Overview
CEN ISO/TR 52000-2:2017 (ISO/TR 52000-2:2017) is a Technical Report that explains and justifies the overarching EPB (Energy Performance of Buildings) assessment methodology defined in ISO 52000‑1. Published by CEN in collaboration with ISO, this report supports correct understanding, national implementation and consistent use of the ISO 52000‑1 framework across Europe. It documents procedural background, choices made in the standard, validation of calculation methods and provides detailed examples for implementers.
Key topics and technical content
- Purpose and scope: Clarifies the overarching EPB assessment approach and how modules in the EPB standards interconnect.
- Modular structure and procedures: Describes the systematic, reference modular structure of the EPB standards and the step‑by‑step routing for implementation.
- Definitions, symbols and units: Consolidates terms, subscripts and abbreviations to ensure consistent interpretation in energy calculations and reporting.
- Preparation steps: Guides identification of object types, building/space categories, types of assessment and building services to be included.
- Calculation of energy performance: Explains inputs, outputs, calculation intervals, calculation periods and data types (product data, system design, operating conditions, constants).
- Measured performance and validation: Sets out measurement intervals, measurement procedures, procedures for calculating measured energy performance and comparison with calculated results.
- Reporting and normalization: Covers output data, normalization to building size, useful floor area and categorization for meaningful comparison and compliance assessment.
- Examples and national implementation guidance: Includes worked example cases to help national standards writers and practitioners adopt the method consistently.
Practical applications and users
This Technical Report is intended for:
- National standards bodies and regulators implementing EPBD (Energy Performance of Buildings Directive) related requirements.
- Energy assessors and certifiers performing overall EPB assessments and building energy certification.
- Building designers, MEP engineers and consultants using ISO 52000‑1 for design-stage energy calculations.
- Researchers and testing laboratories validating calculation procedures and measurement methodologies.
- Policy makers and auditors comparing measured versus calculated energy performance for compliance, retrofit planning and verification.
Practical uses include harmonizing national EPB procedures, validating calculation tools, defining measurement protocols for in‑use performance and producing consistent, comparable energy performance reports.
Related standards
- ISO 52000‑1 - Overarching EPB assessment (core methodology referenced and explained).
- EPB standard series and EU EPBD implementations - ISO/TR 52000‑2 provides guidance for national adaptation and implementation.
Keywords: energy performance of buildings, EPB assessment, ISO 52000‑1, ISO/TR 52000‑2, building energy calculation, measurement and verification, EPBD, energy certification, CEN.