ISO 50006:2023

Overview

ISO 50006:2023 - Energy management systems - Evaluating energy performance using energy performance indicators and energy baselines - provides practical guidance for establishing, using and maintaining energy performance indicators (EnPIs) and energy baselines (EnBs). Aligned with ISO 50001:2018, this second edition helps organizations measure, monitor and demonstrate energy performance improvement through robust data handling, normalization and reporting. The guidance is applicable to any organization regardless of size, sector or maturity in energy management.

Key topics and technical requirements

• EnPI and EnB concepts: Definitions, purpose and documentation requirements for EnPIs and EnBs, including the need to retain data and methods used for baseline determination.
• Boundary and baseline period: Guidance on defining physical, virtual and organizational boundaries and selecting an appropriate baseline period for comparison.
• Data collection and quality: Recommendations on collecting energy-related data, measurement approaches, data frequency, data quality controls and outlier identification.
• Model approaches for EnPIs: Options for expressing EnPIs using statistical models, aggregated models and engineering models, with annex examples (including multivariate analysis).
• Normalization: Methods to account for relevant variables (e.g., production levels, weather) so energy performance comparisons reflect equivalent conditions; includes uncertainty considerations.
• Maintenance and adjustments: Managing changes in static factors, updating EnPIs/EnBs and maintaining documented information over time.
• Monitoring, reporting and demonstration: Practical steps to monitor and report energy performance and to demonstrate energy performance improvement per ISO 50001 requirements.
• Informative annexes: Planning process, sample EnPI boundaries, example EnPIs, stepwise normalization examples, multivariate normalization and aggregated reporting examples.

Applications and users

ISO 50006:2023 is intended for:

• Energy managers and sustainability officers implementing or supporting an energy management system (EnMS).
• Facility managers, operations teams and engineers who need to quantify and report energy performance.
• Consultants, auditors and project teams conducting energy performance evaluations, monitoring, and savings verification.
• Organizations aiming to reduce energy costs, improve competitiveness, and lower energy-related greenhouse gas emissions.

Practical applications include setting performance targets, verifying energy savings, normalizing energy use for production or weather variations, operational control, and communicating results to top management.

Related standards

• ISO 50001:2018 - Energy management systems - Requirements (ISO 50006:2023 provides guidance to meet ISO 50001 requirements).
• Work prepared by ISO/TC 301 (Energy management and energy savings).

Keywords: ISO 50006:2023, energy performance indicators, EnPI, energy baselines, EnB, normalization, ISO 50001, energy management systems, monitoring and reporting.