From the New York Times’ The Moment blog:
This evening, rush hour commuters on Xicui Road in the western part of Beijing will be treated to the sight of a 20,000 square foot LED screen displaying videos that are twelve stories high. It will be the official debut of the Greenpix Zero Energy Media wall, a building-sized video installation powered entirely by solar energy. Designed by the architect Simone Giostra — who has worked on projects with Richard Meier and Steven Holl — the building features a glass wall clad in a photovoltaic laminate that soaks up the sun’s rays during the day and uses that energy to project low-resolution LED videos at night.