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11. January 2011

From Low-Energy to Zero-Energy Building: Status and Perspectives

Download the article from Bauphysik 06/2010 for free.

Karsten Voss, Eike Musall und Markus Lichtmeß

”Net Zero Energy Building” has become a prominent wording to describe the synergy of energy efficient building and renewable energy utilization to reach a balanced energy budget over a yearly cycle.

Taking into account the energy exchange with a grid infrastructure overcomes the limitations of energy autonomous buildings with the need for seasonal energy storage on-site. Even though the wording ”Net Zero Energy Building” occurs in many energy policy documents a harmonized definition or a balancing method is still missing. The paper reports on the background and the various effects influencing the energy balance approach. After discussing the national energy code framework in Germany a harmonized terminology and balancing procedure is suggested. Besides the energy balance the procedure takes load energy efficiency and matching into account.