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The ISO Show Episode 11: An Introduction to ESOS

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With the ESOS phase 2 deadline looming, do you know if you qualify? And if so, do you know what to do to comply? In this week’s podcast we will look at what ESOS is and briefly cover the various methods for compliance.

Podcast highlights:-

What is ESOS?

The Energy Saving Opportunity Scheme (ESOS) was launched for consultation by the Department of Energy and Climate Change (DECC) in July 2013. This scheme is a mandatory energy assessment and energy savings identification scheme for ‘Large Enterprises’.

A Large Enterprise is defined as:-

  • Having more than 250 employees
  • An annual turnover exceeding €50 million or an annual balance sheet total exceeding €43 million

The pubic sector is not required to participate.

Who qualifies?

  • Limited companies
  • Public companies
  • Trusts
  • Partnerships
  • Unincorporated associations
  • Non-for-profit bodies

ESOS Phase 2 Deadline: 5th December 2019


  • Estimated to lead to £1.6 billion net benefits to the UK
  • ESOS energy audits have the potential to increase business profitability and competitiveness.
  • Helps to identify energy efficiency measures

What do you have to do to comply?

  • Measure your total energy consumption
  • Conduct energy audits to identify cost- effective energy efficiency recommendations
  • Report compliance to the Environment Agency (as the scheme administrator)

ESOS energy Audits:

  • Use 12 months of energy consumption data
  • Produce cost-effective recommendations for the area being audited or confirm that there is no scope for cost-effective energy efficiency improvement
  • Be overseen, conducted or reviewed by an ESOS Lead Assessor

Areas for potential energy saving:-

  • Buildings
  • Industrial Processes
  • Transport
  • Employees

Potential routes for compliance:

  • ESOS Energy Audits
  • ISO 50001
  • Green Deal Assessments
  • Display Energy Certificates

Listen to our previous 10 episodes by subscribing to us on iTunes or Soundcloud

And click HERE for further information on how we can help you with ESOS.

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