Energy Savings Opportunity Scheme (ESOS)

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Why do we have the Energy Savings Opportunities Scheme?

In meeting the challenges to ever-increasing energy security risks, as well as reduce greenhouse gas emissions in a cost-effective manner, the Government has established the Energy Savings Opportunity Scheme (ESOS) to implement Article 8 (4-6) of the EU Energy Efficiency Directive (2012/27/EU).

Qualification Threshold

ESOS applies to all UK based organisations and their corporate groups that meet the qualification criteria below, and requires them to undertake a mandatory assessment, every four years, of energy use and energy efficiency opportunities across the organisation and its UK locations.

Any UK based company that either:

  • employs 250 people or more.

  • and/or has a turnover greater tha€50m and an annual balance sheet greater than €43m.

  • an overseas company with a UK registered establishment which has 250 or more employees paying UK income tax.


How do I comply with the regulations?


ESOS is a mandatory energy assessment and requires large organisations to measure their total energy consumption, their areas of significant energy consumption across their buildings, processes and transport. These audits identify and prioritise cost-effective energy savings recommendations. Compliance with Phase 2 must be completed and reported to the Environment Agency by no later than 5th December 2019. 


How Eco3 Partnership can help?

Eco3 Partnership provides a service that encompasses all of the aspects required under the ESOS Assessment and can provide as little or much of these aspects as your business requires. Where a business has it's own energy managers it may only require a review and Lead Assessor sign-off, or where required we can provide a full managed service to carry out every aspect of your ESOS Assessment, the choice is yours. These include:

  • Identify areas of significant energy consumption that account for at least 90% of the total energy consumption (Phase 2 work can be started now).

  • Measure the total energy consumption for buildings, industrial processes and transport (Phase 2 of this aspect can start on 1st January 2018).

  • Data collation for all aspects of energy consumption within the organisation across your buildings, processes and transport activities.

  • Site visits as required to carry out ESOS Compliant Energy Audits.

  • Provision of a full Site Energy Survey.

  • Energy consumption profiling.

  • Creation and maintenance of detailed and comprehensive ESOS Evidence Pack. 

  • Below are the Roles and Responsibilities that are normally allocated on a typical ESOS Assessment.

Call us on +44 (0)203 824 2402 (London) +44(0)141 239 2970 (Glasgow) or email us


What are the penalties for non-compliance?


  • a fixed penalty of up to £50000.

  • an additional £500 per day starting the day after non-compliance subject to an 80-day maximum.

  • and your organisation's name published for non-compliance.

Typical allocation of Roles and Responsibilities

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