How to Know If Your Company Needs an Energy Audit? 7 Signs You Shouldn't Ignore
Many companies notice that their electricity or heating bills are rising year after year, but often don't know where the problem originates. Without a detailed analysis, it is difficult to determine whether the cause is outdated equipment, inefficient systems, or the way energy is used in the facility. This is precisely why an energy audit is the first step toward reducing costs and managing consumption more efficiently.
In daily operations, managers focus on productivity, delivery deadlines, and product quality, while electricity, gas, or heating bills are often viewed as a fixed, unavoidable cost. However, practice shows that in most facilities—from office buildings to large manufacturing plants—there is significant potential for optimization. When energy is wasted, your company is actually losing money that could be invested in development, new technologies, or increasing employee wages.
Identifying hidden losses is not simple without professional equipment and methodology. Many energy-inefficient processes take place in parts of the system that are not visible to the naked eye, such as the inside of boiler rooms, compressor stations, or through thermal bridges on the facade.
Below, we highlight the most common signs indicating it is time to consider an energy audit.
7 Signs That Your Facility is Consuming More Energy Than It Should
1. Energy bills are rising without a clear reason
An increase in energy prices on the global or national market is a common occurrence, but it is not the only reason why your costs are rising. Often, the quantity of kilowatt-hours (kWh) consumed also increases, without anyone in the company noticing immediately. Valve malfunctions, compressed air leaks, or inefficient HVAC system operations can go unnoticed for months, constantly driving up consumption.
Example: If production and workload remain the same, but total energy consumption grows year after year, this is a clear signal that there are losses in the system that need to be precisely located and eliminated.
2. You do not know which systems consume the most energy
If you receive a lump-sum bill at the end of the month but cannot say with certainty what percentage of that energy goes to lighting, how much to HVAC systems (heating, ventilation, and air conditioning), and how much to compressors, pumps, motors, or the production lines themselves—your company is operating in the dark. Without adequate measurements, every saving decision is reduced to guesswork that often fails to yield results.
3. You are using older equipment
Older equipment does not necessarily mean it is unusable or broken. However, motors, boilers, cooling systems, and compressors older than 10 or 15 years were designed at a time when efficiency standards were significantly lower and energy was much cheaper. Modern equipment consumes considerably less energy for the same performance. An energy audit uses calculations to show exactly whether replacing older equipment is cost-effective and how quickly the investment will pay for itself through savings.
4. You are planning a renovation or investment
Before you invest tens or hundreds of thousands of euros in a new facade, window replacement, or a new heating system, you must know exactly what is causing the greatest losses in your facility. Otherwise, you risk overdimensioning the equipment or investing in something that yields a minimal return on investment. An energy audit provides the data needed to direct investments where they will have the greatest financial impact.
5. You lack precise consumption data
Most companies only have monthly bills that they forward to accounting. However, these bills do not show consumption dynamics: how much is consumed by production, how much by offices, and how much by heating and cooling systems during different times of the day or seasons. The lack of precise, time-distributed consumption data makes it very difficult to make any strategic and operational decisions in business.
6. There are legal or compliance obligations
In the Republic of Serbia and the European Union, large companies and enterprises with high energy consumption have a legal obligation to conduct energy audits or implement energy management systems. Furthermore, companies that want to optimize their business and gain internationally recognized competitiveness often implement the ISO 50001 standard, which requires systematic monitoring and continuous improvement of energy performance.
7. You want to reduce costs without reducing production
This is the key goal of modern energy efficiency. The purpose of an energy audit is not to have employees work in cold offices or for production lines to be shut down to save electricity. On the contrary, the goal is for systems to work smarter and more efficiently, delivering the same or better results with less energy consumption.
Symptoms and Solutions: How an Energy Audit Helps
The following table illustrates the most common energy problems in facilities and how an energy audit solves them:
| Facility Symptom | Possible Hidden Cause | How an Energy Audit Helps |
|---|---|---|
| Constantly high heating bills | Poor insulation, thermal bridges, or an unbalanced heating system | Thermographic imaging locates exact heat loss points and proposes optimal remediation measures |
| Frequent failures of electric motors and pumps | Equipment operating outside the optimal duty point or poor power quality | Power parameter measurements determine the operating mode and suggest installing variable frequency drives (VFDs) |
| High electricity bills on weekends and nights | Systems (e.g. ventilation, cooling) remain on even when the facility is not operating | Load profile analysis detects unnecessary operations and defines shutdown and optimization protocols |
| Employees complain of drafts and cold air | Uncontrolled air infiltration through joints and window frames | Blower Door test measures air tightness and detects places where air flows uncontrollably |
What Does an Energy Audit Look Like?
The energy audit process is conducted systematically to gather all relevant data and compile the most accurate analyses. It does not require any downtime in your operations or interruptions to production.
We analyze historical energy consumption and cost data from the last 36 months.
Our engineers conduct a detailed technical inspection of building characteristics and all energy systems on site.
We use professional equipment: thermal cameras, power analyzers, and flow and temperature meters.
We model the facility, calculate energy performance, and identify the areas of greatest loss.
We hand over an report detailing proposed measures, estimated investments, and payback period calculations.
A detailed description of the process and methodology itself can be viewed on our Energy Audits page.
What Does a Company Gain from an Energy Audit?
Instead of dry technical definitions and thick reports that gather dust in a drawer, we focus on real business benefits that your company can apply immediately:
- A clear picture of consumption: An exact understanding of where every dollar spent on energy goes.
- Identified key losses: Precisely located areas and processes where energy is needlessly wasted.
- Prioritized measures: A ranked list of actions you can take—ranging from low-cost/no-cost measures to larger investment projects.
- Investment & payback period (ROI) estimations: Accurate economic calculations showing you how many months or years it will take to recover the invested funds through reduced bills.
- A foundation for decision-making: Reliable data that makes it easier for management to decide on future infrastructure investments.
FAQ: Frequently Asked Questions about Energy Audits
Is an energy audit mandatory?
Yes, under the Law on Efficient Use of Energy in Serbia, large enterprises and members of the energy management system have a legal obligation to conduct energy audits every 5 years. For small and medium-sized enterprises, the audit is voluntary but highly recommended to reduce operating costs.
How long does an energy audit take?
The duration depends on the size and complexity of the facility. For office buildings and smaller plants, on-site work takes 1–2 days, while compiling the final report takes 2–4 weeks. For complex industrial plants, the process may take longer.
Does an energy audit disrupt production?
No. All measurements and walkthroughs are conducted during the regular operation of the facility, as we need to see how systems function in full operational mode to perform a realistic analysis.
How much does an energy audit cost?
The price is calculated individually and depends on the square footage, type of facility, types of energy systems, and the scope of on-site measurements. To get an accurate quote tailored to your needs, feel free to reach out via our contact form.
Who can perform an energy audit?
Energy audits can only be performed by licensed companies employing certified engineers authorized by the Ministry of Mining and Energy (energy efficiency engineers). Eneplus holds all necessary licenses and has an expert team to conduct audits.
How often is an energy audit conducted?
Entities legally required to do so in Serbia must conduct an audit every 5 years. However, it is recommended to perform a review sooner if a major renovation of the facility is planned or if new machinery is being installed in production.
Is an energy audit the same as an energy passport?
No. An Energy Passport is an official certificate showing the energy properties of a building (mostly required for obtaining a usage permit, selling, or leasing). An energy audit is a much deeper techno-economic analysis of the operation of all systems aimed at finding specific savings and optimizing processes.
Does an energy audit pay off for small companies?
Yes. Often, simple measures (so-called "low-cost/no-cost" measures, such as optimizing heating schedules and replacing lighting) result in savings that fully cover the costs of the audit itself within the first year of implementation.
Conclusion
If you have recognized one or more signs from this guide, the next step is to determine where the greatest energy losses occur. A well-executed energy audit provides concrete data and recommendations based on which you can make decisions regarding consumption optimization and future investments.
Learn more about our Energy Audits service and the process Eneplus applies to help you achieve maximum savings and improve the sustainability of your business.