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The Energy Savings Opportunity Scheme, or ESOS, is a mandatory government initiative to promote energy efficiency in large organisations.

All information must be compiled into a report to be submitted to the Environment Agency in time for the December deadline.

Any large organisation incorporated in the UK, except public bodies, will need to comply with ESOS if it has:

  • Over 250 employees;
  • Or a turnover of €50 million (approximately £42,750,000) and an annual balance sheet more than €43 million (approximately £36,750,000);
  • Or is part of a larger organisation which meets the above criteria.

Your whole company group must comply with ESOS, including any SMEs the group owns. Franchisees are not affected by the scheme.


You may be asking yourself what exactly ESOS compliance is. Essentially, it is a measurement of your total energy consumption, combined with audits that look into your energy efficiency (delivered by an accredited ESOS lead assessor).

The Carbon Trust estimates that the energy reduction opportunities most businesses will uncover in the audits could deliver savings in excess of 13.5 times the cost of compliance, so ESOS could help to reduce energy costs and make a big impact on the bottom line.

Is your company one of the 10,000 businesses that needs to comply? If so, the ESOS Phase 2 compliance deadline is on Thursday, 5 December 2019. Failure to comply could result in a fine of up to £50k plus an additional £500 per day. Penalties have already been issued for Phase 1 so don’t get caught out in order to avoid fines and being publicly named.

We are working with many businesses across the UK to support their ESOS compliance. So if you’re reading this and think your business needs to comply, please get in touch here or via the form below to see how we can assist with your ESOS report as soon as possible.

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Nathalia Ward

Author Nathalia Ward

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