Electricity Market Connection and System Usage Regulation (Elektrik Piyasası Bağlantı ve Sistem Kullanım Yönetmeliği)

Overview

The Electricity Market Connection and System Usage Regulation is an EPDK (Energy Market Regulatory Authority) regulation published in Official Gazette no. 28896 of 28 January 2014. It governs how consumers and generators connect to and use the Turkish transmission (TEIAS) and distribution networks. This page rests on the consolidated text including amendments up to the Official Gazette of 19 October 2026.

The regulation fixes who to apply to, response times, the contracted capacity (anlaşma gücü) concept and penalties for exceeding it, ownership boundaries, metering location by transformer size, and guarantees. A consumer wanting to connect to the transmission system applies to TEIAS, which must answer in writing, with reasons, within 45 days of the application. The capacity allocated in the connection and system-use agreement is the user's contracted power, and the maximum power drawn at the transmission connection point may not exceed it.

Ownership and metering rules bear directly on design. For facilities connected above 36 kV, the transmission ownership boundary starts at the last pole after the user's switchyard and includes the medium-voltage feeders of TEIAS substations. The metering point is on the secondary main busbar inlet where the consumer transformer is below 630 kVA, and on the inlet (primary) side of the step-down transformer at 630 kVA and above.

For distribution users, metered maximum demand should not exceed contracted power; non-residential users exceeding it by more than 20% two months in a row can be required to act. Distribution connection applications go to the distribution company of the region, and those companies must complete online application infrastructure by 1.1.2027. The text is official legislation; for the current wording, rely on mevzuat.gov.tr.

Key points

1. A consumer wanting to connect to the transmission system applies to TEIAS, which must answer in writing with reasons within 45 days (Article 6(1)).
2. Capacity allocated in the agreement is the contracted power; maximum drawn capacity at the transmission connection point may not exceed it (Article 7(1)).
3. Above 36 kV, the transmission ownership boundary starts at the last pole after the user's switchyard (Article 8(1)).
4. Distribution users: metered maximum demand should not exceed contracted power; non-residential users exceeding it by over 20% two months in a row can be required to act (Article 14(1)-(2)).
5. Metering point: below 630 kVA on the secondary main busbar inlet; 630 kVA and above on the primary side of the step-down transformer (Article 15(1)(b)).
6. Distribution applications go to the regional distribution company; online application infrastructure due by 1.1.2027 (Article 11(1); Provisional Article 11).
7. Source: RG 28896 (28.01.2014), consolidated with amendments up to 19.10.2026.

Using it in design

• Grid-connection wizard (TR profile): ask for contracted power and voltage level, route requests above 36 kV to TEIAS and lower ones to the regional distribution company.
• Size the agreed capacity with growth phases so the design does not exceed it.
• Place revenue metering on the MV side when transformer capacity is 630 kVA or more.
• Draw the ownership boundary on the single-line diagram.
• For non-residential use, build the overrun threshold (20%, two months) into load-monitoring alerts.

Who should read it

Electrical designers, project developers and energy managers planning a data center grid connection, capacity request and substation ownership boundary.

Related standards

• Elektrik Şebeke Yönetmeliği
• 6446 sayılı Elektrik Piyasası Kanunu
• Elektrik Dağıtım Sistemi Yönetmeliği

Publication details

Authors

Enerji Piyasası Düzenleme Kurumu (EPDK)

Publisher

Enerji Piyasası Düzenleme Kurumu (EPDK)

Year

2014

Document number

RG 28896 (28.01.2014)

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