| Year | 2022 – 2023 |
| Employer | Ministry of Transport and Infrastructure |
| Main Contractor | CKKÖ (Cengiz-Kolin-Kalyon-Özgün) |
| Work Description | Turnkey Electrical Works of the Stations |
| Location | İstanbul/Turkey |
Success Stories
| Year | 2022 |
| Employer | Intel / USA |
| Main Contractor | Siemens Turkey |
| Work Description | Outfitting of E-Houses (MV, LV, UPS, Lighting, Cabling) |
| Location | Adana/Turkey |
| Year | 2022 |
| Employer | Linde / USA |
| Main Contractor | Siemens Turkey |
| Work Description | Outfitting of E-Houses (MV, LV, Compensation, UPS, Lighting, Cabling) |
| Location | Ankara / Turkey |
| Year | 2022 |
| Employer | SICIM / Italy |
| Main Contractor | Mestaş – ABB Turkey |
| Work Description | Outfitting of E-Houses (MV, LV, UPS, Lighting, Cabling) |
| Location | Adapazarı /Turkey |
| Year | 2020-2022 |
| Employer | İş Bank |
| Main Contractor | Siemens Turkey |
| Work Description | Tower-1, Infrastructure Renovation Works (Data, Lighting Automation, Fire Alarm, CCTV, etc.) |
| Location | İstanbul/Turkey |
| Year | 2020-2022 |
| Employer | Besa A.Ş. |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrification Solution |
| Location | Bodrum/Turkey |
| Year | 2020-2022 |
| Employer | Istanbul Metropolitan Municipality |
| Main Contractor | ABB Turkey |
| Work Description | Electrical Installation Works of MV-DC-LV Switchgears, Transformers |
| Location | Istanbul/Turkey |
| Year | 2020-2022 |
| Employer | Istanbul Metropolitan Municipality |
| Main Contractor | ABB Turkey |
| Work Description | Electrical Installation Works of MV-DC-LV Switchgears, Transformers |
| Location | Istanbul/Turkey |
| Year | 2014-ongoing |
| Employer | Siemens Turkey – Siemens Energy Turkey |
| Main Contractor | BükemGrup |
| Work Description | Project Base Technical Expert Leasing |
| Location | Turkey |
| Year | Ongoing |
| Employer | Various Customers |
| Main Contractor | BükemGrup |
| Work Description | HV-MV-LV Power Distribution Systems Commissioning, Maintenance Works |
| Location | Turkey |
| Year | 2021 |
| Employer | Tüprag – Eldorado Gold |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrification Solution of the Plant |
| Location | Uşak/Turkey |
| Year | 2021 |
| Employer | Shell Nigeria |
| Main Contractor | Vonk EUA B.V. / Netherlands |
| Work Description | Turnkey Outfitting of E-Houses (MV, LV, UPS, Cabling, Tests) |
| Location | Ankara/Turkey |
| Year | 2020-2021 |
| Employer | Turkish State Railways (TCDD) |
| Main Contractor | KKC (KOLİN-KALYON-CENGİZ J.V.) |
| Work Description | MV System, Transformers Maintenance of Whole Stations |
| Location | Istanbul/Turkey |
| Year | 2018-2021 |
| Employer | Cengiz Holding |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrification Solution |
| Location | Adıyaman and Siirt/Turkey |
| Year | 2019-2020 |
| Employer | NATA Holding |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrification Solution |
| Location | Istanbul/Turkey |
| Year | 2020 |
| Employer | Sanko Energy |
| Main Contractor | Siemens Energy |
| Work Description | Electrical Installation Works of HV Switchyard, Transformers, EBOP |
| Location | Karaman/Turkey |
| Year | 2018-2021 |
| Employer | Istanbul Metropolitan Municipality |
| Main Contractor | Alarko Contracting Group |
| Work Description | Turnkey Electrification Solution of the Stations |
| Location | Istanbul/Turkey |
| Year | 2021 |
| Employer | Air Products / US |
| Main Contractor | Siemens Turkey |
| Work Description | Outfitting of E-Houses (MV, Transformers, LV, VFD, UPS, Lighting, Fire Systems, Cabling) |
| Location | Adana/Turkey |
| Year | 2021 |
| Employer | Anagold Mining |
| Main Contractor | Siemens Turkey |
| Work Description | Outfitting of E-Houses (LV, VFD, UPS, PLC, Lighting, Fire System, Cabling) |
| Location | Adana/Turkey |
| Year | 2019 |
| Employer | Shell Iraq |
| Main Contractor | Siemens Turkey |
| Work Description | Outfitting of E-Houses (MV, Transformer, LV, UPS, Lighting, Cabling) |
| Location | Adana/Turkey |
| Year | 2019 |
| Employer | Istanbul Metropolitan Municipality / Hitachi Zosen Inova |
| Main Contractor | Siemens Turkey |
| Work Description | Outfitting of E-Houses (LV, UPS, Lighting, Cabling) |
| Location | Adana/Turkey |
| Year | 2016-2017 |
| Employer | GAMA Power Systems |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrification Solution of the Plant |
| Location | Kırıkkale/Turkey |
| Year | 2016-2017 |
| Employer | Limak Holding |
| Main Contractor | GAMA Power Systems |
| Work Description | Electrical Installation of the Plant |
| Location | Kırklareli/Turkey |
| Year | 2016-2019 |
| Employer | Turkish State Railways (TCDD) |
| Main Contractor | Siemens Mobility |
| Work Description | Electrical Installation Works of Weak Current Systems |
| Location | Istanbul/Turkey |
| Year | 2018 |
| Employer | Turkish Electricity Transmission Authority (TEİAŞ) |
| Main Contractor | Siemens Turkey |
| Work Description | Retrofitting Works of HV, MV, LV Systems |
| Location | Istanbul/Turkey |
| Year | 2017-2019 |
| Employer | Turkish General Directorate of Highways (KGM) |
| Main Contractor | Siemens Mobility |
| Work Description | Electrical Installation Works of MV, LV, Tunnel Lightings, Traffic Signalization Systems, Turnkey Substation Construction |
| Location | Ordu/Turkey |
| Year | 2017-2018 |
| Employer | Tümad Mining Industry |
| Main Contractor | Siemens Turkey |
| Work Description | Electrical Installation Works of the Plant |
| Location | Çanakkale/Turkey |
| Year | 2017-2018 |
| Employer | Dökümcüler Organized Industrial Zone |
| Main Contractor | Siemens Turkey |
| Work Description | Turnkey Construction of Substations, Electrical Installation Works |
| Location | Ankara/Turkey |
| Year | 2016-2017 |
| Employer | GAMA Power Systems |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrification Solution of the Plant |
| Location | Erbil/Iraq |
| Year | 2016-2017 |
| Employer | Cengiz Holding |
| Main Contractor | BükemGrup |
| Work Description | Turnkey Electrical Retrofitting Solution |
| Location | Samsun/Turkey |
| Year | 2016-2017 |
| Employer | Tüpraş |
| Main Contractor | Siemens Turkey |
| Work Description | Electrical Installation Works of the Plant |
| Location | Kırıkkale/Turkey |
| Year | 2016-2017 |
| Employer | ICA J.V. |
| Main Contractor | Siemens Mobility |
| Work Description | Electrical Installation Works of MV, LV, Bridge Lightings, Traffic Signalization Systems |
| Location | Istanbul/Turkey |
| Year | 2015-2016 |
| Employer | GAMA Power Systems |
| Main Contractor | GAMA |
| Work Description | Electrical Installation Works of the Plant |
| Location | Boufarik/Algeria |
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Bükem Grup