Energy Savings Opportunities Scheme (ESOS)

ESOS aims to cut business’ carbon emissions. Our Lead Assessors have over 10 years’ experience in ESOS audit. Find out if you're compliant.

We have 10 years’ experience with ESOS

ESOS is part of the UK’s aim to cut carbon emissions, ensuring all large businesses in the UK have energy reduction plans in place.

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Our fully qualified (STROMA) ESOS Lead Assessors have 10 years’ experience auditing for ESOS compliance. They’ll lead detailed investigations into how your business uses energy across its operations, analyse all data, and engage with staff and directors.

They’ll identify opportunities for energy reduction across your entire business, demonstrating where and how you can cut costs, and become fully compliant.

  • Which businesses need to be ESOS compliant?
  • Which businesses are already ESOS compliant?
  • What your business needs to be ESOS compliant:
Which businesses need to be ESOS compliant?
  • More than 250 employees.
  • An annual turnover of more than €50 million (£38.9 million) and a balance sheet exceeding €43 million (£33.5 million).
  • Part of a corporate group that has at least one large UK-based organisation.
Which businesses are already ESOS compliant?
  • Already have an existing energy management system that covers all assets and activities (including transport).
  • Certified to ISO50001 standards.
What your business needs to be ESOS compliant:
  • Energy auditing activity dating back to December 2011, including BS EN 16247 or ESOS Compliant Energy Audits ISO50002.
  • Energy certificates on display in buildings.
  • Non-domestic Green Deal assessment or ISO 50001 energy management systems

Energy Savings Opportunities Scheme

The Audit Process

An approved Lead Assessor will collect data on how much energy your business consumes across buildings, transport, and processes.

Buildings and industrial processes

Energy supplied to and used by the business, and any generated heat. This excludes recycled heat.


Fuel bought, any journey that begins or ends in the UK, company cars (excluding personal mileage), grey fleet vehicles, and cars used by staff for business (excluding commuting costs).

This doesn’t include shipping, logistics, flights, or railway travel unless your business operates its own ships, planes, and trains.

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