many others in that they are finding value in the interconnectivity that is increasingly available.
This stuff already happens more often than you might think even on the ACS side. Obviously there are some significant security conserns but it should be possible for it to be an improvment overall if it is done properly. Yet another area of convergence.