Tremonia Süd: Construction of an underground district heating pipeline DN 400/DA 560 and smaller with a route length of approx. 1,290 m plus house connections in Dortmund.

Tremonia Süd: Dortmunder Energie- und Wasserversorgung GmbH (DEW21) is planning to expand its district heating supply in Dortmund.

Part of this tender are mainly civil engineering and pipe construction work for the construction of buried plastic jacket pipes of various nominal widths in public transport areas, private land and buildings in the Dortmund city area.