Commercial Energy Efficiency Strategies: 12 Ways to Cut Business Energy Use in 2026 Quick Answer
Commercial energy efficiency means reducing the electricity or gas your business needs to deliver the same output, service or level of comfort.
For many businesses, the best place to start isn’t solar panels or an expensive building-management system.
Start by finding where energy is being wasted.
High-priority opportunities often include:
heating and cooling controls
heat loss
LED lighting and lighting controls
equipment left running unnecessarily
poorly maintained machinery
refrigeration
compressed air
inefficient motors and production equipment
poor visibility of when energy is being consumed
Our preferred approach:
Measure → identify waste → prioritise → implement → verify savings → repeat.
Reducing consumption and buying energy well are two separate opportunities.
Already reduced consumption? Compare business energy prices →
Key Takeaways
Start with consumption data rather than guessing where energy is being wasted.Low-cost measures such as heating controls, equipment shutdown procedures and lighting changes can be implemented before major capital projects.
Heating is a particularly important area to investigate in many non-domestic buildings.LED lighting , sensors and better use of natural light can reduce unnecessary lighting demand.Maintenance matters: poorly maintained heating, cooling, refrigeration and production equipment can waste energy.
Smart meters and monitoring systems are useful when the data leads to action; the meter itself doesn’t automatically reduce consumption.
Large organisations should check whether ESOS applies to them.
Energy efficiency reduces the amount of energy you buy ; energy procurement determines how you buy and pay for it .
Measure savings after making changes so you know which projects actually worked.
Contents How Do We Work?
Our comparisons are researched and reviewed by the Compare Your Business Costs editorial team using provider information, official UK guidance and business buying criteria. See how Compare Your Business Costs works.
Authored by: Ally Cox – Business Technology & B2B Services Specialist, 10+ years’ experience.
Last updated: September 2026
What Is Commercial Energy Efficiency? Commercial energy efficiency is about using less energy to achieve the same business outcome, so this could mean:
heating an office using less gas
lighting a warehouse using less electricity
keeping food refrigerated using less power
manufacturing the same number of products with lower energy consumption
preventing electricity being consumed when a building is empty
The objective isn’t simply to use less energy – it’s to identify energy consumption that isn’t contributing enough value to justify its cost.
Why Does Commercial Energy Efficiency Matter? Improving efficiency can help a business:
reduce energy consumption
reduce operating costs
reduce exposure to energy-price changes
reduce carbon emissions
identify equipment and maintenance problems
improve control over building performance
It can also support wider environmental or energy-management objectives.
Where Should Your Business Start? Don’t start with a shopping list of technology – s tart with your existing consumption.
Step 1: Establish Your Energy Baseline
Gather at least:
electricity consumption in kWh
gas consumption in kWh
monthly or half-hourly consumption where available
opening hours
building occupancy
major energy-consuming equipment
seasonal variations
Compare consumption over time, so look for:
unexpected spikes
high overnight usage
weekend consumption
seasonal anomalies
consumption when premises are closed
Our Commercial Energy Usage Analytics guide explains this in more detail.
Step 2: Walk the site
Data tells you when energy is being consumed.
A physical inspection can help explain why, so check:
heating and cooling settings
doors and windows
draughts
lighting
equipment left running
server and IT equipment
refrigeration
motors
compressed-air systems
timers and controls
Step 3: Separate Quick Wins From Capital Projects
Create three categories:
Category Examples
Low/no cost
Settings, schedules, shutdown procedures, maintenance, staff behaviour
Moderate investment
LEDs, lighting sensors, heating controls, draught proofing, monitoring
Capital project
Major HVAC replacement, insulation, building automation, process equipment, onsite generation
This prevents relatively easy savings being delayed while the business considers larger projects.
12 Commercial Energy Efficiency Strategies 1. Carry Out an Energy Audit An energy audit examines how a site, building or process consumes energy and identifies potential improvements and for a smaller business, this might begin with bills, meter data and a structured site walkaround.
A larger or more energy-intensive organisation may require a much more detailed technical assessment.
