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The Energy Savings Opportunity Scheme (ESOS) was introduced to incentivise large UK based businesses to implement energy-saving measures and help to cut UK carbon emissions. The scheme requires affected businesses to carry out energy surveys accompanied by cost-effective recommendations to reduce energy demand and improve energy efficiency. It’s a mandatory requirement for organisations that must comply to produce an audit over a 12-month period once every four years.
Companies need to comply if they have:
If your accounts are quoted in pounds sterling, you should use the Bank of England exchange rate between the euro and pound sterling at close of business on the qualification date.
SMEs and public-sector bodies are generally exempt from the ESOS scheme.
Our team of CIBSE Accredited Low Carbon Assessors, Low Carbon Consultants and ESOS Lead Assessors can help you make the most of the ESOS energy scheme. They gained valuable insights during ESOS Phase 1 and 2 in supporting clients through the Environment Agency audit, which will benefit businesses in the ESOS Phase 3 compliance process.
Our team of lead assessors can support you in the following ways:
For more information, simply call us on 01908 690018 or contact us.
We are currently in Phase 3 of the scheme. Audits must be completed and reported to the Environment Agency by 5 December 2023.
The timings of each ESOS phase is shown here:
| Qualification Date | 4 Year Compliance Phase | Compliance Date | |
| Phase 1 | 31 Dec 2014 | 6 Dec 2011 – 5 Dec 2015 | 5 Dec 2015 |
| Phase 2 | 31 Dec 2018 | 6 Dec 2015 – 5 Dec 2019 | 5 Dec 2019 |
| Phase 3 | 31 Dec 2022 | 6 Dec 2019 – 5 Dec 2023 | 5 Dec 2023 |
If a qualifying organisation doesn’t meet the deadline, they can expect to receive a basic fine of £50,000, plus an additional fine of £800 per day up to a maximum of 80 days.
