Business energy efficiency: How to measure and improve performance
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Business energy efficiency is a measure of how effectively electricity and gas are used to carry out commercial operations. An energy-efficient business operates without any unnecessary consumption of energy, minimising its energy bills and carbon emissions. Business energy efficiency typically involves:
Replacing older, inefficient equipment with modern equivalents that use significantly less electricity. Common examples in older commercial properties include fluorescent light bulbs without occupancy sensors and outdated air-conditioning systems that rely on fixed settings.
Identifying and eliminating unnecessary energy use. This includes getting employees to turn off IT equipment that is not in use and sealing air leaks in your building so heating systems are not working harder than they need to.
Adapting processes to reduce business energy consumption. Using data from energy monitoring systems and smart meters to measure the energy consumption of specific operations and make adjustments to processes and procedures so they use less energy.
Below we have summarised the five key financial, regulatory and environmental reasons why energy efficiency is important for businesses.
Business energy tariffs include a unit cost per kWh of electricity or gas consumed. Improving business energy efficiency reduces energy consumption while achieving the same business outcomes, which translates into lower bills.
Large business energy customers are required by UK law to measure and disclose their energy consumption through Streamlined Energy and Carbon Reporting and to systematically identify ways to improve energy efficiency through the Energy Savings Opportunity Scheme.
The wholesale gas and wholesale electricity market in Britain are directly impacted by geopolitical events. Improving energy efficiency helps protect the profitability of organisations by reducing exposure to volatility in commercial gas and business electricity prices.
The national grid remains dependent on burning fossil fuels at gas power stations to generate electricity. Improving energy efficiency reduces direct carbon emissions from a gas supply and indirect carbon emissions associated with a business electricity connection.
Consumers are increasingly aware of the environmental impact of their purchases. Steps to improve business energy efficiency and reduce carbon emissions are a key component of corporate environmental strategies, contributing to a green reputation and consumer trust.
Understanding how your business uses energy is the first step towards making meaningful improvements. By tracking usage and setting clear benchmarks, you can measure progress, spot inefficiencies, and monitor the impact of changes over time.
This section explains the hardware, software, and calculations needed to effectively measure business energy efficiency.
Energy meters are devices that measure electricity and gas consumption over time. Modern smart business energy meters make and transmit regular automatic readings, which provide essential data to monitor efficiency.
Setting up metering devices to measure and monitor the efficiency of business processes typically involves mains meters measuring the electricity or gas consumption of entire properties and sub-meters measuring specific processes or functions.
The bills issued by your business energy suppliers provide a useful starting point for measuring the energy efficiency of your business.
Commercial gas and business electricity bills show monthly main meter readings for each mains connection used by your business, and the number of kWh consumed.
Understanding changes in consumption month by month can provide a high-level understanding of how business energy efficiency has changed over time.
Business energy monitoring software provides more sophisticated and powerful efficiency insights by automatically receiving meter readings from a range meters.
Monitoring software typically offers a suite of analytics, visualisations, and automatic alerts to help management understand and improve business energy efficiency.
Find out more in our guide to business energy monitoring.
Energy-intensity ratios measure how much energy a business uses to produce a unit of output. They are useful for understanding how business energy efficiency changes as a business grows or evolves.
The right energy-intensity ratios depend on your type of business, but common examples include:
Benchmarking measures business energy efficiency by comparing energy-intensity ratios against a reference point to identify gaps and opportunities for improvement.
Examples of useful business energy efficiency benchmarks include:
The formal process a business can use to identify ways to improve energy efficiency is called a business energy audit.
Check out our full guide to business energy audits, where we have provided a checklist to audit your own business and explained the best ways to find an audit professional.
Below, we have summarised the 12 most common business energy efficiency improvements identified in energy audits of British commercial properties:
Setting your boiler flow temperature to around 60°C helps it run more efficiently. Rooms may take slightly longer to heat, but overall gas use and business gas bills will be lower.
LED bulbs and tubes use up to 80% less energy than halogen or incandescent lighting and last much longer. Upgrading fittings quickly pays for itself through reduced electricity costs.
Motion sensors in low-traffic areas such as storerooms, bathrooms, and stairwells ensure lights are only on when needed, cutting unnecessary business electricity use.
Turning down your workplace thermostat by just one degree reduces heating demand without affecting comfort, as long as it stays within safe workplace temperature guidelines.
Draughts around doors, windows, and vents make heating systems work harder. Simple fixes like draught excluders or sealant can keep warm air in and costs down.
Ceiling or portable fans create a cooling breeze at a fraction of the cost of air conditioning, helping staff stay comfortable during hot weather.
Encouraging employees to switch off lights, unplug unused devices, and use equipment efficiently can make a measurable difference. Visual prompts or short training sessions work well.
Appliances such as dishwashers often include an eco mode that uses less energy and water. The cycle takes longer than a standard wash but usually delivers the same results, making it an easy way to cut consumption.
Making better use of natural light reduces reliance on artificial lighting. Skylights, large windows, reflective surfaces, and open layouts help bring sunlight into workspaces, cutting electricity use while creating a brighter, healthier environment for staff and customers.
Air-source heat pumps offer one of the most efficient ways to heat commercial buildings. When combined with good insulation and a green business energy tariff, they can significantly reduce heating costs and carbon emissions, while also removing the need for a business gas connection.
Poor insulation leads to energy loss and higher heating bills. Upgrades such as cavity wall insulation, roof insulation, and double glazing reduce wasted energy, lower business energy consumption, and improve a building’s Energy Performance Certificate (EPC) rating.
Outdated equipment often consumes far more energy than modern alternatives. Upgrading air-conditioning units, refrigeration, or other heavy-use machinery can cut electricity use by up to 30% while lowering ongoing maintenance costs.
Several of the business energy solutions proposed in this guide require a significant upfront investment.
Below is a summary of the financing support available to businesses for energy efficiency improvements: