Atrem S.A. provides engineering support services for large infrastructure and construction projects in Poland. The company design and construct low-voltage, medium-voltage, and high-voltage lines, high-voltage and medium-voltage substations, and buildings and industrial facilities; and offers design and formal work related to investment preparation, as well as general contractor services. It also provides various services, including design, installation, and integration of security systems, video surveillance, telecommunications and IT systems, building automation, and fire protection systems; and conceptual design, design, and implementation work in the construction, renovation, and modernization of industrial facilities, as well as their operation and maintenance, including automation, telemetry, and measurement systems. In addition, the company constructs wind farms, photovoltaic farms, cogeneration and trigeneration systems, and biogas and biomethane plants. The company was founded in 1999 and is headquartered in Bydgoszcz, Poland. Atrem S.A. operates as a subsidiary of Grupa Kapitalowa IMMOBILE S.A.