After decades of having one of the most bulletproof business models, utilities don't look like the surefire investments they were just a few years ago. This is causing industry leaders such as General Electric (GE -0.31%) CEO Jeff Immelt to stand up and say "change." Not only are renewable technologies like solar and wind achieving cost parity with traditional power-generation methods, but the emergence of distributed power from companies like SolarCity (SCTY.DL) is slowly chipping away at utilities de facto monopoly.

These factors mean that some utilities are better suited to handle it than others, and there is one key factor that distinguishes them. Find out what this factor is by tuning into the video below.