Ensure Compliance and Unlock Energy Savings with ESOS Delivery
The Energy Savings Opportunity Scheme (ESOS) is a mandatory energy assessment and energy-saving identification scheme for large UK organisations.
Arthian provides expert ESOS consultancy to help you meet your legal obligations while identifying real opportunities to reduce energy use and cut costs. From audits to evidence packs, we guide you through every step, ensuring compliance and delivering value beyond the tick-box.
The ESOS Annual Review, introduced in Phase 3, should not be viewed as just another compliance requirement. We help our clients view this as a proactive opportunity to assess progress against your Phase 3 Action Plan and identify new energy-saving and decarbonisation opportunities.
At Arthian, we work in partnership with clients to turn this annual review process into a strategic checkpoint, helping you track implementation, update your plan with real-world results, and uncover additional efficiency gains. Our expert-led approach ensures that ESOS becomes more than a reporting obligation: it becomes a dynamic tool for driving savings, enhancing sustainability performance, and embedding long-term value into your energy strategy. By spreading the ESOS auditing process over an extended period and partnering with Arthian removes the last-minute compliance panic and ensures you are in safe hands for compliance and energy savings.
ESOS is a UK government scheme that requires large organisations to carry out energy audits every four years. These audits assess energy use across buildings, transport, and industrial processes, and identify cost-effective energy-saving opportunities.
You must comply with ESOS if your organisation:
The current ESOS timetable:
We offer a comprehensive ESOS consultancy, including:
We conduct fully compliant energy audits across your operations, including:
Our qualified ESOS Lead Assessors provide the following service:
We compile, and document all required evidence, including:
Already started your ESOS journey? We offer:
We conduct fully compliant energy audits across your operations, including:
Our qualified ESOS Lead Assessors provide the following service:
We compile, and document all required evidence, including:
Already started your ESOS journey? We offer:
Fully integrated with geotechnical, hydrological, and ecological disciplines.
National experience with regional insight and regulatory familiarity.
Deep understanding of planning, infrastructure, and environmental interfaces.
Commitment to technical rigour, clear communication, and long-term outcomes.
Non-compliance can result in enforcement action and fines of up to £50,000, plus daily penalties. It can also damage your organisation’s reputation.
Yes. If your organisation has a certified ISO 50001 energy management system covering all energy use, you are exempt from ESOS audits—but you must still notify the Environment Agency.
This depends on the size and complexity of your organisation. We recommend starting early to allow time for site visits, data analysis, and internal approvals.
Absolutely. ESOS audits identify energy-saving opportunities that reduce emissions and operating costs—making them a valuable part of your decarbonisation roadmap.
Yes. We work with clients across England, Scotland, Wales, and Northern Ireland, including multi-site and group structures.
We’d love to hear from you – whether you have a question, a project in mind, want to explore job opportunities, or just want to say hello.