Client Blog: ESOS is approaching


ESOS is approaching

Don’t get caught out

The Energy Savings Opportunity Scheme (ESOS) is a legally mandatory energy assessment and energy saving identification scheme for large undertakings, including corporate groups. The scheme applies throughout the UK. ESOS applies to organisations that have either:

  • 250 or more employees in the UK
  • Fewer than 250 employees, but has an annual turnover exceeding €50m and a balance sheet exceeding €43m
  • Is part of a corporate group that includes an undertaking that meets the above criteria.

It excludes the public sector but does include charities. ESOS compliant energy assessments will be mandatory under law and subject to fines up to £50,000 for non-compliance.

How do I become compliant?

Applicable organisations must ensure that at least 90% of their total energy consumption is subject to:

  • An ESOS compliant energy audit
  • A certified ISO 50001* Energy Management System
  • A Display Energy Certificate
  • A Green Deal Assessment

*ISO 50001:2011 is the international management system standard for energy management.

How DIEM Ltd can help:

DIEM Ltd has a track record of implementing ISO 50001:2011 energy management systems with clients in the UK and overseas.

Building on this track record, we are already advising and supporting clients to measuring and monitoring energy use in order to comply with ESOS.

This is by preparing Clients for ESOS compliance by supporting implementation of an energy management system to the ISO 50001:2011 standard, conducting energy review audits and in 2015 delivering ESOS Assessments*.

*ESOS Assessments subject to registration

About DIEM Ltd

DIEM Ltd was established in October 2005 by David Inman FRICS CEnv and has delivered environmental and energy work to commercial and public sector Clients throughout the UK and worldwide.

DIEM Ltd has implemented ISO 14001 environmental management systems throughout the UK and ISO 50001 energy management systems worldwide.

This has been working for a range of Clients as varied as:

  • Crossrail
  • Channel Tunnel Rail Link
  • Some of the top 100 “UK Superbrands”
  • Construction main contractors
  • Leading universities
  • NHS
  • Local Authorities
  • International FM organisations
  • Specialist construction contractors
  • Small family-run businesses.


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