The last IEEE Power and Energy Magazine (Sep/Oct 2012) was dedicated to Data Analytics. Here is an excerpt from the introductory article by Dr. Kezunovic:

THE FEATURE ARTICLES IN THIS issue are devoted to the emerging i eld of data analytics, which is a computational capability to extract a cause-effect understanding of power system events. This knowledge gets extracted from field measurements through analytical methods and, in many cases, involves the use of various data and power system models. As it links the cause of an event with its consequence, it may be readily used by operators or in designing controllers to enhance power system operation.

Data analytics for the conversion of data to knowledge.

Please visit IEEE Xplore to access the full text.