Bank of America Towers over Manhattan

http://www.solaripedia.com/13/173/1725/bank_of_america_tower_ice_tanks.htmlThis ultra-green skyscraper uses power to turn water into ice to chill the building. The cooling system produces and stores ice during off-peak hours in large tanks in the subbasement. Then the ice is used to help cool the building during peak load, essentially operating like giant ice batteries. Ice batteries have been used since absorption chillers first made ice commercially 150 years ago, before the electric light bulb was invented.