ESOS Quick Facts

March 12, 2015

Essential ESOS Information:

WHAT IS IT?

Introduced by the Government to promote energy efficiency, the ESOS (Energy Savings Opportunity Scheme) Regulations require large enterprises to conduct mandatory energy audits every 4 years. This covers:

•All organisations with over 250 members of staff.

•Or turnover of over 50 million Euros (£38,937,777) and an annual balance sheet total in excess of 43 million euro (£33,486,489).

WHAT’S REQUIRED?

The Requirements

•90% of energy consumed by the organisation has to be accounted for across all sites, including transport.

•Must use 12 months’ verifiable data.

•ESOS Assessments must be reviewed and signed off by a Board-level Director, and approved by a Lead Assessor and then reported to the Environment Agency.

•Organisations need to comply by submitting their first energy consumption reports by 5 December 2015.

•Energy audits need to be conducted and data submitted every 4 years.

Failure to comply with ESOS can lead to fines of up to £50,000 and public disclosure of noncompliance.

The two most common approaches to ESOS compliance are:

•Undertaking ESOS audits and producing an evidence pack to be signed off by a lead assessor.

•ISO 50001 certification for the whole of the organisation which will count as compliance.

Click here to see how ESOS and ISO 50001 compare.

HOW LONG DOES IT TAKE?

On average compliance takes between 2 – 4 months from the first scoping meeting to submission.

With 10,000 companies needing to comply from now until 5 December, there is increasing pressure to begin the route to compliance.

HOW MUCH DOES IT COST?

ESOS compliance can cost anywhere from £2,500 – £20,000+

Each organisation is different, that is why we offer a free scoping meeting to outline an action plan and identify the costs involved – as well as the potential for energy cost savings.

After the scoping meeting a fixed price for ESOS compliance will be determined, from £2,500.

Please call 0844 8751600 if you’d like to arrange a free scoping meeting, or have any questions.

Book a demo

Talk to our team to:

  • Explore how Enistic is effectively used by companies to track, analyse, and report their carbon emissions.
  • Discover seamless methods for data gathering and integrating Enistic into your team's daily workflow with minimal disruption.
  • Seek custom solutions and receive tailored support.
  • Explore pricing options suitable for your company and your needs.

Our Latest Blog Posts

How To Get Supplier PCF Data for EPDs and LCAs

You have commissioned an EPD. Data has been collected. The LCA practitioner starts building the model and comes back with a list: this supplier figure covers different modules, that one was calculated under the previous version of the standard, this one has expired,...

ESOS Phase 4 Costs and Deadlines in the UK for 2026

Most organisations think of ESOS as just an audit, a signature, or a notification, often filed and forgotten for four years. The ones getting value from it treat the audit as the input to something else. Phase 4 asks you to identify cost effective energy savings...

How to Measure Supply Chain Emissions for CSRD

Measuring your supply chain emissions and producing a CSRD ready disclosure are two different jobs, and the second one is where most programmes stall. A number in a spreadsheet is not a disclosure. Under CSRD you have to justify why you reported that category at all,...

What Is Scope 3 Emissions Measurement in 2026

Scope 1 and Scope 2 are, by comparison, easy. You own the boilers. You pay the electricity bills. The data exists somewhere in your organisation and someone can go and find it. Scope 3 is different, because it sits almost entirely in other people's businesses. Your...

How to Align SBTi Target Setting With CSRD in the UK

Most UK sustainability leaders are running two projects that should be one. On one side, a science based target: baseline, boundary, validation submission, a decarbonisation plan the board will actually fund. On the other, a CSRD data request from a European parent or...

How to Choose SECR Software for UK Groups in 2026

If you handle SECR for a group with multiple subsidiaries and sites, you already know the disclosure itself is not the difficult part. It is a handful of figures and a short narrative in the directors' report. The difficult part is pulling clean, consistent,...

How Enistic Keeps Your Emission Factors Current

Carbon calculations are only as reliable as the emission factors behind them, the figures that convert a litre of fuel or a kilowatt-hour of electricity into a CO2 equivalent number. These factors change over time as governments update their methodology and underlying...

How Enistic AI Calculates Your Carbon Footprint

"What's our carbon footprint?" sounds like a simple question. Getting a reliable answer is not simple at all, it depends on gathering the right data, applying the right emission factors, and adding it all up correctly across every scope. This post explains, in plain...

How Your ESOS or SECR Report Gets Signed Off

By the time a report reaches its final form, whether for ESOS, SECR, or another framework, it has been through data collection, calculation, and review. But before it's ever submitted, one more step happens: sign-off by a qualified person. This post explains what that...

How Enistic Keeps Your Data Secure

If you are trusting a platform with your organisation's energy, emissions and supplier data, security is not a nice-to-have question, it is the first one. Before any business commits to automating its carbon reporting, it needs to know where that data goes, who can...
Loading...
BICS Application £35 to £40 per MWh off your electricity bill, every year for five years. Government relief for UK manufacturers. Applications run from 1 October to 30 November 2026.Check if you qualify
+