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ESOS Phase 4 Qualification date  
Submission Deadline 
    31st December 2026
 5th December 2027

  • Direct engagement - single contact

  • Fixed-fee

  • Inclusive from scoping to sign-off

  • ​Practical & Common-sense approach​

  • Maximise benefits whilst minimising cost and disruption

Enercert also provides Commercial EPCs and
Air-con Energy Inspection
Please visit Enercert's Blog for energy-saving hints and tips from ESOS surveys.
Contact or call for a no-obligation discussion of compliance, scope and cost for your organisation.

Request callback

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ESOS Phase 4
Compliance from a

Freelance Lead Assessor

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My name is Richard Weaver. I am a fully accredited freelance ESOS Lead Assessor and I trade under the name Enercert. 

I have undertaken many hundreds of site surveys through ESOS phases 1, 2 and 3, as employee, contractor and as direct consultant.

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I seek to serve clients at the lower end of the ESOS 'spectrum': those with up to around 500 employees or up to a dozen business locations.    However, my experience extends through all forms and types of organisation.​

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Enercert Phase 3
Clients include -

Bloom & Wild

Karndean

Zebra Technologies

Cox Automotive

DPRG Group

Regal Construction

Crane Payments

Heritage Manor

Internet Florists

Vinyl Flooring

Barcodes & Tagging

aka Manheim Auctions

Exhibition & Media

Construction

Manufacturing

Care homes​

ESOS Phase 4

'Phase 4' is the fourth iteration of  ESOS,  the first being 'Phase 1' in 2014.

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Thanks to the enforcement activities of the Environment Agency , most of those falling into the requirement for Phase 4  will have undertaken Phase 3, and should therefore be familiar with the basics of the ESOS 'process'.

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The best preparation for Phase 4 is to begin early in the accumulation of energy consumption data for all sites, activities and transport. This data will be analysed and transcribed by the Lead Assessor.

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This consumption data must cover a continuous 12-month period which includes the 31st December 2026. The chosen 12 months could be the calendar year 2026, or as chosen by the organisation, such as an accounting or academic year.  

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As with Phase 3, an online "Notification of Compliance" is required.​​​​​

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With Enercert, the roles and responsibilities are clear:-

Objective

To provide ESOS compliance in respect of UK operations of  the Client. This is envisaged to comprise.

  • An ESOS compliant report document.

  • ‘Notification of Compliance’,  

  • ESOS compliant ‘Evidence Pack’.

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Activities.

Richard Weaver t/a Enercert undertakes to:

  • To fulfil the role of ESOS Lead Assessor 

  • Receive and anlayse energy data

  • To undertake site Energy Audits 

  • Complete energy analysis and savings recommendations

  • Complete and issue ESOS documentation

Clients Responsibilities.

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The Client has ultimate responsibility under the regulation for compliance.

 

With regard to the ESOS project, the Client  is required to:

  • Provide full energy consumption data.

  • Allow and guide access for site energy assessment 

  • Provide such other organizational data as required, including corporate structure and 'Intensity ratios'.

  • Complete the online ‘Notification of Compliance'.​

For Phase 3 Enercert charged between £1,100 and £8,000

Summary and Contact

Enercert Offers :-
  • ESOS Phase 4 compliance from an accredited Lead Assessor 
  • Fixed fee, direct contact service
  • Typically but not exclusively for organisations at the lower end of the ESOS 'spectrum' -  
    • 250 to 500 employees​
    • Eight to a dozen site locations
  • A common-sense and co-operative approach aiming at energy-saving as well as compliance.
  • Over a decade of experience in energy surveys and assessment.

Request callback

or call 07812 050385
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