Look for:
where most energy is consumed
when consumption occurs
avoidable baseload
inefficient equipment
poor controls
maintenance problems
investment opportunities
2. Optimise Heating & Cooling Heating can account for a substantial proportion of energy use in non-domestic buildings, making it an obvious area to investigate, so check:
operating times
thermostat settings
weekend schedules
bank-holiday schedules
areas heated or cooled when unoccupied
simultaneous heating and cooling
boiler and HVAC maintenance
Energy Saving Trust currently recommends using heating controls effectively and adjusting settings around seasons, weekends and bank holidays.
Simple controls can be valuable if they stop heating or cooling running when nobody needs it.
3. Reduce Heat Loss Before buying a larger heating system, check whether the building is unnecessarily losing the heat it already produces, and possible measures include:
draught proofing
sealing unnecessary gaps
insulating pipes and hot-water systems
improving roof, wall or floor insulation where appropriate
keeping doors and windows closed when heating is operating
The appropriate investment will depend heavily on the building, ownership arrangements and expected occupancy period.
4. Upgrade Lighting & Controls Where inefficient lighting remains in use, LEDs can be a relatively straightforward efficiency improvement.
But don’t stop at the bulb – also investigate:
occupancy sensors
timers
zoned lighting
daylight sensors
natural light
lights left on outside operating hours
The cheapest unit of lighting electricity is the one you don’t need to use.
5. Stop Unnecessary Out-of-Hours Consumption Look at electricity use when the business is closed – if a site closes at 6pm but consumption barely falls until midnight, investigate why.
Common causes can include:
computers and monitors
printers
kitchen equipment
lighting
heating or air conditioning
machinery
ventilation
Some equipment must remain on – the objective is to distinguish necessary baseload from avoidable baseload.
6. Use Power-Saving Settings Configure office equipment so that energy-saving behaviour happens automatically.
Examples include:
monitor sleep settings
computer power management
automatic printer shutdown
timed equipment controls
Automated controls are generally more reliable than expecting every employee to remember every action every day.
7. Maintain Equipment Properly Energy efficiency isn’t only about replacing equipment – poorly maintained equipment can also consume energy unnecessarily.
Review maintenance schedules for:
boilers
air conditioning
ventilation
motors
pumps
compressors
production equipment
refrigeration
Maintenance may therefore deliver both energy and reliability benefits.
8. Improve Refrigeration Efficiency This can be particularly important for:
restaurants
hotels
food retailers
supermarkets
food production
cold storage
Check:
door seals
temperatures
ventilation around equipment
ice build-up
doors being left open
maintenance
Energy Saving Trust also recommends keeping refrigeration doors closed, maintaining seals, allowing air to circulate and defrosting freezers where necessary.
9. Check Motors, Pumps & Compressed Air For industrial and manufacturing businesses, process equipment may be much more important than office lighting.
Investigate:
motors running unnecessarily
oversized equipment
poorly controlled pumps and fans
compressed-air leaks
filters
equipment operating speeds
Prioritise the systems that consume the most energy, not simply the improvements that are easiest to see.
10. Use Smart Meter & Half-Hourly Data Better energy data can reveal patterns that a monthly bill hides and depending on your metering setup, you may be able to identify:
overnight consumption
weekend baseload
operational peaks
seasonal changes
changes following an efficiency project
A meter is a measurement tool.
The saving comes from identifying a problem and acting on the information.
See our Smart Meters for Business and Business Energy Monitoring guides.
11. Replace Inefficient Equipment at the Right Time Don’t automatically replace every piece of old equipment purely because a newer model uses less energy.
Compare:
purchase cost
expected energy saving
maintenance saving
remaining useful life
operational benefit
payback period
Replacement can make particularly strong commercial sense when existing equipment is energy intensive, unreliable or approaching the end of its useful life.
12. Consider Onsite Renewable Energy After Reducing Waste Solar PV and other onsite generation can reduce the amount of electricity purchased from the grid.
But generation and efficiency are not the same thing.
Efficiency: reduces how much energy the business needs.Onsite generation: changes where some of that energy comes from.
