When organisations look to reduce energy consumption and carbon emissions, one of the first questions they ask is:
Which energy-saving measure delivers the best return on investment?
While the answer varies between sites and sectors, one intervention consistently delivers some of the highest energy savings for the lowest capital investment: optimising building controls and energy management systems.
Compared to major infrastructure projects, control optimisation often requires relatively little investment while unlocking significant and immediate energy savings.
Why Building Controls Matter
Many commercial and industrial buildings already have heating, ventilation, air conditioning (HVAC), lighting and energy management systems in place. However, these systems are often operating inefficiently due to poor configuration, outdated schedules or changes in building use over time.
It’s common to find:
- Heating and cooling running outside occupied hours
- Lighting schedules that no longer reflect operational requirements
- Equipment operating at unnecessary capacity
- Conflicting control settings that waste energy
These issues can increase energy consumption significantly without being noticed.
By reviewing and optimising existing controls, organisations can often achieve substantial savings without replacing equipment.
High Savings, Low Investment
Unlike major capital projects such as plant replacement, renewable energy installations or building fabric upgrades, controls optimisation typically focuses on making better use of existing assets.
This means organisations can benefit from:
- Low implementation costs
- Minimal operational disruption
- Rapid deployment
- Immediate energy reductions
- Short payback periods
In many cases, simple control adjustments can reduce energy consumption by 10–20% or more, depending on the site’s starting point.
Common Optimisation Opportunities
Across energy audits and optimisation projects, some of the most common opportunities include:
HVAC Scheduling
Heating and cooling systems are frequently found running longer than necessary. Aligning operating schedules with actual occupancy can deliver significant reductions in energy use.
Temperature Set Point Reviews
Small adjustments to heating and cooling set points can generate noticeable savings without affecting occupant comfort.
Lighting Control Improvements
Updating timers, occupancy sensors and daylight controls helps ensure lighting is only used when required.
Plant Sequencing
Ensuring boilers, chillers and other equipment operate in the most efficient sequence reduces unnecessary energy consumption.
Out-of-Hours Energy Reduction
Monitoring overnight and weekend energy consumption often identifies equipment running unnecessarily when buildings are unoccupied.
Why Energy Data Is Critical
The most successful energy-saving projects begin with accurate data.
Without visibility of how, when and where energy is being consumed, organisations can struggle to identify the highest-impact opportunities.
This is why energy monitoring, metering and auditing play such an important role in energy management.
By analysing energy consumption patterns, businesses can:
- Identify avoidable energy waste
- Prioritise improvement opportunities
- Measure savings achieved
- Support ongoing optimisation
Data-led decision-making ensures investment is directed towards measures that deliver the greatest return.
Beyond Energy Savings
The benefits of controls optimisation extend beyond reducing utility costs.
Organisations also benefit from:
- Lower carbon emissions
- Improved ESG performance
- Greater compliance with energy management standards
- Enhanced building comfort and operational performance
- Stronger foundations for Net Zero strategies
Because these improvements often use existing infrastructure, they can provide one of the quickest and most cost-effective routes to measurable carbon reduction.
A Practical Starting Point for Energy Reduction
While technologies such as solar PV, battery storage and equipment upgrades all have an important role to play, many organisations overlook the opportunities already sitting within their buildings.
Before investing heavily in new infrastructure, reviewing and optimising existing controls can often deliver the strongest investment-to-energy-saving ratio.
For organisations looking to reduce energy costs, improve efficiency and accelerate carbon reduction, control optimisation remains one of the most effective first steps.
At TEST, we help organisations identify, prioritise and implement energy-saving opportunities through detailed energy audits, monitoring, metering and ISO 50001-aligned energy management strategies.
By turning energy data into actionable insight, we help businesses achieve measurable results and long-term performance improvements.
Find out more about how TEST can help:
Tel: 0113 467 7650
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