Wise Energy S.A. (WSE: FMG) is a Poland-based energy company primarily engaged in electricity generation, transmission, distribution and trading; renewable energy activities; energy efficiency projects and cost optimisation services for business and institutional customers; sale of electricity and natural gas; engineering services; and other scientific and technical consulting services. The company, founded in 2008 and headquartered at ul. Adama Naruszewicza 27 lok. 2 in Warsaw, Poland, has been listed on the Warsaw Stock Exchange since July 7, 2014, and operates mainly in the Polish market with a focus on improving customer competitiveness through energy audits, tailored implementation concepts, ESG-compliant solutions, and comprehensive energy management. It was formerly known as ONE S.A. and changed its name to Wise Energy S.A. in October 2024, reflecting its strategic shift toward enhanced energy efficiency and sustainability offerings.