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Home| Insights| Get Ahead of ESOS Phase 4: How Arthian Can Help Your Business Save Energy and Stay Compliant
Decarbonisation
Environmental Permitting
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Get Ahead of ESOS Phase 4: How Arthian Can Help Your Business Save Energy and Stay Compliant

30th October 2025

Get Ahead of ESOS Phase 4: How Arthian Can Help Your Business Save Energy and Stay Compliant

With the compliance deadline for ESOS Phase 4 set for 5 December 2027, now is the time for obligated organisations to start planning.

The Energy Savings Opportunity Scheme (ESOS) is a mandatory energy assessment and savings identification programme for large UK businesses, and it’s designed to help organisations uncover cost-effective ways to reduce energy consumption.

At Arthian, we bring over 25 years of experience in energy efficiency and sustainability, supporting clients across sectors including food and drink, aerospace, industrial manufacturing, construction, chemicals, and waste management. Whether you’re new to ESOS or looking to improve the value of your audits, our team is here to help you navigate compliance and unlock meaningful savings.

ESOS

Comprehensive ESOS Support

We offer a full suite of ESOS services, including:


     

  • Lead Assessor Services: Our certified Lead Assessors oversee and review your ESOS audits and ensure your overall assessment meets regulatory requirements.
  • Energy Audits: We conduct detailed audits to identify energy-saving opportunities tailored to your operations.
  • Action Plans and Progress Updates: Beyond compliance, we help you develop practical action plans and track progress year-on-year to ensure continuous improvement.


 

Our approach goes beyond ticking boxes. In Phase 1 alone, our clients identified over £25 million in savings across 130 individual sites. We’re confident we can help your business do the same.

ISO 50001: An Alternative Route to Compliance
If your organisation is certified to ISO 50001, you can use this as an alternative route to ESOS compliance. Arthian can support you in:
 

  • Developing and implementing ISO 50001 energy management systems
  • Auditing and integrating ISO 50001 with other standards such as ISO 9001 (quality), ISO 14001 (environmental), and ISO 45001 (health and safety)


 

For companies with an annual energy spend over £200,000, the payback period for ISO 50001 implementation is typically less than one year, with savings continuing to accrue. It also aligns with corporate greenhouse gas reporting requirements, making it a smart investment for businesses committed to sustainability.
 

Tailored Advice and Sector Expertise
One of the key reasons clients choose Arthian is our sector-specific knowledge. We understand the unique energy challenges faced by different industries, which means we can offer informed, relevant recommendations without needing extensive onboarding time.
 

Our advice is independent and impartial, and we tailor our support to your business’s specific needs. Whether you’re a manufacturer with complex energy systems or a logistics firm with multiple sites, we’ll help you identify the most effective strategies for reducing energy use and improving operational efficiency.

 

Supporting Compliance Across the UK and EU
Arthian also supports organisations in EU member states with compliance under Article 8 of the 2012 European Union Energy Efficiency Directive, which mirrors ESOS requirements. Our international experience ensures consistency and quality across your operations, wherever they’re based.
 

We’re also proud to have been awarded the ESOS Compliance Auditing contract by the Department of Agriculture, Environment and Rural Affairs (DAERA) for Northern Irish participants, demonstrating our deep understanding of regulator expectations and our trusted reputation in the field.

Energy Saving Opportunity Scheme

Start Early, Save More

With the Phase 4 deadline still two years away, now is the perfect time to start preparing. Early action means:


     

  • More time to identify and implement savings
  • Better integration with business planning and budgeting cycles
  • Reduced risk of non-compliance and last-minute stress


 

Whether you’re looking to appoint a Lead Assessor, conduct energy audits, or explore ISO 50001, Arthian is ready to support you every step of the way.
 

Ready to get started? Contact our team today to discuss your ESOS strategy and discover how we can help your business save energy, reduce costs, and stay compliant.

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