What Is an Energy Audit Report? Sections and Preparation Process
Argus EMS · 14.09.2026 · 6 min read
An energy audit report is a technical document that records where, when and how efficiently a facility uses energy, quantifies losses, and ranks improvement measures by cost and benefit. A well-prepared report answers the question “where should we start?” with evidence rather than intuition, and it becomes the basis for investment decisions. This article covers the sections of the report, the steps of the audit process, and the input that most strongly determines report quality: metering data.
Why Energy Audits Are Carried Out: The Legal Framework
In Türkiye, the main legal basis for energy audits is the Energy Efficiency Law No. 5627 and the Regulation on Increasing Efficiency in the Use of Energy Resources and Energy issued under it. The legislation sets obligations such as appointing an energy manager, reporting energy consumption and carrying out audits for industrial enterprises, buildings and public facilities whose annual energy consumption exceeds certain thresholds. Because thresholds, audit intervals and reporting calendars can be revised over time, you should confirm whether your facility is in scope using the current text of the regulation and announcements from the Ministry of Energy and Natural Resources.
Audits are carried out by energy efficiency consultancy companies authorized by the Ministry (known as EVD companies) or, where the legislation allows, by certified energy managers. Facilities without a legal obligation also benefit: an audit clarifies investment priorities, can provide a technical basis for applications to efficiency support programs, and delivers ready input for the energy review required under ISO 50001.
The Audit Process Step by Step
- Scope and boundary: The team agrees whether the audit covers the entire site or a specific process, and which energy types (electricity, natural gas, water, steam) will be examined.
- Preliminary data collection: Invoices and metering records covering at least one full seasonal cycle, production or occupancy data, the equipment inventory and operating hours are requested.
- Site survey and measurements: Significant energy users are measured on site with portable power analyzers, thermal cameras, flue gas analyzers, ultrasonic flow meters and lux meters.
- Analysis: An energy balance is built, showing how consumption is distributed across systems and where losses occur.
- Developing measures: For each loss, the technical solution, the investment need and the expected saving are determined.
- Reporting and presentation: Findings are presented to management and the measures to implement are prioritized.
- Implementation and verification: Once measures are in place, the achieved saving is measured and verified using a method defined in advance.
Sections of an Energy Audit Report
The format can vary with the organization preparing the report and the purpose of the audit, but a good report usually contains the following sections.
| Section | Content | Underlying data |
|---|---|---|
| Executive summary | Key findings, recommended measures and priority order | Synthesis of all sections |
| Facility description | Activity, floor area, operating schedule, main equipment | Inventory, design and operating information |
| Energy consumption profile | Consumption and cost by energy type, seasonal and hourly patterns | Invoices, meter and monitoring records |
| Energy balance and loss analysis | Share of each system, identified losses | Site measurements, sub-meter data |
| List of measures | Technical description, feasibility and risks of each measure | Analysis results, manufacturer data |
| Cost/benefit analysis | Investment, expected annual saving, payback and present value calculations | Unit prices, tariffs, supplier quotes |
| Implementation and verification plan | Schedule, responsibilities, how savings will be measured | Metering points, baseline period definition |
Consumption Profile and Loss Analysis: The Core of the Report
Monthly invoices show total consumption but not how it builds up. Base load that continues outside working hours, consumption piling into the peak tariff band, costs driven by reactive energy, or systems left running over the weekend only become visible with hourly or more frequent measurement. A portable measurement campaign lasting a few days or weeks captures only the conditions of that window; the heating season, the summer cooling load or production swings may not fit into it.
Loss analysis typically examines compressed air leaks, uninsulated pipes and valves, flue gas losses in boilers, motors and pumps running idle, inefficient lighting, low power factor and additional losses caused by harmonics. Each finding should be documented together with its measurement method and assumptions so that the measure can be verified later.
Cost/Benefit Analysis and Prioritizing Measures
Measures usually fall into two groups: low-cost operational measures such as correcting setpoints, adjusting operating hours or fixing leaks, and capital measures such as equipment replacement, variable frequency drives or heat recovery. The most common indicators used to compare them are:
- Simple payback period:
Investment cost ÷ Annual net saving - Net present value: the expected cash flows over the life of the measure, discounted to today, minus the investment
- Cost of saved energy:
Annualized investment ÷ Annual energy saving (kWh)
Expected savings are often engineering estimates. The report should therefore state clearly which baseline consumption, which unit price and which operating assumptions were used. A saving figure without visible assumptions can be neither verified nor challenged after implementation.
Before and After the Audit: The Role of Continuous Metering
Argus EMS does not prepare an official energy audit report; the audit remains the job of authorized EVD companies and certified energy managers. The role of Argus EMS is to provide reliable metering data before and after that work. The platform brings together electricity consumption from transformers, main meters and sub-meters, water consumption and, at sites with AVE access, natural gas data retrieved from the İGDAŞ AVE portal. Data is kept as hourly summaries and daily records, and raw readings are retained for 13 months, so the audit team can see seasonal patterns instead of being limited to a single measurement week. The day, peak and night time-of-use breakdown and reactive energy tracking for electricity feed directly into the consumption profile section. During connection outages the on-site data collector buffers readings for 30 days and does not delete them before the server acknowledges receipt, which limits the risk of gaps in the baseline period.
After measures are implemented, the same metering points continue to be monitored. The ISO 50001 module in Argus EMS builds a regression reference that links monthly electricity consumption to degree days and variables such as production or occupancy, so deviations of actual consumption from that reference can be tracked. A monthly board report is sent to management by email as a PDF. The formal saving calculation is still performed by the energy manager using the method defined in the audit report or in the measurement and verification plan.
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