Law No. 5627 on Energy Efficiency (5627 sayılı Enerji Verimliliği Kanunu)

Overview

Law No. 5627 on Energy Efficiency was published in the Official Gazette no. 26510 on 2 May 2007. Its stated purposes are the efficient use of energy, avoiding waste, easing the burden of energy costs on the economy and protecting the environment (Article 1). It is a framework law, with detailed procedures set by regulations. This record is based on the consolidated text on mevzuat.gov.tr as of November 2026. The provisions most relevant to data center design are in Article 7.

Commercial, service and public buildings with a floor area of at least 20 000 m2 or annual energy consumption of 500 TEP or more must appoint or contract an energy manager. Non-public industrial enterprises consuming 50 000 TEP per year or more must set up an energy management unit. The law also regulates support and contracting mechanisms. Efficiency projects can be supported up to 30% of cost, capped at 15 million TL and revalued annually (Article 8(1)(a), as amended in 2024).

Public bodies may sign energy performance contracts of up to 15 years (Additional Article 1). Large data-centre buildings typically exceed the floor-area or energy thresholds and therefore fall under the energy-manager obligation. For detail not covered in this record, the related regulations apply: the Regulation on Increasing Efficiency in the Use of Energy Resources and Energy, and the Regulation on Energy Performance in Buildings. ISO 50001 is a related management system standard.

Key points

1. Purpose: efficient use of energy, avoiding waste, easing the burden of energy costs and protecting the environment (Article 1).
2. Commercial, service and public buildings with at least 20 000 m2 or annual consumption of 500 TEP or more must appoint or contract an energy manager (Article 7(1)(a)(2)).
3. Non-public industrial enterprises consuming 50 000 TEP/year or more must set up an energy management unit (Article 7(1)(a)(3)).
4. Efficiency projects can be supported up to 30% of cost, capped at 15 million TL (revalued annually) (Article 8(1)(a), amended 2024).
5. Public bodies may sign energy performance contracts of up to 15 years (Additional Article 1).
6. Large data-centre buildings typically exceed the floor-area or energy thresholds.
7. Related instruments: the related regulations and ISO 50001.

Using it in design

• In the operations/energy module, compute annual energy in TEP (toe) from the energy model.
• Flag when the site crosses the 500 TEP / 20 000 m2 thresholds so the owner can plan an energy manager and reporting.
• Reuse PUE and energy outputs for those reports.
• For public-sector clients, consider the energy performance contract option in the investment model.
• Verify current values from the legislation, since support terms and caps change annually.

Who should read it

Data center owners, operators and engineers in Turkey responsible for energy efficiency and regulatory compliance.

Related standards

• Enerji Kaynaklarının ve Enerjinin Kullanımında Verimliliğin Artırılmasına Dair Yönetmelik
• Binalarda Enerji Performansı Yönetmeliği
• ISO 50001

Publication details

Authors

Türkiye Büyük Millet Meclisi

Publisher

Türkiye Büyük Millet Meclisi

Year

2007

Document number

Kanun No. 5627 (RG 26510, 02.05.2007)

Document language

Turkish

Source type

Turkish regulation

Access

Free to read

Licence

Bibliographic reference only — the document is not redistributed here; confirm reuse terms at the original source

Citation