The Operation Only Discovers It Has Lost Energy Efficiency When the Bills Arrive
Energy bills arrive higher than the previous month, but no one can pinpoint exactly why. The operation appears unchanged. Demand has not changed significantly. The equipment is still running.
What happened may be more subtle: a heat exchanger gradually losing efficiency, a valve operating outside its optimal point, or a thermal plant consuming more energy to deliver the same result. None of these signs, individually, necessarily interrupts the operation. But over time, they can represent a silent deterioration in the energy performance of the assets.
This is a recurring challenge in operations that rely on critical thermal systems. Efficiency losses rarely happen all at once. They accumulate gradually until the impact shows up in energy consumption and, consequently, in operating costs.
At that point, a question that seems simple does not always have a precise technical answer:
Why are we consuming more energy to deliver the same result?
The Data Blind Spot Between One Energy Bill and the Next
The reason this question often goes unanswered is not a lack of attention from the maintenance team. It is structural. Most companies measure what comes in and monitor consolidated consumption. What is often missing is continuous visibility into how thermal assets are performing between one energy bill and the next.
Without this monitoring, operations only realize that something has changed when the accumulated effect has already become a cost. The variation appears on the bill, but its cause may be distributed across different pieces of equipment, operating conditions, and maintenance decisions.
This gap has a direct impact on asset management. Without continuous performance data, the maintenance team cannot determine whether it is simply preserving availability or also preserving system efficiency. The two may seem similar, but they are not. An asset can be available, operating, and have no recorded failures while still consuming significantly more energy to deliver the same result.
For this reason, availability cannot be the only criterion used to assess the condition of a thermal asset. Energy performance also needs to be part of the equation.
How Data Turns Reactive Maintenance into Predictive Maintenance
The way out of this cycle is not simply to increase inspection frequency. It is to change what is measured between inspections and, above all, to turn that data into criteria for deciding when to act.
This involves three steps:
1. Establish a Performance Reference
The first step is to build a defensible energy baseline: a reference for how much the system should consume under specific operating conditions, calibrated using data from the facility itself. With this reference, a change in consumption is no longer simply a variation on the energy bill. It becomes a measurable deviation from expected performance.
2. Connect Performance and Maintenance
Once this reference has been established, performance indicators can be cross-referenced with maintenance indicators to identify degradation trends before they become a significant cost or a failure. Asset criticality, recurring problems, adherence to preventive maintenance plans, and changes in energy performance can then answer the same question: Is the asset still delivering what it should, with the energy consumption it should have?
3. Integrate Performance, Maintenance, and Compliance
PMOC, maintenance contracts, and performance monitoring should no longer operate as parallel activities. Compliance defines requirements. Contracts structure execution. Performance data shows whether the asset continues to deliver the expected result. When these three dimensions feed into the same management logic, maintenance is no longer assessed only by whether planned activities were completed. It is also assessed by the performance that those activities help preserve.
The benefit goes beyond anticipating a failure. It creates an objective basis for deciding when to act, why to act, and where to allocate resources, before degradation appears only as an increase in operating costs.
From Measured Energy Efficiency to Technical Decision-Making
Identifying a performance loss is only the first step.
Once it becomes clear that an asset or system is delivering less than it should, a more difficult question emerges:
What should be done next?
A decline in performance can have different causes and, consequently, different responses. In some cases, an operational or control adjustment can restore efficiency without significant investment. In others, it may be necessary to replace a component, revise a strategy, or proceed with a retrofit.
Choosing between these alternatives involves more than potential savings. It is necessary to consider actual operating conditions, required investment, associated risks, asset lifetime, and the solution's ability to deliver the projected performance.
This is one of the central dilemmas in thermal asset management:
How do you turn an identified efficiency opportunity into a technical decision that is effective, economically viable, and verifiable?
Without a reliable performance reference and a technical assessment of the alternatives, decisions tend to be guided by estimates, supplier recommendations, or the path of least resistance.
As a result, the savings projected when the decision is made may not be the same savings delivered by the solution in operation. The gap between identifying an opportunity, selecting a solution, and verifying the result is where the quality of the technical decision becomes critical.
How DeHeat Supports Different Stages of the Decision-Making Process
Not every client arrives with the same problem, and not every operation requires the same type of intervention. DeHeat works according to the organization's level of maturity and the specific need presented in each situation.
When the challenge is structural, we work through Thermal Asset Governance.
The focus is on creating the structure that enables the company to make decisions over time: how to measure performance, which indicators to monitor, when to act, how to prioritize assets, how to incorporate efficiency and decarbonization criteria, and how to guide investments.
Governance primarily addresses the questions of “when” and “why” to act.
When there is a specific technical decision to be made, Integrated Thermal Asset Validation (VITA) comes into play.
The focus shifts to a specific asset, system, or project that needs to be analyzed and compared: a retrofit, a control change, the replacement of a component or piece of equipment, or an operational improvement.
The methodology uses baselines and thermo-energy simulations to determine what should be done, validate how it should be implemented, and verify the consistency of projected savings.
In many cases, the two approaches complement each other.
Governance identifies where an opportunity exists, establishes criteria for prioritizing it, and creates the process through which the decision can be made. VITA deepens the technical analysis, compares alternatives, simulates results, and helps ensure the quality of the solution through delivery.
The result is an approach that does not treat energy efficiency as an isolated initiative, but as a continuous management capability.
The next change in the energy bill no longer needs to be the moment when the company discovers that something has happened. Instead, it can become confirmation of a performance that the operation has already been monitoring, understanding, and, when necessary, correcting in advance.
About the Author
This content was developed by DeHeat and published internationally through JoinWise.
DeHeat specializes in energy diagnostics, central plant decarbonization, heating systems consulting, and energy efficiency solutions for commercial and industrial facilities.
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