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• 27.015 Energy efficiency. Energy conservation in general
• 03.120.10 Quality management and quality assurance
• 91.140.01 Installations in buildings in general
• 91.120.10 Thermal insulation of buildings

This document is applicable to specific energy audit requirements in buildings. It specifies the requirements, methodology and deliverables of an energy audit in a building or group of buildings, It is applied in conjunction with, and is supplementary to, EN 16247‑1, Energy audits — Part 1: General requirements. It provides additional requirements to EN 16247‑1 and is applied simultaneously.

If processes are included in the scope of the energy audit, the energy auditor can choose to apply EN 16247‑3, Energy audits — Part 3: Processes. If on-site transport on a site is included in the scope of the energy audit, the energy auditor can choose to apply EN 16247‑4, Energy audits — Part 4: Transport.