Ice, ice, baby.
By making ice in the basement between 8 pm and 8 am, the building uses energy when it's cheaper and then recirculates cooled water to regulate the trading and office floors during the day when energy is expensive.
First LEED-Platinum skyscraperAccording to Winston, this storage system uses off-the-shelf technology (albeit 44 tanks' worth): an antifreeze called glycol runs through green tubes into the tanks, where ice melts and flows into a heat exchanger which sends cool water upstairs.
Not only does this save the landlord money, says Winston, but it spares the grid from delivering extra power on days when demand is highest -- which is when the oldest, dirtiest power plants crank into gear.
NEXT: Have good air days.
