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What is a Decaronisation Strategy?
How Does a business start decarbonisation?
What is the difference between Net Zero and Decarbonisation?
How long does a decarbonisation plan take?
If your business falls under the ESOS regulations, Changing Footprint provides ESOS and energy audit compliance services to ensure full conformity with legislation. Our accredited auditors analyse energy use across your sites, fleets, and processes — identifying cost-effective efficiency opportunities and delivering complete ESOS documentation.
An Energy Audit is a structured assessment of how energy is consumed across your buildings, transport and operations. It provides the foundation for identifying inefficiencies, quantifying potential savings, and developing a clear plan for improvement.
The Energy Savings Opportunity Scheme (ESOS) is a UK government initiative that requires large organisations to measure, assess and report on energy use and to identify cost-effective energy-saving opportunities. Beyond compliance, ESOS presents an opportunity to embed energy efficiency and carbon reduction within the core of your operational strategy.
Energy Audits — or Energy Surveys — offer a practical and cost-effective method for understanding energy use and identifying where and how reductions can be achieved. For many organisations, this process is the first step toward developing a structured Net Zero Pathway, enabling a data-driven approach to decarbonisation.
In the UK, ESOS regulations make energy audits mandatory for large companies, including a holisitc view of the operation, as opposed to a site based approach (taken by Audits). However, many organisations are now using the insights gained through auditing to strengthen their environmental credentials and support compliance with wider frameworks such as Procurement Policy Note (PPN 06/21) and Science Based Targets (SBTi).
Our audits are delivered through a clear, structured methodology that provides transparency, traceability, and actionable outcomes.
We begin with a comprehensive review of your energy data to understand consumption patterns, identify anomalies, and highlight potential areas of improvement. We also gather information on installed systems, equipment age, and operational conditions.
A detailed on-site survey follows, during which we assess your electrical distribution, lighting, heating, ventilation, and other energy-consuming systems. We also examine the building fabric — including windows, walls, roofs, and floors — and review occupancy or process schedules. Any on-site generation, such as solar installations is also documented.
The findings are consolidated into a structured report that outlines opportunities to reduce energy consumption, improve efficiency, and where applicable, generate renewable energy. Each recommendation is presented with clear financial and environmental metrics to support informed decision-making.
If your organisation:
We’ll confirm your qualification status, guide you through what’s required, and deliver everything you need to comply — accurately and on time.
To comply with ESOS, qualifying organisations must:
Failure to comply can lead to enforcement action and financial penalties — but with our structured process, you’ll have full confidence in your compliance position.
We deliver ESOS with the same precision, transparency, and client focus that define all our sustainability services.
Here’s how we work:
We confirm whether you qualify for ESOS, define your group structure, and agree the scope of buildings, transport, and processes included.
We gather (at least) 12 months of verified energy data from your systems, invoices, and suppliers, ensuring full coverage and data integrity.
Our consultants identify your areas of significant energy consumption (covering at least 95% of total use) and select representative sites for audit.
We conduct detailed site visits and energy audits, analysing performance and identifying practical, cost-effective savings opportunities.
We produce a comprehensive report and evidence pack that meets all legislative requirements and is aimed to be decision useful — clear, auditable, and director-ready.
Together, we prioritise opportunities, develop an action plan, and support director-level review and sign-off.
We handle the ESOS notification, maintain your evidence pack and can provide ongoing support with implementation, monitoring, and progress reporting.
Our process is transparent, efficient, and designed to deliver tangible benefits far beyond compliance.
We make ESOS simple — transforming complex regulatory requirements into actionable insight.
The audit process culminates in actionable intelligence — enabling you to prioritise investments and plan for long-term performance improvement.
Our reports typically include payback period estimates, whole-life cost assessments, and carbon impact evaluations. We work with you to align these opportunities with your strategic and operational objectives, creating a practical roadmap for decarbonisation and efficiency.
Where required, we can develop Investment Grade Proposals, translating recommendations into defined programmes of work with verified savings and robust business cases.
Ultimately, ESOS and Energy Audits are more than a compliance exercise — they are a strategic tool for reducing costs, mitigating carbon risk and strengthening the resilience and sustainability of your organisation.
Our consultants combine technical expertise with practical insight to help your organisation comply confidently, reduce energy costs, and strengthen your sustainability performance.
Whether you’re new to Energy Auditing and ESOS or looking to streamline your next compliance cycle, we’ll make the process simple, efficient, and valuable.
