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Perform an Internal Audit

Ball 7Step 7: Perform an ISO 50001 Internal Audit

An External Audit is conducted by a person outside your organization such as a customer or an independent third party organization like a Registrar to verify you conform to the applicable requirements

An Internal Audit is used to assess conformity, evaluate effectiveness, and identify opportunities for improvement. Internal audits also help you prepare for external audits.

It is necessary to show that the ISO 5001 EnMS is effective.  Use our Internal Audit Check List to streamline this step.  During the audit you compare your EnMS to the Standard.

You will begin once your system has been implemented and will need to perform internal audits before your Registration Audit. The Registration Audit is the audit which is performed by the Registrar who will issue your ISO 50001 Certificate upon successful completion of that audit.

Before your Registration Audit, you will need to use and improve your system for 2-3 months. Read about using and improving your system in Step 6 for more details.

We have a “Get a Quote” tool on our site. The tool sends a Request for Quote to at least 3 different Registrars. Remember they are in your market – have them compete for your business.

Choose Your Audit Team

You will want to have a number of trained internal auditors for your audit program. You will be auditing each area of your facility once or twice a year, with an audit team of 1 to 4 auditors depending on the size of the area. You will want to have enough auditors trained so that the auditors will not audit their own area, and so that you are not pulling one person away from their work too often. A general guidance number is 10% of the total number of employees; a company with 50 employees would train 5 auditors, and a company of 100 would train 10. As the number of employees goes up, the percentage would go down.

Look for employees that have a strength in investigating issues and that are good communicators. The better people skills the auditors have, the smoother your audits will be performed.


Our All-in-One Certification Package is a proven, efficient system. It gives you all you need to prepare for registration – in one simple to use package.

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