Torre Iberdrola, Bilbao, Spain

Caesar Pelli
Date Built
Plaza de Euskadi, 5
The website of the architectural practice of Pelli Clarke Pelli describe the Iberdola Tower as the, "... first tower in Europe to achieve LEED Platinum certification, the U.S. Green Building Council’s highest rating in sustainable design. The elegant 41-story glass tower is the focal point of Bilbao’s Abandoibarra development.  The tower anchors a new plaza, the Plaza Euskadi, on one of the city’s most important avenues, near the Nervión River."

The building's website claims that, "... Torre Iberdrola has become a point of reference in the fast-paced financial life of Bizkaia’s capital city. The building was raised at the heart of new Bilbao, in a modern, accessible area which is very well-connected to transportation links. Torre Iberdrola is not just the tallest building in the Basque Country. It is the city’s new economic centre and a reference among spaces for businesses."

The building's green credentials are achieved by, "... a wide array of environmental sustainability strategies ... The concrete from an existing train yard was reused and fly ash was specified for the structural concrete. A continuous loop of 30°C (86°F) water runs through the building to assist in heating or cooling demands, depending on the season and time of day. Most significantly, the Torre Iberdrola has a highly efficient double-wall glass façade. Cool interior air circulates through the cavity between the walls, drawing heat up and into the ceiling plenum, allowing the building to recapture heat from its exposed areas and delivering it to where the demand is highest. Potable water consumption is reduced by 40 percent over that of a conventional building by using highly efficient fixtures, minimizing the irrigation, and implementing a system for filtration and reuse of gray-water."