Member - AquaGreen

AquaGreen is a CleanTech company with unique patented technology upcycling dry and wet biomass to resources.

Type Startup or self-employed
Founded 2015
Company Size 17
Member Type
Founders Claus Thulstrup and Henning Schmidt-Petersen
Headquarters 4000 Roskilde, Denmark
Social network


AquaGreens patented combined super-heated steam dryer and pyrolysis eliminate pollutants converting wet sewage sludge into climate positive (GHG-negative) biochar and renewable energy (can be used for local or district heating). It happens using the embedded energy from the biomass itself to dry the sludge without addition of external heat. The pyrolysis further decompose drug- and pesticide- and microplastic-residues and other organic pollutants which are of concern in municipal sewage sludge. The biochar acts as carbon storage of CO2 from the atmosphere when used as a soil improver/fertilizer. It improves soils water and nutrient retention, plant yields and recycles the scarce and vital to life resource Phosphorous to the soil.
Headquarters 4000 Roskilde, Denmark

SDG’s of application

The Sustainable Development Goals are a call to action to end poverty, protect the planet and ensure peace and prosperity everywhere.
Clean water and sanitation
SDG 6 icon
Affordable and clean energy
SDG 7 icon
Industry, innovation and infrastructure
SDG 9 icon
SDG 11
Sustainable cities and communities
SDG 11 icon
SDG 12
Responsible consumption and production
SDG 12 icon

Efficient Solutions

Labelled Solutions from AquaGreen

The Solar Impulse Efficient Solution label seeks to bridge the gap between ecology and economy, bringing together protection of the environment and financial viability to show that these solutions are not expensive fixes to problems, but rather opportunities for clean economic growth.

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. To validate the Membership to the World Alliance for Efficient Solutions, the Solar Impulse Foundation only verifies that each entity is registered and has signed our principles and values stated in the following World Alliance for Efficient Solutions charter. For those Members who are also solution providers, this information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.