摘要
“Net Zero-Energy Building”has become a popular catchphrase to describe the synergy between energy-efficient building and renewable energy utilisation to achieve a balanced energy budget over an annual cycle.Taking into account the energy exchange with a grid overcomes the limitations of energy-autonomous buildings with the need for seasonal energy storage on-site.Although the expression,“Net Zero-Energy Building,”appears in many energy policy documents,a harmonised definition or a standardised balancing method is still lacking.This paper reports on the background and the various effects influencing the energy balance approach.After discussing the national energy code framework in Germany,a harmonised terminology and balancing procedure is proposed.The procedure takes not only the energy balance but also energy efficiency and load matching into account.
