Overview
ISO/TR 52003-2:2017 is an informative technical report that accompanies ISO 52003-1 and explains the background, rationale and correct use of the normative requirements in Part 1. It does not contain normative provisions itself; instead it provides guidance, clarifications and worked examples to support consistent implementation of the energy performance of buildings (EPB) framework for indicators, requirements, ratings and certificates.
The report situates ISO 52003-1 within the wider EPB standards family and clarifies relationships with product standards and product policy (see Clause 6, Figure 4). It also supplies templates, illustrations and annex procedures to help implementers apply the standard in practice.
Key Topics
- Purpose and scope: Explanation and justification of the concepts used in ISO 52003-1; informative only.
- Document description and selection criteria: Guidance on choosing among options and methods described in Part 1.
- Input and output data: Recommended data items and reporting templates for consistent EPB calculations and declarations.
- EPB feature relationships: How features, indicators, requirements, ratings and certificates interrelate.
- Energy performance indicators: Overall and partial performance metrics, normalization (e.g., to floor area) and use of ratios.
- Tailoring and requirements: Approaches to tailor requirements and ratings for project characteristics, new versus existing buildings, and tightening over time.
- EPB rating & reference values: Procedures for defining rating scales, reference points and classification methods.
- Energy performance certificates (EPCs): Recommended content, graphical models and procedural steps for issuing certificates.
- Quality control and compliance check: Guidance on verification, reporting and ensuring conformity.
- Informative annexes: Templates for input/method selection, default choices, variable-value illustrations, classification procedures and an energy label model.
Applications
ISO/TR 52003-2:2017 is practical guidance for:
- Policy makers and regulators implementing EPB requirements into building codes.
- Energy assessors and certifiers preparing energy performance certificates (EPCs).
- Building designers and consultants applying EPB indicators and tailoring requirements to projects.
- Software developers creating compliance and calculation tools aligned with ISO 52003-1.
- Building owners and facility managers interpreting ratings and certificates for retrofit or procurement decisions.
The report helps ensure consistent, transparent and defensible use of EPB indicators, ratings and certificates across climates, building types and jurisdictions.
Related standards
- Normative companion: ISO 52003-1 (Part 1 - normative requirements)
- Overarching EPB: ISO 52000-1
- Supporting technical rules: CEN/TS 16628, CEN/TS 16629
- Historical references: EN 15217, ISO 16343
Keywords: ISO/TR 52003-2:2017, energy performance of buildings, EPB, indicators, ratings, certificates, ISO 52003-1, energy performance certificate, building energy performance.
Open preview (PDF)Energy performance of buildings — Indicators, requirements, ratings and certificates — Part 2: Explanation and justification of ISO 52003-1