Energy Saving
Opportunity Scheme
what is esos?
ESOS
The Energy Saving Opportunity Scheme (ESOS) is a mandatory UK government scheme requiring large organisations to measure their total energy consumption (covering buildings, transport and industrial activities) and complete an energy audit every four years. It’s purpose is to identify cost-effective energy-saving opportunities that help reduce energy use, cut costs and lower carbon emissions.
Legal Basis
ESOS was established by the Department of Energy and Climate Change (DECC) in response to the requirement for all Member States of the EU to implement Article 8 of the Energy Efficiency Directive 2012.
Meet Your Deadlines
We manage your entire ESOS compliance process from start to finish
Speak To Our Specialists
Giving you complete peace of mind that your organisation meets its legal obligations
Government Regulations
The regulations were implemented in the UK by The Energy Savings Opportunity Scheme Regulations 2014. It is consistently updated and managed by the Environment Agency.
Eligibility For ESOS
An organisation qualifies for ESOS if it is considered a ‘Large Enterprise’, i.e. you have more than 250 employees in the UK.
Or if you have fewer than 250 employees in the UK, your business must meet the following criteria:
This definition includes not-for-profit bodies outside the public sector, so long as they are large enough to meet the qualifying criteria.
Public bodies such as the emergency services, contracting authorities, educational institutions, NHS trusts and government departments are exempt from the ESOS directive.
Delivering ESOS Compliance With Confidence
Components of our Energy Audit
Selecting a Compliance Route
We identify how each significant energy area should comply with ESOS and complete the necessary assessments, including PAS 51215 audits or ISO 50001 certification.
Measurement of Energy Use
Our team evaluates the total energy consumption throughout your buildings, operational processes, and transport activities, using data-driven methods to evaluate performance.
Energy Saving Opportunities
Our team pinpoints the areas responsible for the vast majority (95%) of your energy use to prioritise the improvements that offer the best value and impact.
Lead Assessor Appraisal and Audit Deadlines
We complete your initial energy audit efficiently and have it reviewed and signed off by one of our accredited Lead Energy Assessors.
0%
Compliance Rate
Phases of Compliance
The Energy Savings Opportunity Scheme runs in four year compliance periods (phases). Each phase requires a new energy audit to be carried out.
Businesses that qualify at the qualification date (usually 31 December) must submit a notification of compliance by the phase deadline (usually the 5th December).
For ESOS Phase 4, the qualification deadline is 31 December 2026 and the compliance notification deadline is 5 December 2027.
ESOS Action Plan
An ESOS Action Plan is a formal document outlining how a business will improve energy efficiency following its Phase 3 audit, translating audit recommendations into practical actions.
AN ACTION PLAN INCLUDES:
Who Can Approve ESOS Action Plans and Updates?
The action plan and each subsequent progress update must be approved and signed by the company director (or equivalent) and submitted through the MESOS portal.
Do I Need to Submit?
If you did not qualify for ESOS in the third compliance period, you are not required to complete an action plan or any progress updates in the subsequent compliance period.
Annual Progress Updates
After submitting your ESOS Action Plan, you must provide an annual progress update for the following two years.
ACTION PLAN UPDATE DEADLINES FOR PHASE 4 ARE:
These updates must outline the progress made against the actions in your previous plan, including what has been completed, is in progress, or delayed.
Penalties For Non-compliance
While there is no legal requirement to implement every measure in the Action Plan, businesses must report on their progress. Failure to submit the action plan or provide updates may result in penalties.