For many businesses, it makes sense to understand and reduce avoidable consumption before sizing a major generation project.
See our Renewable Business Energy Solutions guide.
How to Prioritise Commercial Energy Efficiency Projects A long list of recommendations isn’t an energy strategy, so prioritise projects using a consistent framework.
Question Why It Matters
How much energy does it save?
Establishes the potential consumption reduction
What does it cost?
Establishes the investment required
What is the payback?
Helps compare projects financially
How certain is the saving?
Separates measured opportunities from assumptions
Does it improve operations?
Some projects also improve reliability, comfort or output
How disruptive is implementation?
Important for operational sites
How long will we occupy the building?
Important for major building investment
Our Preferred Order
Waste first → controls second → maintenance → targeted upgrades → major capital projects → generation.
That isn’t a rigid rule.
A failing boiler or major equipment replacement may obviously move straight to the front.
But it prevents businesses spending heavily while basic waste remains unresolved.
How to Calculate Potential Energy Savings Don’t rely on generic percentages when evaluating a project.
Use your own consumption.
Simple Consumption-Saving Calculation
If a measure is expected to reduce electricity consumption by 10,000 kWh per year: Annual consumption saving = 10,000 kWh
If the relevant electricity cost is 25p/kWh: 10,000 × £0.25 = £2,500 estimated annual energy saving
If the project costs £5,000: Simple payback = £5,000 ÷ £2,500 = 2 years
This is an illustrative example only.
Don’t Forget Other Financial Effects
A project could also affect:
maintenance
equipment replacement
downtime
staff comfort
production output
demand or capacity-related charges
For larger projects, a simple payback calculation may not be enough.
Smart Meters, Monitoring & Energy Data Energy monitoring helps turn efficiency from a one-off project into an ongoing process.
A useful monitoring system should help answer:
How much energy are we using?
When are we using it?
What is our baseload?
Are sites behaving differently?
Did the efficiency project actually reduce consumption?
Has consumption started creeping upwards again?
Measure Before and After
Where possible, establish a baseline before implementing a measure.
Then compare subsequent consumption while accounting for relevant changes such as:
weather
occupancy
opening hours
production volumes
site changes
Otherwise, a lower bill could simply reflect a lower energy price rather than improved efficiency.
Measure efficiency in kWh first, not pounds alone.
How to Engage Employees in Energy Efficiency Staff behaviour can support an efficiency programme, particularly where employees directly control equipment, lighting, heating or operational processes.
Useful approaches include:
clear shutdown procedures
simple staff training
energy-saving reminders
named energy or sustainability champions
sharing consumption data with teams
giving employees a way to report waste or equipment problems
Don’t Rely on Posters Alone
Behavioural measures work better when the desired action is easy.
For example:
Weaker control: ask everyone to remember to switch off a printer.Stronger control: configure the printer to power down automatically.
Use staff engagement alongside automation, maintenance and technical controls rather than treating behaviour as the entire energy strategy.
ESOS & Commercial Energy Efficiency in 2026 The Energy Savings Opportunity Scheme (ESOS) is a mandatory energy assessment scheme for UK organisations that meet its qualification criteria.
It primarily applies to large undertakings and qualifying corporate groups rather than every UK business.
ESOS assessments cover energy used by:
buildings
industrial processes
transport
Their purpose includes identifying tailored, cost-effective energy-saving opportunities.
ESOS Phase 4
Phase 4 is now the relevant forward-looking compliance period.
The qualification date is:31 December 2026
and the Phase 4 notification of compliance deadline is 5 December 2027.
Organisations potentially within scope should use the current government guidance to establish their obligations rather than assuming an energy-efficiency project itself satisfies ESOS.
Check the current government ESOS guidance →
What About ESOS Phase 3 ?
Phase 3 hasn’t disappeared completely and for affected organisations, the remaining Phase 3 second progress update deadline is 5 December 2026 .
This page provides general energy-efficiency information rather than compliance advice.
Energy Efficiency vs Energy Procurement These are two different ways to tackle energy costs.
