What the hell is up with the title of this article? Nowhere did I find any indication of anyone being "scared" or "frightened."
The threat that the article explains is that cheaper, better batteries makes going off-grid easier. Of course, electricity utilities aren't going to release a press release stating that they 'are afraid of this new technology and will try to kill it'! You may have doubts about how much of a threat batteries are to electricity companies and how that potential loss compares with the gain from electric cars, but the article is clear on the risks, in my opinion.