An electrical audit is a comprehensive, independent assessment of your business’s entire electrical infrastructure. It goes well beyond a basic visual inspection or routine testing — it is a systematic evaluation of every electrical system, installation, and process within your premises to determine whether they are safe, compliant, and operating efficiently.
For facilities managers and business owners responsible for commercial or industrial premises, understanding what an electrical audit involves — and when you need one — is essential for managing risk, maintaining compliance, and controlling long-term costs.
What Does an Electrical Audit Involve?
A thorough electrical audit conducted by a qualified contractor will typically cover the following areas:
- Visual inspection — a detailed assessment of all visible electrical installations, distribution boards, cabling, and equipment for signs of damage, deterioration, or non-compliance
- Testing and measurement — dead testing and live testing of circuits, earth fault loop impedance, insulation resistance, RCD operation, and continuity
- Documentation review — examination of existing electrical certificates, test records, maintenance logs, and as-built drawings to identify gaps or expired documentation
- Load analysis — assessment of whether current electrical loads are within the design capacity of the installation, identifying overloaded circuits or underutilised capacity
- Energy efficiency assessment — identification of opportunities to reduce energy consumption, improve power factor, and lower operating costs
- Compliance gap analysis — a systematic check against current regulations, standards, and codes of practice, highlighting areas of non-compliance
- Risk assessment — identification of potential electrical hazards and recommendations for remedial action, prioritised by severity
The output of an electrical audit is typically a detailed report that documents findings, identifies non-conformities, and provides clear, prioritised recommendations for remedial work and improvements.
Why Does Your Business Need an Electrical Audit?
There are several compelling reasons to commission an electrical audit, whether you are legally obliged to do so or choosing to do so proactively.
Legal Compliance
Under the Electricity at Work Regulations 1989, employers and duty holders have a legal obligation to maintain electrical systems in a safe condition. The Health and Safety at Work Act 1974 places further general duties on employers to ensure the safety of their employees and anyone affected by their operations.
For certain types of premises — including commercial properties, industrial facilities, and public-facing buildings — failure to maintain compliant electrical installations can result in enforcement action, fines, or prosecution. An electrical audit provides documented evidence that you are meeting your legal obligations.
Safety
Electrical faults remain one of the leading causes of fires in commercial and industrial premises. An audit identifies potential hazards before they become incidents — deteriorated insulation, overloaded circuits, improper earthing, and outdated protection devices. The cost of an audit is negligible compared to the potential consequences of an electrical failure.
Insurance Requirements
Many commercial insurance policies require evidence of regular electrical inspection and testing as a condition of cover. Without current, valid documentation, your insurer may dispute or decline claims arising from electrical incidents. An electrical audit ensures your documentation is comprehensive and up to date.
Operational Efficiency
An audit often reveals opportunities for significant cost savings. Inefficient lighting systems, poor power factor, oversized or undersized equipment, and ageing infrastructure all contribute to unnecessarily high energy bills and maintenance costs. The recommendations from a thorough audit can deliver meaningful returns through reduced energy consumption and fewer unplanned breakdowns.
How Often Should You Audit?
The frequency of electrical auditing depends on the type of premises, the nature of operations, and the age and condition of the electrical installation. As a general guide:
- Commercial offices and retail — every 5 years, or at change of occupancy
- Industrial premises — every 3 years, or more frequently in harsh or demanding environments
- Hospitality and public-facing venues — every 5 years as a minimum, with annual visual inspections recommended
- Properties with older installations — more frequent auditing is advisable for installations over 25 years old
These are guidelines rather than absolute rules. A risk-based approach — informed by the condition of the installation, the criticality of the operations it supports, and any history of issues — is the most effective way to determine the right audit frequency for your specific premises.
Electrical Audit vs. Basic Testing: What Is the Difference?
It is important to understand the distinction between an electrical audit and a standard Electrical Installation Condition Report (EICR). While they are related, they serve different purposes.
An EICR is a formal document that records the condition of an electrical installation against the requirements of BS 7671. It involves inspection and testing, and it classifies any defects using a standardised coding system (C1, C2, C3, FI). An EICR is focused primarily on the fixed wiring installation.
An electrical audit is broader in scope. It encompasses the EICR findings but also examines energy efficiency, operational practices, maintenance regimes, documentation, compliance with additional regulations beyond BS 7671, and strategic recommendations for improvement. An audit takes a holistic view of your electrical infrastructure in the context of your business operations.
For most commercial and industrial clients, we recommend a comprehensive audit rather than testing alone. The incremental cost is modest, and the additional insights and recommendations deliver significantly more value.
What to Expect During the Process
If you are commissioning an electrical audit for the first time, here is what you can typically expect:
- Pre-audit preparation — your contractor will request access to existing documentation (previous test certificates, drawings, maintenance records) and discuss any known issues or concerns
- Site survey — the audit team will conduct a thorough inspection of your premises, which may require access to distribution boards, risers, plant rooms, and all areas served by the electrical installation
- Testing — some tests can be carried out with systems live; others require circuits to be isolated. Your contractor should plan this carefully to minimise disruption to your operations
- Reporting — you will receive a detailed report within an agreed timeframe, covering all findings, classifications, and prioritised recommendations
- Follow-up consultation — a good contractor will walk you through the findings, explain the implications, and help you plan and budget for any remedial work or improvements
Choosing the Right Contractor for Your Audit
Not all electrical contractors are equally qualified to deliver a comprehensive commercial audit. Look for a contractor who holds relevant accreditations — particularly EIC Approved Contractor status — and has demonstrable experience in auditing commercial and industrial premises.
The contractor should provide a clear scope of work, a realistic timeline, and a transparent pricing structure. They should also be able to provide consulting and advisory services to help you act on the audit findings, not just hand you a report and walk away.
How Oleco Can Help
Oleco provides comprehensive electrical auditing services for commercial and industrial clients across the UK. As an EIC Approved Contractor with over a decade of experience, we deliver audits that go beyond box-ticking — providing genuine insight into the condition, compliance, and efficiency of your electrical infrastructure.
Our audit process is thorough but practical. We understand that your premises need to keep operating, and we plan our work to minimise disruption. Every audit concludes with a clear, actionable report and a consultation to help you prioritise next steps.
If your electrical installations have not been audited recently, or if you are unsure whether your current documentation meets compliance requirements, we would welcome the opportunity to discuss your needs.