Zelenka is a self-styled "green" guru who championed City Hall demolition. A replacement glass box that will necessitate extreme levels of cooling to negate the thermal gain--- ask someone at the U of Oregon how "efficient" the state-of-the-art Jaqua Center is-- is Alan's dream. One also could look at London's glass city hall and its astronomical energy usage to see the folly of using an "aquarium" design. 
Geothermal heating, super-insulation, air exchange schemes--- these can add astronomical costs to the greenest facility--- and many are seriously flawed. With super-insulation come many problems with little history of solution: stale air, dangerous levels of carcinogenic materials (trapped inside), overly complex systems with dependability issues. Air exchange solutions always are very expensive. 
Unfazed, Zelenka races ahead, meanwhile neglecting such mundane issues as seeking to get his own ward on the street repair list. 
A colossus of Trumpian proportion.