After the concession expired in 1981, the town of Chur and the surrounding municipalities of Calfreisen, Castiel, Churwalden, Lüen, Maladers and Praden founded the Gemeinde-korporation Kraftwerk Chur-Sand (GKC) in order to make the use of hydropower from the Plessur and Rabiosa rivers as efficient as possible. In the following years, the plant was successively modernized and automated, so that today only a few employees are needed to ensure the operation of the power plant. After the Rabiosa reservoir was completely buried by mud, debris and stones during a flood in 2002, GKC decided to demolish the dam wall and build a new, modern weir system.