The building uses an energy recovering ventilation system, including a thermal wheel heat recovery system which actually traps radiating heat from guests, as well as water vapor in the air, for use in heating and cooling later. It's got a massive ice storage unit, which it turns out is a much more green method of cooling the air down than air conditioning. (That's how they do it in California, after all!) And all of this is regulated by an integrated building automated system, which continually monitors temperature, pressure, and other environmental factors and adjusts its efforts in real-time.
That's not to play down that this is a functional, and massive, convention center. It holds 8,000 guests, including a 2,000-seat auditorium, and has "banqueting facilities" for up to 3,000 of your closest banqueting friends. And, of course, it has giant glowing rings on its exterior, which isn't necessarily environmentally sound but is totally shiny.