PKN Orlen is Central Europe's largest integrated energy group, headquartered at ul. Chemików 7 in Płock, with a major corporate office in Warsaw. Following its 2023 merger with PGNiG and Lotos, Orlen employs over 75,000 people across refining, petrochemicals, gas, and renewable energy. The legal department manages energy regulation, M&A, environmental compliance, and EU regulatory affairs.