What is a Business Energy Audit and How Do You Do One?
A business energy audit gives you a clear, strategic picture of your organisation’s energy waste. It shows how much power you use, when you use it and where inefficiencies sit across your sites. This process helps you identify energy-saving opportunities that improve day-to-day efficiency and reduce unnecessary costs. With a better understanding of your usage patterns, we guide you towards informed decisions that lower spend and support your carbon goals.
Business Utility Hub explains how to perform a business energy audit, the benefits of completing an audit and the typical costs involved when reviewing a business’s energy consumption.
The different types of business energy audits
Before choosing an audit approach, it helps to understand the different ways a business energy audit can be carried out. Each option offers a different level of detail, time commitment and insight, depending on the size of your site, how energy is used and what you want to achieve. Below, we outline the main types of business energy audits and where each one tends to work best.
Phone-based audits
Phone-based audits offer a more streamlined option for businesses that want an initial assessment without a site visit. We review your recent bills, meter details, tariffs and operating profile over the phone, supported by usage data where available. This type of audit helps highlight patterns, anomalies and potential areas of overspend, particularly around contract terms and tariff structure. It suits smaller sites or businesses looking for a fast, low-disruption way to understand their current position before deciding on next steps.
Internal audits
Internal audits are carried out by your own team using internal data, meter readings and operational knowledge. They can be useful for tracking ongoing performance or reviewing specific areas, such as out-of-hours usage or changes following equipment upgrades. While internal audits benefit from familiarity with the business, they often work best when paired with external insight, bringing market context, tariff comparison and an independent view of supplier pricing. This combination helps turn internal findings into practical cost-saving actions.
How to conduct a business energy audit
Performing a business energy audit helps you get an accurate picture of your energy usage and can be done in the following stages:
1. Assess your current energy use
The first step in the auditing process is to gather data to establish a baseline. Collect at least 12 months of your recent energy bills (electricity and gas) to understand historical consumption patterns and costs. Analyse the data to identify peak consumption periods and look for anomalies like sudden spikes in demand or unusually high night-time usage. This helps focus the audit on the areas that use the most energy.
2. Conduct a site walk-through
Next, perform a physical inspection of your business premises. Systematically walk through each area, inside and out, to see how and where energy is being used and wasted. It’s helpful to do this at different times of the day to capture different usage patterns. Use a business energy audit checklist to note the condition and functionality of everything related to your energy use, including:
- Building structure, insulation, windows and doors
- Lighting systems
- Heating, ventilation and air conditioning (HVAC) systems
- Energy-consuming equipment and machinery
3 . Analyse the data and identify opportunities
With the data collected, you can begin to identify specific energy-saving opportunities. For each opportunity, calculate the potential savings by estimating the energy reduction, costs and carbon factors. You can engage with equipment suppliers for quotes on recommended work. Compare the potential savings with the estimated costs to determine the payback time for each project. This helps you prioritise actions, starting with "quick wins" - simple, inexpensive changes that offer immediate benefits.
4. Develop an action plan
Create a prioritised list of your energy saving opportunities - a clear action plan will categorise recommendations based on potential savings, cost and feasibility (e.g., quick wins, medium-term fixes, long-term investments). For each item, include a project description, estimated savings, expected costs, and any available grants or incentives.
Business energy audit checklist
A systematic energy audit checklist helps structure your walk-through and keeps the assessment focused on the areas that have the greatest impact on your energy use. It provides a clear path to follow, making it easier to capture the information you need, compare findings across sites and build a realistic picture of where improvements may sit. Use the checklist below to guide your review and support consistent, accurate decision-making as you assess your business’s energy performance.
Lighting systems
- Are you using energy-efficient LED bulbs instead of older incandescent or fluorescent ones?
- Are lights switched off in unoccupied areas?
- Could you install motion sensors or timers in low-use areas like stockrooms or toilets?
- Are you making the most of natural daylight?
Heating, ventilation, and air conditioning (HVAC)
- Is your HVAC system serviced regularly?
- Are thermostat settings appropriate for working hours and seasons?
- Is pipework properly insulated?
- Are filters clean and are vents unobstructed?
- Are doors and windows kept closed when heating or air conditioning is on?
Building fabric
- Is the roof and wall insulation adequate?
- Are there draughts around windows and doors?
- Do you have double-glazing installed?
