What is ESOS and who needs to comply?
The Energy Savings Opportunity Scheme (ESOS) is a mandatory compliance scheme in the UK. It is the UK’s implementation of Article 8 of the EU’s Energy Efficiency Directive and introduces regular energy audits that will highlight energy savings for large organisations. These audits must cover 90% of your organisational energy and require sign-off from a qualified Lead Assessor.
The Energy Savings Opportunity Scheme occurs in four-yearly phases. It aims to reduce EU energy consumption by 20% by 2020. Routes to compliance include ESOS audits, Display Energy Certificates (DECs), Green Deal Assessments and ISO 50001.
Public bodies are not affected. Large organisations that must comply are classified as those with:
- More than 250 employees or
- A turnover of more than €50,000,000 and
- An annual balance sheet total of more than €43,000,000

Why comply with ESOS?
Penalties
The regulator – the Environment Agency (EA) – will have the authority to apply civil penalties against those mandated companies not participating in ESOS or found to be non-compliant with its requirements. In a worst case scenario, penalties could total £90,000.
Opportunities
With the right partner, initial compliance activities can be effectively the very first investment on the path to energy savings and cost reduction by implementing the energy efficiency measures identified.