Member - SolarSack

SolarSack is a safe and affordable alternative to water purification, using only the power of the sun to purify water.

Type Startup or self-employed
Founded 2018
Company Size 12
Member Type
Founders Alexander Løcke and Johan Juul Jensen
Headquarters 2100 København Ø, Denmark
Social network


2 billion people in the world do not have access to safe drinking water, resulting in 485,000 diarrhoeal deaths yearly. In developing countries, studies have indicated that nearly 80% of all diseases are related to “poor water” and sanitation conditions. According to the WHO, 50% of people without access to a safe water source boil their water to purify it, using biofuels like charcoal and firewood. Boiling contaminated water is both a health concern, as it contributes to deaths from indoor air pollution and great environmental concern as it emits CO2. SolarSack has developed an affordable alternative to water purification, utilizing sunlight to kill bacteria and viruses in water, making it safe to drink. The unique polymer foil and construction allows the sun’s UV-A and UV-B rays to kill the contaminants in the water in 4 hours. SolarSack can purify 4 litres of water in 4 hours and is reusable 500 times, creating a total of 2000 litres of purified water, enough for a family of four for one year.
Headquarters 2100 København Ø, 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

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.