ESOS (Energy Savings Opportunity Scheme) is a mandatory energy assessment scheme for large organisations in the UK that meet the qualification criteria.

Organisations must carry out audits of their energy use to identify cost-effective energy saving measures.

ESOS Phase 3

The deadline for phase 2 passed on 5 December 2019.

ESOS is now in phase 3 – and the deadline for compliance is 5 December 2023. These pages help you stay briefed on phase 3 with the latest information, news, analysis and answers to your  frequently asked questions.

Compliance and Net Zero Pocket Guides