ISO 50001 | Achieve ESOS Compliance with NQA | NQA

The Energy Savings Opportunity Scheme (ESOS) is the mandatory energy assessment scheme for large enterprises.


We provide accredited ISO 50001 certification giving you:

  • Return on investment. ISO 50001 is has been proven to deliver return on investment through sustainable energy efficiency and improved performance.

  • Compliance by ESOS deadline. ISO 50001 can be implemented in less than 12 months and if you already have an Environmental Management System, you'll be roughly 67% ready. 

  • Viable alternative to ESOS Energy Assessments. ISO 50001 is a cost effective alternative to ESOS Assessments and provides additional benefits beyond compliance reporting.


If you already have an ISO 14001 environmental management system in place, then you are already on route to ESOS compliance.

      This indispensable ESOS Gap Guide will help you:ESOS-Gap-Guide.png

  •       - Build on your existing ISO 14001 system to
  •       achieve ISO 50001 compliance
    •       - Identify common elements between the two standards
    •       - Ease your path to ESOS compliance.

      Click here to DOWNLOAD your ESOS Gap Guide today.


Compliance deadlines have passed and enforcement notices for non-compliance will be issued by the Environment Agency. Non-compliance could incur the following:

  • Fines of up to £50,000
  • Charges of an additional £500 per day for every day of non – compliance for up to 80 days
  • Public naming and shaming of your corporate brand for its failure to comply.

Who qualifies for ESOS?

- any UK undertaking that meets either one or both of the conditions below:

  • it employs 250 or more people
  • it has an annual turnover in excess of 50 million euro (£38,937,777), and an annual balance sheet total in excess of 43 million euro (£33,486,489).

You also must take part in ESOS if your undertaking is part of a corporate group which includes another UK undertaking that meets either of these conditions. See the Environment Agency guidelines for more information about ESOS compliance and enforcement here


ISO 50001 certification must be issued by an accredited certification body, where the scope of accreditation covers the industry sector in which you operate.

NQA was the first certification body to achieve accreditation against the full scope of accreditation for ISO 50001 certification from UKAS (the United Kingdom Accreditation Service).

We can help you plan, implement and achieve accredited ISO 50001 certification, whatever your organisational structure and activity.


If you have questions about any aspect of ESOS compliance or ISO 50001 certification, call us on 0800 052 2424 or submit the contact form below. We'll be happy to help you.

If you choose to give us any personal information (for example your e-mail address) we will treat this information in line with our privacy notice which can be located here: submitting this information you are requesting further information about our services and a subsequent correspondence will be issued to you based on the information provided within this form.

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