Tesgas S.A., together with its subsidiaries, engages in the construction, renovation, and modernization of gas facilities in Poland, Germany, and Spain. The company is involved in the implementation of investments related to the transmission and distribution of natural gas; and construction and renovation of high, medium, and low pressure gas networks and stations, as well as gas stations and gas boiler rooms, and facilities related to natural gas and crude oil extraction. It also designs gas facilities; conducts pressure tests of gas pipelines; and installation of THT and filling of odorizing. In addition, the company offers CNC and conventional machining; plastic processing of sheet metal; thermal burning of sheet metal; construction of tanks and pressure equipment; and production of steel casings for gas and power stations, power generators, flange connection elements, and parts of gas equipment. Further, it constructs photovoltaic installations and solar collector installations; sells and installs solar lamps; and constructs and assembly of other devices. The company was founded in 2000 and is based in Dopiewo, Poland.