Ironman had a tower with self-sustaining clean energy, but that's because he is fictional and has arc reactor technology. The 99-story Pertamina Energy Tower in Jakarta has a plan to generate its own power too, but in a very real and arguably cooler way. The tower features a funnel-shaped opening at the top that channels air into vertical wind turbines. The energy company is also considering the possibilities of a geothermal system, positing that "it would essentially provide an unlimited energy source for the tower and campus and could make the tower the world’s first energy-positive supertall building.”
The design of the tower is both attractive and practical. Yes, it looks a little like a razor clam but only from certain angles and not enough to be off-putting. You can bet that architects will be copying this in the near future.