Overview
CEN ISO/TR 52003-2:2017 is a Technical Report published by CEN that provides explanatory material and justification for ISO 52003-1 on the energy performance of buildings. It is a non‑normative document - intended to support correct understanding and practical application of ISO 52003‑1 rather than to impose requirements. The report clarifies relationships between indicators, requirements, ratings and certificates used in building energy performance (EPB) frameworks and explains choices that Member States and practitioners must make when implementing the standard.
Key topics
- Purpose and scope: Explanatory guidance to interpret and apply ISO 52003‑1; no normative provisions.
- EPB concepts and relations: How energy performance features, indicators, requirements, ratings and certificates interrelate (see Clause 6 schematic reference).
- Indicators and normalization: Discussion of overall and partial energy performance indicators and normalization (e.g., to building size).
- Selection criteria and input/output data: Guidance on choosing calculation options and required data for consistent assessments.
- Tailoring requirements and ratings: Approaches to adapt requirements and rating scales to project characteristics, climate, and national policy choices.
- Energy performance requirements: Guidance on selecting mixes of requirements for new buildings and for major renovations, and on constant vs. variable requirement strategies.
- EPB rating procedures: Reference points, scale expressions, proposed shapes of rating scales and use of reference values.
- Certificates and reporting: Recommended content and a default graphical model for energy performance certificates, plus a reporting template for overall performance.
- Quality control and compliance: Advice on verification, quality assurance and checks to ensure credibility of certificates and ratings.
Applications and users
CEN ISO/TR 52003-2:2017 is practical for:
- National and regional authorities establishing energy performance frameworks under the EPBD.
- Standards committees and policy makers designing tailored EPB requirements and rating scales.
- Building energy assessors and certifiers preparing energy performance certificates.
- Designers, consultants and architects seeking consistent interpretation of ISO 52003‑1 indicators.
- Product manufacturers and testing bodies aligning product policy and product standards with EPB procedures.
- Researchers and software developers building compliant calculation tools.
Practical uses include setting national requirement mixes, developing certification procedures, defining reference values for rating scales, and implementing quality control processes for energy certificates.
Related standards
- ISO 52003‑1 (primary normative document explained by this TR)
- Supersedes EN 15217:2007
- Part of the CEN EPB standard set developed under EU/EFTA mandates (M/343, M/480) and linked to the EU Energy Performance of Buildings Directive (EPBD).
Keywords: energy performance of buildings, energy performance indicators, energy certificates, EPB standards, ISO 52003-1, CEN ISO/TR 52003-2:2017.
