Madrid's Air Tree

Just found an interesting article. I wonder how this structure faired out...
Reposting from metafficient.com
Article written by Justin Thomas

Huge “Air Tree” Structure Produces Its Own Power and Oxygen

by JUSTIN THOMAS on JANUARY 16, 2008

in ARCHITECTURE,RENEWABLE POWER

In Madrid, Spain they are currently building a huge structure called an “Air Tree” or “Eco Boulevard de Vallecas”. The Tree was created by Urban Ecosystem to be a social center, and to improve the surrounding environment. The structure is also completely self-sufficient, generating all its own power with solar cells. Any surplus energy is sold to the electrical grid. It also produces oxygen using its arrays of plants and trees, hence the “tree” appellation. The designers say:

…Simple air conditioning systems installed in the air tree are evapotranspirators. This is a natural way to air condition a space, not a part of commercial strategy. Rather, it creates naturally conditioned spaces between 8-10°C cooler than the surrounding streets where the residents can take active part in the public domain.

Structure made of mostly recycled materials