ENERGO-COMPLEX company focuses on the operation and maintenance of power transformers in a broad sense. We started our business in 1998 with production of components for on-load tap changers. The range of offered services has grown together with the dynamically developing company, covering at present five basic areas: Transformer diagnostics and comprehensive technical condition assessment Transformer asset management systems Servicing and repair, production of replaceable parts and accessories Technical advisory Special services ENERGO-COMPLEX Sp. z o.o. cooperates with Polish research centres, among others, the West Pomeranian University of Technology and the Opole University of Technology, implementing common research and development projects, which introduce numerous cutting edge technologies in regard to the offered services. This cooperation has resulted in a multi-volume book series Eksploatacja Transformatorów Energetycznych (Electrical Power Transformer Operation), which found recognition among operating engineers. Our company also organises periodic international conference Transformatory w Eksploatacji (Transformers in Operation), as well as a number of seminars and training courses consistent with the system of lifelong learning and competence improvement. Substantial investments in technical facilities, research and training programmes, as well as the exchange of experience with Polish and foreign centres specialising in issues related to the study of transformers and their operation ensure high quality of the offered maintenance and repair services. The long-time experience and vast knowledge of our workers and experts of transformer design together with the physical-chemical processes taking place therein in the course of operation serve as the basis for diagnosing the technical condition of transformers and technical advisory.