Short Answer: Anno<p>Until their depiction in <i>Neon Genesis Evangelion</i> in 1995, power lines were virtually non-existent in anime. After all, why draw them when they take up more time and effort during a time-packed production schedule? However, Hideaki Anno, the director of the aforementioned anime, began to implement them in backgrounds, bringing in a new kind of mechanical urban aesthetics. Anno has a certain kind of obsession with mechanical structures, such as power lines and rail tracks, as he likes the way they continue into a distance. He continued depicting them in his later works, such as <i>Kare Kano</i> as well as live action features such as <i>Shiki-jitsu</i>, <i>Love and Pop</i> and his recent blockbuster <i>Godzilla Resurgence</i>[1]. Given how Evangelion revolutionized anime, the industry quickly followed its influence including its aesthetics.<p>Source: I've interviewed him. [Link](<a href="http://rickyreports.com/archives/annohideaki/" rel="nofollow">http://rickyreports.com/archives/annohideaki/</a>)<p>[1] Well, it is rather an essential feature to portray destruction within this long-running monster franchise.