As planned, the 2.1-million-sq-ft office tower will have all the usual bells and whistles of a high-performance skyscraper and then some. A proposed anaerobic digester plant to produce methane from food waste and a "green" roof may not materialize. But the building is on course to have a 4.5-MW cogeneration plant; night ice production; rain, stormand groundwater capture and use for ...