ESOS Certification


Stroma Certification's ESOS Certification scheme is designed to certify ESOS Lead Assessors in line with the requirements of the Energy Savings Opportunity Scheme (ESOS). Our ESOS Register is approved by the Environment Agency on behalf of the Department for Business, Energy & Industrial Strategy. By becoming an ESOS Lead Assessor, individuals can work with large organisations to assess and reduce their energy consumption. ESOS Lead Assessors can also sign off improvements works as having been carried out using an appropriate methodology aligned to ESOS Scheme Guidance.

First year membership £0. Application pre-assessment training (1 day) £1,149. Annual membership renewal £250
All quoted prices exclude VAT.

What is the Energy Savings Opportunity Scheme?

ESOS is a mandatory energy audit scheme for all qualifying UK organisations who meet a given criteria, namely:

  • Organisations employing at least 250 people
  • Organisations with an annual turnover exceeding €50 million and an annual balance sheet total exceeding €43 million
  • Please refer to the website for more information regarding ESOS compliance criteria

Source: Environment Agency

Organisations who meet these criteria must undergo an ESOS audit every 4 years to assess their energy consumption. There is a requirement for organisations to notify the Environment Agency that they are compliant with the ESOS regulations within a given compliance period.

Compliance Phase Qualification Date Compliance Period Compliance Date Status
1 31 December 2014 From 17 July 2014 to 5 December 2015 5 December 2015 Ended
2 31 December 2018 From 6 December 2015 to 5 December 2019 5 December 2019 Current
3 31 December 2022 From 6 December 2019 to 5 December 2023 5 December 2023 Future
4 31 December 2026 From 6 December 2023 to 5 December 2027 5 December 2027 Future

Why join our ESOS Certification scheme?

ESOS energy audits can only be signed off by a qualified ESOS Lead Energy Assessor. ESOS compliance is mandatory for UK qualifying organisations and by adding your name to our ESOS Lead Energy Assessor Register you are demonstrating your ability to sign off their ESOS compliance work.

We also provide a one day ESOS training course.

ESOS application process

We would encourage applicants to download and read our ESOS members pack which provides information and the requirements for ESOS Certification. Our friendly customer service team is also available to answer any of your questions so please request a callback using our online form.

DEA Certification

Speak to our friendly customer team on
01977 665 420 (ext.603)

DEA Certification

Complete our customer callback form and we will call you to discuss your application

Candidates will need to be able to demonstrate sufficient competence in accordance with the requirements of PAS 51215. This includes a minimum length of two years of professional energy assessment and energy audit experience. We'll respond to your application within 72 hours to confirm your pre-assessment and training dates.

The pre-assessment takes place with a member of our ESOS team. It is designed to assess your skillset, analyse your application and measure your experience against the scheme requirements.

Certification Scheme Information

Stroma Certification's ESOS Certification scheme documents are made available to the public, applicants and certified Organisations through a downloadable ESOS Members pack that contains documents including the following:

ESOS Certification Application Form

To be completed for those Organisations requiring certification or alternatively the online application can be completed.

Scheme Handbook

Documents the certification scheme processes for granting, refusing, maintaining, renewing, suspending, restoring or withdrawing certification or expanding or reducing the scope of certification.

Impartiality Policy

Documents Stroma Certification's commitment to ensuring impartiality in all aspects of our certification and business activities. Further information is also available on the Consumer Advice page.

Complaints & Appeals Policy

Documents how a complaint or appeal can be notified to Stroma Certification and how it will be dealt with. Further information is also available on the Consumer Advice page.

Support Policy

Documents the means by which Stroma Certification can be contacted concerning ESOS certification and other business related activities.

Privacy Policy

Documents Stroma’s commitment and procedures for ensuring that the personal data collected and used in our certification and business activities is in accordance with the General Data Protection Regulation (GDPR) requirements. Further information is also available on the Data Protection page.

If you would like clarification on any aspect of the certification process please contact Stroma Certification by emailing or telephone our friendly team on 01977 665 420.

Membership Benefits

Approved ESOS Register

Technical Support

Dedicated ESOS trainers

apply now

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T | 0330 124 9660*

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