Aalborg CSP received an order from Stadtwerke Sondershausen GmbH for delivery of a 4.7 MW solar heating plant - a project won and developed in close coorperation with TVP Solar. 


Client:      Stadtwerke Sondershausen GmbH 
Location:   Sondershausen, Germany
Status:   Under construction
Technology:   Solar heating plant
Capacity:   4.7 MW


Danish knowhow and Swiss collector technology

The 4.7 MW solar heating plant consists of a 6,086 m² construction, based on 3105 high-yield solar vacuum collector panels by TVP Solar. This high-performance vacuum collector is capable of delivering temperatures up to 200° C and is therefore ideal for the high temperature German solar heating market. The system will besides the 6,086 m2 solar field, consist of a 1,000 m3 accumulation tank as well a full technology package for integrating the energy into the district heating system. With the vacuum collector, an annual output of over 500 kWh / m2 is achievable, which by far exceeds the output of Danish plants that use traditional solar collectors. 
The project in Sondershausen brings into the German market integration and optimization based on Danish expertise combined with Swiss innovative technology. 

Renewable energy ensures stable heating prices

For Stadtwerke Sondershausen GmbH, the project plays an important part in securing their conversion to renewable energy as well as in securing both the future supply and sustainability of the district heating supply. As an additional add-on feature, the storage tank will during wintertime be used for accumulating energy from a nearby Blockheizkraftwerk (BHKW). By integrating the two plants the possibility of optimizing heat production is increased. By introducing solar heat in the overall heat supply, both CO2-free heat production and stable heating price for 25 years are ensured. Moreover, the solar heating system in Sondershausen has very low operating and maintenance costs and the annual performance is guaranteed with a new ISO Standard Norm (ISO 24194). 


Andreas Zourellis
VP Sales - International
District heating / industrial solar technologies
Phone: +45 50 30 00 25 
​​​​​​​E-mail: azo@aalborgcsp.com