In collaboration with a customer, Göteborg Energy connected a solar plant to the district heating system in 2000. This is the first time a solar plant is connected to the district heating system in Gothenburg so the evaluation of the project is important. The local condition in Gothenburg is not optimal for solar heat due to the large amount of waste heat in the district heating system, but in a system with no or limited access to waste heat solar heat might be good technology solution. The Evaluation focuses on the system design, installation, operation, monitoring and exchange of heat.​