Equipment and appliances
- Is all equipment switched off completely when not in use, not left on standby?
- Are you using energy-efficient models for computers, printers, and other appliances?
- Are refrigeration coils cleaned regularly?
Staff engagement
- Are staff encouraged to save energy?
- Is there a "switch off" policy in place?
- Is energy efficiency part of staff training?
How much does an energy audit cost?
Our business energy audits are provided free of charge. We understand that every organisation is different, with varying energy usage, site numbers and operational complexity. That’s why our audits are tailored to reflect the scale of your business and focus on identifying meaningful, practical opportunities to reduce energy consumption and costs - without any upfront expense.
Whether you’re a small business looking for quick, easy efficiency wins or a larger organisation with multiple sites and more complex energy needs, our free audit delivers clear insights into how your energy is being used and where savings can be made. There’s no cost, no obligation, and no impact on your day-to-day operations - just expert analysis and actionable recommendations to help you improve efficiency and reduce spend.
What are the benefits of a business energy audit?
Conducting regular energy audits helps businesses identify inefficiencies, benchmark consumption, and prioritise improvements. The benefits go far beyond simply reducing your energy bills.
- Lower energy costs: by identifying and fixing inefficiencies, an energy audit can significantly reduce your utility bills, which can lead to significant savings, in many cases between 10% and 40%.
- Improve efficiency: audits pinpoint where your energy performance needs improving, leading to better maintenance schedules, smarter controls, and technology upgrades. This helps streamline processes and can even boost productivity.
- Identify equipment issues: our auditors can detect problems like leaks in compressed air systems or faulty HVAC systems, addressing them before they lead to costly repairs or operational downtime.
- Reduce your carbon footprint: by decreasing your energy consumption, your business can lower its environmental impact and improve its public image, aligning with the values of customers, employees, and investors.
- Extend equipment lifespan: implementing energy-saving measures reduces wear and tear on your equipment, leading to a longer operational life and lower replacement costs.
- Comply with regulations: many regions have energy efficiency regulations for commercial buildings. An audit ensures you meet these legal requirements and avoid potential penalties.
- Improve comfort and morale: recommendations such as improved insulation or HVAC upgrades create a more comfortable and productive work environment for your team.
Energy saving opportunities for UK businesses
Many UK organisations can cut energy costs by 20–30% through straightforward operational changes and smarter use of equipment. An audit highlights where these savings sit, but the next step is turning insight into action. Alongside identifying energy saving opportunities, we guide you through the schemes and grants that can support your projects and make investment more manageable.
Several government-backed options are available:
- Boiler Upgrade Scheme (BUS): offers grants of up to £7,500 to help businesses move to low-carbon heating systems such as heat pumps.
- Enhanced Capital Allowances (ECAs): allows eligible companies to deduct the full cost of qualifying energy-efficient equipment from taxable profits, improving cash flow on investment.
- Workplace Charging Scheme (WCS): offers vouchers that contribute towards the purchase and installation of electric vehicle charging points, covering up to 75% of the cost.
These schemes can make energy efficiency improvements far more accessible. We help you understand which options apply to your business and how each one could support your long-term energy strategy.
How Business Utility Hub can help
A detailed energy audit is a useful starting point for understanding how your organisation uses energy and where improvements could be made. When you want to identify savings, improve efficiency and gain clearer control over your utility costs, our team is here to support you.
At Business Utility Hub, we provide the insight and guidance businesses need to make informed energy decisions about their gas and electricity use. Our account managers review your usage patterns, explain any jargon in plain language and highlight contract details that may affect what you pay over time. Daily price checking means we can identify competitive rates quickly, helping you secure tariffs that reflect how your sites operate.
When you speak to us, you deal with customer representatives focused on what reduces your energy spend. We keep conversations practical and relevant to your needs. With our efficient two-minute average call handling time, most queries are resolved quickly - giving you the clarity you need to act before prices shift.
If switching is the best route toward lower costs, we manage the full process on your behalf. This includes coordinating with suppliers, handling the paperwork and keeping everything aligned so you move onto new rates smoothly. Our approach helps you avoid delays, billing overlaps or being placed on a default tariff.
If you’d like support with your energy strategy, contact our team on 0800 781 2700 or email savings@businessutilityhub.co.uk. We’re here to help you strengthen your cost control and make business energy consumption simpler to manage.
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