Zero Energy Buildings: A Reached Target or a Starting Point?

The debate about zero energy buildings (ZEBs) has been one of the main new drivers of innovation in the construction industry around the world in the past decade. What may have been seen ten years ago as a theoretical objective has become a current construction standard. Most of the new buildings in various countries, at least the European ones, are now highly-performing buildings (in Europe they are called nearly zero energy buildings), and achieving the high-performance targets became compulsory.