Audit processes

Our audit process for achieving certification, and our certification transfer process, are designed to be as straightforward as possible.

We keep the process for achieving management system certification straightforward. The stages follow a similar approach to other management system standards such as  ISO 9001 and OHSAS 18001 which your organisation may already be familiar with. When your organisation is ready to proceed with ISO 14001 and/or 50001 Certification, a dedicated client manager will guide your organisation through the relevant steps.

Audit Process


An application for certification can be made by completing our Contact Form. This form provides the Carbon Trust with information about your organisation so we can accurately define your certification requirements, including audit duration. Through this we can also gather an idea of where your organisation is in terms of  management system development.

Gap Analysis

This is an optional pre-assessment service where the Carbon Trust and your organisation gain insight into your current management system and compare it to the requirements of ISO 14001 and/or ISO 50001.

This helps to identify areas that need improvement and ensures you implement a management system that suits your organisation, saving you time and money before your formal assessment.


Stage 1: Review your organisation's preparedness for full assessment.

The audit/site visit will provide:

  • Confirmation of scope of certification
  • Assessment of your management system and its conformity to the standards requirements, focusing on the system design, legal requirements, internal audits, management review and training and communication.
  • An audit report that identifies any areas of concern or opportunities for improvement and an agreed corrective action plan, if required. This will be accompanied by an audit plan and date to proceed to Stage 2.

Stage 2: Confirmation the management system in place fully conforms to the requirements of the standard.

The audit/site visit will provide:

  • Assessment of the effectiveness of the management system in meeting its objectives, including the continual improvement of energy performance.
  • An Audit Report containing any nonconformities or opportunities for improvement, and corrective action plans if necessary
  • A Certificate of Conformity to ISO 14001 and/or ISO 50001.

If during the Stage 2 audit, any major nonconformities are identified, certification cannot be granted until correction/corrective action is taken. If this is not completed within 6 months a further Stage 2 audit may be required.

ISO 50001 Energy Management


When your organisation has passed the formal assessment your Certificate of Conformity to ISO 14001 and/or ISO 50001 is valid for three years.

This certification is then maintained through a programme of annual surveillance audits and a recertification audit on a three-year basis. Read more on ongoing certification page for next steps.

Find out more on combining the Carbon Trust Standard and ISO 50001

Get in touch

Contact us to find out how we can help you.

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