ESOS | The Energy Savings Opportunity Scheme



Do you need to comply to ESOS Phase 3?

Enistic are your safe pair of hands

ESOS Phase 3 Qualification Date









Compliance guaranteed

ESOS Phase 3 has started, download our free ESOS Phase 3 guide and start your journey now!


Download our ESOS Phase 3 quick guide, discover how you can save money, and make ESOS Phase 3 really count.


ESOS Phase 3

Deadline | Dec 2023

The deadline for ESOS Phase 3 compliance is the 5th of December 2023.

The data preparation period began on the 1st January 2021 meaning it’s time to act.

Prices are set to increase closer to the deadline, so save money by starting your Phase 3 journey now.

Enistic offers payment plans to all of our clients meaning that ESOS adds little disruption to any preexisting budgets.

Stay ahead of the competition by securing your quality lead assessor before resources begin to shorten.

ESOS Phase 2

Deadline | Dec 2019

  • The deadline for ESOS Phase 2 compliance was the 5th of December 2019.
  • You should have submitted your ESOS Compliance Report by the deadline.
  • If you haven’t you might have received an ESOS Enforcement notice. If you have, contact us ASAP so we can assist you.
  • Failure to comply with ESOS can lead to fines of up to £50,000 and public disclosure of non-compliance.
  • At Enistic we guarantee 100% compliance and we can act fast if you have received an ESOS Enforcement Notice.

Why Enistic?

The UK's Market Leader

  • We guarantee compliance – We are so confident in what we do that we guarantee compliance to every single one of our customers.
  • We have made ESOS a no-fuss experience. Our fully automated reporting process reduces annoying admin, meaning our service is cheaper for you!
  • Our lead assessors are some of the most qualified in the country.
  • Forget about scanning or photocopying, we will collect your data automatically for you.
  • Our Vantage Programme wraps all of your costs into a single monthly fee so you can budget with ease.

Back to basics


What is ESOS?

ESOS is the Energy Savings Opportunity Scheme and it was introduced by the UK Government to promote energy efficiency. The scheme was designed to ensure large enterprises are regularly assessing their energy usage every 4 years and, most importantly, to highlight energy savings opportunities as a mandatory practice. The next deadline for ESOS (Phase 3) compliance is the 5th December 2023.

How long does it take?

The take it takes to comply with ESOS varies from company to company. Each ESOS audit is different, that is why at Enistic we offer a free scoping meeting in order to fully understand the size and the needs of the organisation. From that meeting, we will be able to provide you with an estimated timing for your ESOS journey.

With over 10,000 companies needing to comply, it’s important to stay ahead of the competition and begin the route to compliance early. Failure to comply in time can lead to fines of up to £90,000.

How do I know if I need to comply?

Any organisation meeting any of the following criteria MUST comply with ESOS:

  • Have over 250 members of staff.
  • Or turnover of over 50 million Euros (£43 million) and an annual balance sheet total in excess of 43 million euro (£37 million).
  • Or be a part of a larger organisation that falls into either of these categories.


What's required to comply with ESOS?

On your ESOS report, you will need:

  • At least, the data regarding 90% of the energy consumed by the organisation has to be accounted for across all sites, including transport.
  • Must use 12 months’ verifiable data.
  • ESOS Assessments must be reviewed and signed off by a Board-level Director, and approved by a Lead Assessor and then reported to the Environment Agency.
  • Energy audits need to be conducted and data submitted every 4 years.
  • Failure to comply with ESOS can lead to fines of up to £50,000 and public disclosure of noncompliance.

Why should I choose Enistic?

Enistic are the UK’s market leader in ESOS compliance. Having done over 3,000 energy audits, we boast a 100% compliance rate! This means we saved our ESOS customers a huge £13.5m in non-compliance fines. We are proud of our work and our team of ESOS experts will help your company comply ESOS in the least disruptive way. Book a free meeting with one of our assessors and discover all that Enistic can do for you!





Download our ESOS Phase 3 guide and start your ESOS journey now!


Download our ESOS Phase 3 quick guide, discover how you can save money, and make ESOS Phase 3 really count.


Enistic Limited
enistic | The uk’s market leader in esos
Unit 4, Isis Business Park

Pony Road, Oxford


01865 598 776