Contemporary State and Development of a Concept of Passive House

This paper deals with the development of requirements for the energy-passive construction. The main emphasis is focused on a new categorization of passive houses into classes according to the Passivhaus Institute: the Passive House Classic, the Passive House Plus and the Passive House Premium. The requirement for annual specific heating demand is unchanged, maximally 15 kWh/(m2·a). A new evaluation system of Energy Passive Houses is based on renewable primary energy (PER). The aim of the paper is a description and evaluation of various classes of energy passive houses, including feasibility analysis and model examples.