Overview
ISO 50002:2014 - "Energy audits - Requirements with guidance for use" defines a standardized, repeatable process for conducting energy audits focused on energy performance. Applicable to all types of organizations, establishments and all forms of energy use, the standard specifies principles, common processes and required audit deliverables (e.g., energy balances, EnPIs and improvement recommendations). ISO 50002:2014 includes informative guidance (Annex A) and presents the audit process in a chronological sequence while allowing iterative steps.
Key topics and requirements
- Scope and applicability: Energy audits can cover one or more boundaries (site, system, equipment, fleet) and all energy forms and uses.
- Audit principles: Objectivity, confidentiality, access to information, and competent personnel are core principles.
- Energy auditor competence: Auditors shall possess relevant education, technical skills, experience and knowledge of legal requirements and the standard. Lead auditors require team management skills.
- Audit process steps (as structured in the standard):
- Planning and defining the audit objective, scope and boundaries
- Opening meeting and stakeholder alignment
- Data collection including historical energy use, drawings and operational data
- Measurement plan specifying what and how to measure during site visits
- Site visit and observations of energy use and controls
- Analysis to develop energy balances, EnPIs and quantify opportunities
- Reporting: documented findings, ranked recommendations for energy performance and financial benefits
- Closing meeting to present results and agree next steps
- Deliverables: Energy balance, quantified opportunities for improved energy performance, energy performance indicators (EnPIs), and a clear, actionable audit report.
- Limitations: ISO 50002:2014 does not set requirements for selection/evaluation of audit bodies or for auditing an organization’s energy management system (see ISO 50003).
Practical applications
Who uses ISO 50002:2014:
- Energy managers and sustainability teams seeking structured audits to identify efficiency opportunities.
- Energy consultants and ESCOs conducting third‑party audits and preparing investment-grade recommendations.
- Facility managers and operations teams integrating audit outputs into maintenance and retrofit planning.
- Regulators and procurement teams specifying audit requirements for compliance or funding programs.
Benefits and use cases:
- Identify and prioritize energy-saving measures with quantified energy and financial impact.
- Support implementation and monitoring under energy management systems (e.g., ISO 50001).
- Provide transparent, comparable audit outputs for decision-making and investment appraisal.
Related standards
- ISO 50001 - Energy management systems (context for EnPIs and monitoring)
- ISO 50003 - Requirements for bodies providing audit services (competence and evaluation)
- Other national or sector standards and guidelines (referenced in ISO 50002 bibliography)
Keywords: ISO 50002:2014, energy audits, energy performance, EnPI, energy audit reporting, measurement plan, energy balance, energy audit standard.
