Electricity and natural gas invoices arrive every month and accounting pays them. But does the yearly total cross a legal threshold, and is anyone checking? Many manufacturers ask that question for the first time when a letter or an inspection arrives.
The basis is Türkiye’s Energy Efficiency Law No. 5627, which places concrete energy management duties on industrial plants above a certain size. This article explains the threshold, who it covers and how to set up the data side. It is for information only; check the Ministry of Energy and Natural Resources for the rules that apply to your plant today.
What is a toe, and how many kWh is 1,000 toe?
Toe stands for “tonne of oil equivalent” (TEP in Turkish). It puts electricity, natural gas, coal and fuel oil into one unit. Under the Law, an “industrial enterprise” is a manufacturer registered with a chamber of commerce and industry (or of industry) whose total annual energy consumption is 1,000 toe or more, excluding licensed electricity generators.
By the internationally accepted conversion, 1 toe is about 11.63 MWh, so 1,000 toe is roughly 11,630 MWh a year. For a plant that uses only electricity, that is around 11.6 million kWh annually. Gas and other fuels count toward the total, so you need every energy type in one table rather than a pile of separate invoices.
What changes once you cross the line?
According to Article 7 of the Law:
- Industrial enterprises appoint an energy manager from among their own employees.
- In organised industrial zones, an energy management unit is set up to serve plants in the zone that consume less than 1,000 toe.
- Where annual consumption is 50,000 toe or more, an energy management unit is set up under the energy manager. A plant that already has a quality management unit can designate it for this role.
- Industrial enterprises submit energy consumption information to the General Directorate by the end of March every year, in the format the Directorate sets, and allow on-site inspection.
The Law also lets the Ministry lower these numerical limits by up to half or raise them up to double. So 1,000 toe looks fixed, but the current value should be confirmed from Ministry regulations.
Should plants under the threshold care?
Yes, for three reasons. Growth: a new line or shift can push consumption over within a year. Customers: EU buyers increasingly ask exporters for energy and emissions data. Funding: grant and interest-support programmes for efficiency projects expect a measured baseline, and green transition support schemes treat that data as part of the application.
What non-compliance costs
Article 10 says that a plant breaching the Article 7 energy management duties is first warned and given 30 days to fix the breach; if it is not fixed, an administrative fine applies. Separate fines exist for not reporting at all or refusing on-site inspection. Amounts are revalued over time, so check the current figures in the Official Gazette and Ministry announcements.
Who can be the energy manager?
The Law expects the manager to come from the plant’s own staff and hold an energy manager certificate. Certificate training is given by institutions the Ministry authorises, and fees are published each January. Maintenance, production or quality managers often take the role.
The real problem is usually data, not the certificate. Without meter readings, the manager spends month-end copying invoice PDFs into a spreadsheet, which slows reporting and invites errors.
Getting the data right from day one
A working setup usually has three layers:
- Measurement: main-incomer meters plus sub-meters on big consumers (compressors, furnaces, presses, cooling), with calibrated, documented devices.
- Collection: readings flow in automatically rather than by hand. Machine data collection (M2M and IoT) is the foundation.
- Reporting: energy data sits next to production volumes, so you can track kWh per tonne of product and prepare the annual submission quickly.
The same data feeds ISO 50001 work, carbon footprint calculations and customer or CBAM questionnaires. Collect it once and it serves four jobs, which is the core idea of the twin transition approach.
Checklist before the March submission
- Is the last twelve months of electricity, gas and other fuel use in one table, or scattered across accounting, maintenance and purchasing files?
- Is the gap between invoice consumption and your own meter readings known and explained?
- Do you have records of how new machines, added capacity or shift changes affected consumption?
- Is the energy manager’s certificate valid and the appointment letter on file?
- If an inspection comes, can you show calibration records for your measuring devices?
If two of the five answers are “no”, the issue is usually scattered data, not people. Build one source of truth first, then produce reports from it.
Where İkiz Eksen fits
İkiz Eksen builds the measurement, software and compliance chain end to end. We take data from field meters and sensors, connect it to ERP and reporting, and link energy and emissions indicators to production data. With the experience of Qera (550+ customers, 100+ ERP projects) and infrastructure on Microsoft Azure, we deliver turnkey projects across Türkiye.
We can work out together how close your consumption is to the threshold and which meters to start with. Browse our solutions or contact us.
Frequently Asked Questions
Which consumption counts toward the 1,000 toe threshold?
The Law refers to total annual energy consumption, so electricity, natural gas and other fuels are all converted to toe and added up. Check the Ministry’s reporting format for the exact conversion factors.
Can I hire an energy manager as an outside service?
For industrial enterprises the Law speaks of appointing from among employees. Outsourcing is mentioned separately for buildings. Confirm the interpretation for your plant with the Ministry or an authorised consultant.
When is the report due?
The Law requires energy consumption information to reach the General Directorate by the end of March each year. Follow Ministry announcements for the current format and system.
Why does this matter for an SME below the threshold?
Growth, export customers’ data requests and efficiency funding all call for this data. Building the metering base before you hit the threshold is cheaper and less stressful.
Is this article legally binding?
No. It is a general summary based on the text of Law No. 5627. Thresholds, fines and procedures can change; check mevzuat.gov.tr and Ministry sources before deciding.