ESOS Phase 4 Compliance & Energy Audits in London
Smart GreenTech Solutions provides ESOS Phase 4 compliance and energy audit services for qualifying organisations across London and Greater London. Our ESOS Lead Assessors support businesses throughout the compliance process, from determining eligibility and reviewing energy data to site audits, reporting and compliance notification.
Based in Central London, we work with organisations operating individual buildings and complex multi-site portfolios. Our approach combines ESOS compliance expertise with practical building-services and energy-engineering knowledge, helping organisations meet their regulatory obligations while identifying realistic opportunities to reduce energy consumption, carbon emissions and operating costs.
- Energy Institute Accredited ESOS Lead Assessors with extensive expertise to support your organisation through ESOS Phase 4.
- London-based consultancy, supporting organisations throughout London and Greater London.
- Support for Single & Multi-Site Organisations.
- End-to-End Phase 4 Support from eligibility and energy audits through to reporting and compliance.
ESOS Phase 4 Compliance for London Organisations
Your organisation must comply with ESOS Phase 4 if it meets one of the following criteria on the qualification date of 31 December 2026:
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Employ 250 or more people, or
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Have an annual turnover above £44 million and an annual balance sheet total above £38 million, or
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Are part of a corporate group that includes a UK undertaking meeting these thresholds.
Organisations operating in London may qualify for ESOS where the UK undertaking or corporate group meets the relevant Phase 4 qualification criteria. This can include businesses operating offices, hotels, retail estates, commercial property portfolios and other large or multi-site operations.
Our ESOS Compliance Services in London
ESOS Eligibility & Scoping
Review organisational structure, qualification criteria, previous ESOS assessments and the scope of the Phase 4 assessment.
Energy Data Collection & Analysis
Assessment of organisational energy consumption across buildings, transport and other relevant activities to identify significant energy consumption.
ESOS Energy Audits
On-site energy assessments of relevant buildings and operations across London and Greater London, identifying practical opportunities to reduce energy consumption and costs.
ESOS Lead Assessor Review & Reporting
Preparation and review of the evidence required to demonstrate ESOS compliance.
Compliance Notification & Action Planning
Support through the compliance process and subsequent action-plan/progress-reporting requirements where applicable.
Not sure if your organisation qualifies? Contact us and we can confirm.
ESOS Energy Audits in London
Our London ESOS energy audits examine how energy is being consumed in practice, rather than treating the exercise solely as a compliance requirement.
Depending on the site, this can include boilers, chillers, air conditioning and ventilation systems, controls and BMS operation, lighting, operating schedules, building fabric and other significant energy-consuming systems.
Since the inception of ESOS Phase 1, we have conducted ESOS energy audits across a wide range of London buildings, including commercial offices, multi-let buildings, retail and higher education premises, and mixed-use developments.
We work closely with facilities and real estate teams, building managers, landlords and other stakeholders to plan energy audits efficiently and minimise disruption to building operations.
Where an organisation operates sites both within and outside London, Smart GreenTech Solutions can provide a coordinated UK-wide ESOS compliance service.
ESOS Phase 4 Deadlines
31 December 2026
Phase 4 qualification date
Determine whether the organisation qualifies for ESOS Phase 4.
During the compliance period
Energy assessment and audits
Collect energy data, determine significant energy consumption, undertake site assessments and identify energy-saving opportunities.
5 December 2027
Phase 4 compliance deadline
Complete the required ESOS assessment and compliance notification.
Areas we cover across London
Central London
Covering Central London and the West End, including Westminster, the City of London, Camden, Islington, Kensington & Chelsea, and surrounding areas.
East London
Regular coverage across Tower Hamlets, including Canary Wharf, Newham, Hackney, Waltham Forest and Barking & Dagenham, and surrounding commercial areas.
West London
Serving Hammersmith & Fulham, Ealing, Hounslow, Brent and Richmond upon Thames, including key business corridors and sites near Heathrow.
South London
Coverage across Southwark, Wandsworth, Croydon, Greenwich and Lewisham.
Our ESOS consultants also support organisations with sites throughout Greater London, the South East and across the UK.
How much does ESOS Compliance cost in London?
The cost of ESOS compliance in London depends on the size and complexity of your organisation. Our fixed-fee quotations consider factors including:
- organisational structure
- number of sites
- total energy consumption
- significant energy consumption
- number and type of site audits required
- complexity of buildings/operations
- geographical distribution
- quality of existing energy data
- previous ESOS assessments and documentation
We can review your organisation's structure, energy profile and available information before providing a fixed fee proposal for your Phase 4 compliance.
Why choose Smart GreenTech Solutions as your ESOS Consultant in London?
Smart GreenTech Solutions is an independent, London-based building performance and sustainability consultancy, established in 2011. We provide practical ESOS compliance support that goes beyond meeting regulatory requirements to identify realistic opportunities to reduce energy consumption, costs and carbon emissions.
Accredited ESOS Expertise
Our ESOS Lead Assessors are accredited by the Energy Institute and are also CIBSE-accredited energy assessors and consultants, combining ESOS compliance knowledge with extensive experience in building services and energy performance.
London & Multi-Site Experience
We have delivered ESOS energy audits across London since Phase 1, working with commercial buildings and organisations with both individual sites and complex multi-site portfolios. We can also co-ordinate ESOS audits for organisations with sites across the UK.
Practical Energy-Saving Recommendations
We focus on practical, cost-effective measures with clear priorities and realistic paybacks. Our building services expertise enables us to look beyond the data and identify opportunities in areas such as HVAC operation, controls, BMS, lighting and building operation.
Independent, Clear Advice
As an independent consultancy, our recommendations are based on what is appropriate for your buildings and organisation. We provide clear, concise reporting designed to make ESOS findings and next steps easy to understand and act upon.
Integrated Energy Compliance Support
Where required, we can co-ordinate ESOS energy audits with TM44 air conditioning inspections, SECR reporting and wider energy efficiency projects, providing a joined-up approach across your property portfolio.
ESOS London FAQs
Need Help with ESOS Phase 4 Compliance in London?
If your organisation is preparing for ESOS Phase 4, Smart GreenTech Solutions can support you from initial qualification and energy data review through to site audits, Lead Assessor review and compliance notification.
Contact our London team to discuss your organisation, sites and Phase 4 requirements.
Call us: +44 (0) 3300 881451
Email:
Or: complete our short form to request a free ESOS Phase 4 consultation.