Energy Efficiency Energy Procurement
Reduces consumption
Manages how energy is purchased
Focuses on kWh used
Focuses on price, contract and risk
Includes controls, equipment and behaviour
Includes quotations, contract structures and suppliers
Can produce ongoing consumption savings
Can improve commercial buying outcomes
A well-managed business should consider both.
Reducing consumption while remaining on an unnecessarily expensive energy arrangement leaves money on the table.
Negotiating a competitive tariff while wasting large amounts of energy does the same.
See our Business Energy Tariff Optimisation and Business Energy Procurement Services guides.
Our View: Don’t Start With the Most Impressive Technology Commercial energy efficiency can become unnecessarily complicated, and businesses hear about:
AI energy management
building automation
smart meters
solar panels
heat pumps
battery storage
All can have legitimate uses.
But none answers the first question:
Where is your business currently wasting energy?
We would start with the data, identify the biggest avoidable loads and rank opportunities by their likely financial and operational value.
Our Energy Efficiency Order 1. Measure consumption
↓
2. Find avoidable waste
↓
3. Fix controls and maintenance
↓
4. Implement low-cost improvements
↓
5. Evaluate equipment and building upgrades
↓
6. Consider larger capital and generation projects
↓
7. Measure the result
Then repeat the process.
Energy efficiency should be measurable, not just sustainable-sounding.
Commercial Energy Efficiency FAQs What is commercial energy efficiency?
Commercial energy efficiency means reducing the amount of energy required to deliver the same or an improved business outcome. Examples include better heating controls, efficient lighting, equipment maintenance and reducing unnecessary out-of-hours consumption.
How can a business improve energy efficiency?
Start by measuring electricity and gas consumption and identifying where energy is being wasted. Common opportunities include heating and cooling, lighting, heat loss, office equipment, refrigeration, motors, production machinery and out-of-hours consumption.
What is the cheapest way to improve business energy efficiency?
Some of the lowest-cost measures involve changing operating schedules, adjusting controls, using power-saving settings, improving shutdown procedures and fixing maintenance issues. The best opportunity depends on how your particular business consumes energy.
How much can a business save through energy efficiency?
There is no reliable single percentage for every business. Savings depend on the building, equipment, current efficiency, operating hours and measures implemented. Energy Saving Trust cites historical research suggesting SMEs could reduce energy bills substantially through efficiency measures and behavioural change, but individual businesses should calculate opportunities using their own consumption data.
What uses the most energy in a commercial building?
It depends on the building and activity. Heating can be a major energy load in many workplaces, while refrigeration, cooling, machinery, compressed air or production processes can dominate in other sectors.
Do smart meters reduce business energy use?
Not automatically. Smart meters provide better consumption information. Savings arise when a business uses that information to identify waste and change how energy is consumed.
Should I replace all lighting with LEDs?
LED lighting can reduce electricity demand where less-efficient lighting remains in use. Consider controls, occupancy sensors and whether lighting is being used unnecessarily at the same time.
What is an energy audit?
An energy audit examines energy consumption and identifies opportunities to reduce it. The level of detail can range from a basic site assessment to a detailed technical audit of buildings, processes and equipment.
Does ESOS apply to every business?
No. ESOS applies to organisations that meet its qualification criteria, principally large UK undertakings and qualifying corporate groups. Check current government guidance if your organisation may be in scope.
What is the difference between energy efficiency and renewable energy?
Energy efficiency reduces the energy required. Renewable energy changes the source of some or all of the energy consumed. Businesses can use both approaches together.
Should I improve efficiency or switch energy supplier first?
They don’t need to be sequential. Energy efficiency can reduce the number of kWh you consume, while switching or procurement can affect what you pay for the energy you still need. Review both where appropriate.
Reduce Consumption – Then Make Sure You’re Buying Energy Well Energy efficiency addresses one side of your bill:
how much energy you use.
Your contract addresses the other:
what you pay for the energy you buy.
If your business is approaching the end of its current contract, on out-of-contract rates or simply wants to understand its options, compare available business energy quotations.
Compare tailored business energy quotes →
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Energy Efficiency & Monitoring Prices & Cost Management Contracts & Market Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
