Workers stand at the entrance to an office block in Sandvika

 
Workers stand at the entrance to an office block in Sandvika
Workers stand at the entrance to an office block in Sandvika February 4, 2013. Two office blocks by the Oslo fjord will generate more power than they use from 2014 after a radical refit meant to show that the world's energy-squandering building sector can do more to fight climate change. REUTERS/Alister Doyle
Tags: Oslo , Radical