Aalborg CSP was selected to design and deliver a CSP system to be integrated with a biomass-organic rankine cycle (ORC) plant for combined heat and power generation in Denmark. The system is the world’s first CSP system combined with a biomass-ORC plant.


Client:       Brønderslev Forsyning
Location:    Brønderslev, Denmark
Status:    Operational
Technology:     CSP combined with biomass ORC
Capacity:    16.6MWth
CO2 savings:     23,000 tons CO2 / year

Aalborg CSP and the Danish district heating plant Brønderslev Forsyning carried out a comprehensive feasibility study on the potential to use concentrated solar power (CSP) as an add-on to a biomass-ORC plant. Based on the positive findings, Aalborg CSP was awarded the contract to develop and supply the 16.6 MWt CSP plant enabling production of both heat and electricity within one carbon-free system - a project supported by the Danish Government’s Energy Technology Development and Demonstration Programme (EUDP). 

The CSP plant consists of 40 rows of 125m parabolic trough loops with an aperture area of 26,929m2. The suns' rays are collected and reflected onto a receiver pipe wherein a fluid is heated up to 330°C. This high temperature is able to drive an electric turbine to produce electricity, but the flexibility of the system also allows production of lower temperatures for district heating purposes. To maximize yield of energy, waste heat is utilized and sent to the district heating circuit whereas electrical power is generated at peak price periods.