title
YILDIRIM Energy Holding A.Ş. and its subsidiaries
- Senerji Enerji Uretim A.S. (Operations of Bayramhacili Dam & HEPP and Gullubag Dam & HEPP)
- Duzce Enerji Birligi Imalat Isletme Sanayi ve Ticaret A.S. (Hasanlar Kanal HEPP Operation)
- YILTEKNIK Enerji Sanayi ve Ticaret A.S. (Electrical Test and Maintenance Services Department)
were certified for ISO 9001: 2015 Quality Management System, ISO 14001: 2015 Environmental Management System and OHSAS 18001: 2007 Occupational Health and Safety Management System.
| Company | Certificates |
| Quality Management System | Environmental Management System | Occupational Health & Safety Management System |
| Yıldırım Enerji Holding
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| Senerji Enerji | 
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| Duzce Enerji | 
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| YILTEKNIK Enerji | 
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