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Energy Savings Opportunity Scheme

Sector: Private
Frequency: Every four years

Energy Savings Opportunity Scheme (ESOS) is a mandatory energy assessment scheme enforced by the Environment Agency, which requires qualifying organisations to report on their energy usage every four years.

Zenergi helped many organisations negotiate the  reporting requirements of the ESOS scheme, ensuring they were fully compliant ahead of the phase 1 and 2 deadlines.  The reporting requirements of the ESOS scheme can be complex, and many organisations that did not seek external support have been fined for non-compliance.

We have delivered over 200 Phase 1 and Phase 2 ESOS programmes covering in excess of 800 site audits. Phase 1 identified £26 million in energy savings, £13 million of which had a payback of less than one year. Phase 2 identified £35 million in energy savings, £22.4 million of which had a payback of less than one year.

Phase 3 of ESOS

ESOS is now in its third phase and eligible businesses must comply by December 2023. If you were very close to meeting the qualifying criteria in previous phases and your business has since grown then you should refer to the government guidance in regard to ESOS compliance which can be found here.

The main qualifying criteria is as follows:

Your business employs 250 or more people; or

You have an annual turnover in excess of €50 million (£44 million) and an annual balance sheet total of over €43 million (£38 million).

The Compliance Deadline is the 5th of December 2023.


How we can help

Our ESOS service offers access to qualified experts who can lead the data collection and reporting process through to compliance, in addition to driving a vigilant preparation process during non-reporting periods.

Our dedicated team of Chartered Energy Engineers, Energy Managers, Low Carbon Assessors and ESOS Lead Auditors are experienced in delivering energy savings and cost reduction programmes across the Public Sector, commercial/retail and in most industrial processes.

Our audits and surveys are built flexibly to meet clients’ needs from general opportunities surveys to detailed feasibility and preliminary designs.

Our survey tools, project registers and management systems are designed to assist the journey to implementation and verification of the savings.


Key benefits

Building Assessments

Compliant Energy audit

Cost savings opportunities

Board level involvement

Learn more

Are you ticking every box for energy compliance? Download our A to Z guide.

Please enter your details below to download

    Related Services

    Do you employ 250+ employees? Have you adhered to ESOS compliance obligation?

    Do you employ 250+ employees?

    Have you adhered to ESOS compliance obligation?

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      Part of the Zenergi family

      We are preferred partner and supplier to many associations including ASCL, WASBM, LASBM, BASBM, CAPSA and have been in partnership with some for over a decade. We regularly attend their conferences and give members the Positive Zenergi experience based on their needs.

      Zenergi are also an approved partner with the Institute of School Business Leadership, offering ISBL members the provision of a customer service specialising in energy procurement, invoice validation and contract management.

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