Kostadin Sirleshtov

Kostadin Sirleshtov

Managing Partner, Head of Energy, Projects and Construction for CEE, CMS Sofia

Green Transition Forum 2025, Green Transition Forum 2025, Green Transition Forum 2025
Kostadin Sirleshtov is Managing Partner of CMS Sofia and Head of Energy, Projects and Construction (EPC) for Central and Eastern Europe and for Bulgaria, where he also coordinates the Real Estate team in the office. Kostadin will be the main point of contact for TotalEnergies. Kostadin has vast experience in representation of international clients in various sectors, including major investors in the renewables sector, financial institutions and governmental authorities. He is particularly focused on advising renewables companies (in relation to solar, wind, hydro and biomass projects) on the development, operation and/or sale of their projects in Bulgaria, including on litigation matters. He has also advised major international oil & gas prospecting and exploration companies in Bulgaria on various onshore and offshore projects. Kostadin has been the lead partner advising various energy clients, such as Acwa Power, ContourGlobal, SunEdison, Enfinity, ILB Helios, DK Energy, HTMAS (Slovakia), Sky Solar (China), among others on PV projects in Bulgaria, where part of the work included legal due diligence process and transaction negotiations. Clients comment in front of Legal 500 that: “Practice head Kostadin Sirleshtov is outstanding”. He is also praised for his "huge knowledge and understanding of the sector" and is named “a real leader on the market.” In front of Chambers and Partners Europe client's comment: "If we have a difficult case, we always contact him first; he will know how to approach the situation."