High-efficiency PV systems on unused bodies of water

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Floating-PV – an important role for the energy transition in Germany

Floating-PV systems on unused bodies of water – from disused coal quarries and mineral extraction pits to reservoirs – can make an important contribution to the green energy revolution in Germany and diffuse the heated debate on the use of land in residential and agricultural areas and on the development of renewable sources of energy. 

Innovative approach for the mitigation of land-use conflicts

Every day, 58 hectares are designated as residential and traffic areas in Germany alone – and this is equivalent to around 82 football pitches. By covering 10% of the artificial lakes suitable for Floating-PV, and taking all exclusion criteria into account (nature and countryside protection, recreational/leisure activities, etc.), the potential for Floating-PV in Germany is still over 2 GWp. 410,000 average German households can be supplied with power in this way with a neutral impact on the environment.

With this solar energy production, 1.1 million tons of CO2 can be saved each year. Additionally, the Fraunhofer ISE estimates that Floating-PV can potentially generate 1.6 to 5.5 GW in Germany just from the lakes from lignite mines.

Advantages for owners of bodies of water

With this technology, owners of artificial lakes can basically get twice the benefit from their otherwise underused bodies of water. The enormous advantages of Floating-PV, such as minimising evaporation by covering the water surfaces, as well as their comparatively easy installation and maintenance, quickly compensate for the somewhat higher installation costs of Floating-PV systems compared to ground-mounted solar systems of the same size. The reduction in evaporation through Floating-PV systems can play a decisive role, especially for hydraulic or pump storage facilities and water reservoirs. 


More water evaporates from reservoirs than is consumed by humans.

Prof. Eicke Weber, UC Berkeley (ret)

Floating-PV systems from the market leader 

Following the successful realisation of our first Floating-PV system with an output of 2.1 MWp, 8.4 MWp and 14.5 MWp, we have in the meantime put an additional 27.4 MWp on water with our “Bomhofsplas” project and have realised the largest Floating-PV system in the world outside of China.

Our expertise

As a full service provider, we handle everything from project development, planning, procurement, financing and turnkey construction, right through to the commissioning and operational management. 

  • Planning and technical consulting 
  • Reporting and analysis 
  • Project development
  • Procurement from long-term partners 
  • Turnkey construction 
  • Financing 
  • Direct marketing 
  • Power purchase agreements (PPAs) 
  • Operational management

Our certified Floating-PV solution

Having determined that there was no Floating-PV system on the market that met our requirements and standards, we developed a new substructure together with the renowned Zimmermann PV-Stahlbau GmbH technology experts. This was ideally complemented by our certified electrical and mechanical system design. Find out more here.

We recently received the Innovation Award for our innovative total Floating-PV solution from pv magazine.

Do you have a water surface available?

We are interested in artificial and unused bodies of water (e.g., decommissioned brown coal and sand quarries, artificial reservoirs) with a minimum area of approx. 10 ha.

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