Cost optimum calculation of energy efficiency measures in the Czech Republic

The EU Member States have adopted the Energy Performance of Buildings Directive (EPBD II) in their legislation. This directive introduces new procedures for evaluating the setting of energy performance requirements for buildings, including the so-called cost optimum requirements. The cost optimum is calculated using a comparative methodology framework developed in accordance with the Directive and shall be submitted every four years (EPBD II, 2010). The paper introduces the national cost optimum calculation completed in June 2017 in the Czech Republic. The main goal of this paper is to present selected results of the unique national cost optimum calculation model, including the methodology applied. The main method consists of primary data collection used to determine the cost for a full range of energy efficiency measures and the calculation of primary energy consumption in the selected types of buildings. Due to decreasing energy prices in recent years and the lower price for EE measures and renewables, no significant movement of the cost-optimal measures was observed. This article primarily creates the basis for calculating the cost optimum at the national level. The data can also be used to compare cost-related measures between particular EU Member States.