ISO 50001 LI key terms

A set of interrelated or interacting elements, including energy policy, objectives, energy targets, action plans and processes, used by an organization to achieve its energy performance goals.

The measurable results related to energy efficiency, energy use and energy consumption, determined by comparing against a baseline and tracked over time.

The manner or kind of application of energy, such as ventilation, cooling, heating, transport, production processes or lighting.

The quantity of energy applied or used by an organization, facility, process or equipment, usually expressed in kWh, GJ or fuel volume.

The ratio or other quantitative relationship between an output of performance, service, goods or energy and an input of energy.

A formal statement by top management of the organization's overall intentions and direction on energy performance, providing a framework for setting energy objectives and targets.

The person or group of people who directs and controls an organization at the highest level and has authority to commit resources and integrate energy management into business processes.

A measurable result or outcome to be achieved in relation to energy performance, consistent with the energy policy and set for relevant functions, levels and processes.

A detailed, quantified performance requirement, derived from an energy objective, that must be met in order to achieve that objective within a defined timeframe.

A documented scheme specifying the actions, resources, responsibilities, timeframes and methods for verifying results needed to achieve energy objectives and targets.

A systematic analysis of energy use and consumption based on measurement and other data, identifying significant energy uses and opportunities for improving energy performance.

An energy use that accounts for substantial energy consumption or offers considerable potential for improvement, and is therefore prioritized for management and improvement actions.

A quantitative reference or starting point for comparison of energy performance, established from data for a defined period and adjusted when relevant variables change.

A metric or measure of energy performance, such as energy per unit of output, defined by the organization and used to monitor and demonstrate improvement.

A factor that can materially affect energy performance, such as production volume, weather or occupancy, and must be considered when normalizing baselines and indicators.

The mathematical adjustment of energy performance data to account for changes in relevant variables, so that performance can be compared fairly with the baseline.

A person appointed by top management with defined responsibility and authority for ensuring the energy management system is implemented, maintained and reported on.

A cross-functional group of employees drawn from different functions and levels who support the implementation of energy management activities and improvement projects.

The demonstrated ability to apply knowledge and skills needed for a task or role, determined through education, training or experience and evaluated for effectiveness.

The state in which personnel understand the energy policy, their contribution to energy performance and the implications of not conforming with system requirements.

Information required to be controlled and maintained by the organization, including both documents such as policies and procedures, and records evidencing results.

The ongoing determination of the status of energy performance, energy use and other parameters by collecting data at defined intervals and by defined methods.

The process of determining a value by using instruments or methods against a known standard, providing quantitative data for energy performance and consumption analysis.

The comparison of a measuring instrument's output against a reference standard of known accuracy, ensuring data used for energy performance evaluation is reliable.

A systematic, independent and documented process for obtaining objective evidence and evaluating the energy management system against the organization's own criteria and requirements.

A periodic evaluation by top management of the energy management system's suitability, adequacy and effectiveness, resulting in decisions on improvement and resource allocation.

A failure to meet a requirement, whether of the standard, the organization's own system or a legal obligation, that requires correction and root cause analysis.

Action taken to eliminate the cause of a detected nonconformity and prevent its recurrence, proportionate to the effects of the problem.

The recurring process of enhancing energy performance and the energy management system over time, through repeated cycles of review, action and evaluation of results.

A measurable reduction in energy consumption per unit of output, or other verified enhancement of energy performance, compared with the established baseline.

A planned intervention, such as equipment replacement or process redesign, intended to reduce energy consumption or improve efficiency at a defined site or process.

The documented boundaries and applicability of the energy management system, defining the sites, processes, facilities and organizational units covered.

An independent third-party assessment of the energy management system against ISO 50001 requirements, typically comprising stage 1 and stage 2 audits.

The initial certification audit phase that reviews documentation and readiness to confirm the organization is prepared for the stage 2 assessment.

The certification audit phase that evaluates implementation and effectiveness of the energy management system through sampling of evidence at the organization's site.

Verifiable data, records or observed facts demonstrating that requirements have been met, used by auditors to support findings and conclusions.

An independent organization accredited to assess conformity with ISO 50001 and issue, maintain, suspend or withdraw certification based on audit results.

Formal recognition by an authoritative body that a certification body is competent to carry out specific conformity assessment activities, lending credibility to issued certificates.

A periodic audit conducted after initial certification to confirm continued conformity and effective maintenance of the energy management system during the certificate cycle.

A full reassessment performed before a certificate expires to determine whether certification should be renewed for a further cycle.