Re: 8 years of no Batman or Bruce Wayne, and NO ONE could pick up the trend?
Yes. I read the clean energy project as Bruce's attempt to move on after Batman became obsolete. It let Bruce channel his energies into helping the city, rather than wasting his time in the cape and cowl and lingering on what's past.
"For he had promised her that, when she first saw Tanelorn, she would be riding upon a dragon."