DIN EN ISO 52000-1:2018-03

This document establishes a systematic, comprehensive and modular structure for assessing the energy performance of new and existing buildings (EPB) in a holistic way. It is applicable to the assessment of overall energy use of a building, by measurement or calculation, and the calculation of energy performance in terms of primary energy or other energy-related metrics. It takes into account the specific possibilities and limitations for the different applications, such as building design, new buildings 'as built', and existing buildings in the use phase as well as renovation. The framework for overall EPB includes: a) common terms, definitions and symbols; b) building and assessment boundaries; c) building partitioning into space categories; d) methodology for calculating the EPB (formulae on energy used, delivered, produced and/or exported at the building site and nearby); e) a set of overall formulae and input-output relations, linking the various elements relevant for the assessment of the overall EPB; f) general requirements for EPB dealing with partial calculations; g) rules for the combination of different spaces into zones; h) performance indicators; i) methodology for measured energy performance assessment.