Off-grid sustainable sanitation

Gallery Off-grid sustainable sanitation 1
Gallery Off-grid sustainable sanitation 1
May 2020
Headquarters Brixton Hill, Tulse Hill, London SW2 1JE, UK

Off-grid sustainable sanitation - Waterless flush toilets and sanitation solutions for everyone, everywhere

Loowatt has developed a waterless flush toilet and sanitation solution that elegantly addresses one of today’s toughest challenges: to create clean living environments in a world where people are many, and water is increasingly scarce.

This patented toilet-and-refill system offers the marvel of a flush toilet without the water, hygienically and odourlessly capturing waste for value-generating treatment. Loowatt systems facilitate the safe capture, containment and transport of waste to treatment centres. This versatile plug-and-play processing equipment offers utilities a source of feedstock for diverse waste-to-value systems including anaerobic digestion (waste-to-energy) and nutrient recovery. Loowatt services in the UK and Madagascar have provided a great toilet experience to over 250,000 customers and processed more than 300 tons of waste in utility-run facilities that generate energy and fertiliser.

  • /

Key features

  • Carbon footprint per average Loowatt flush is estimated to be 4 gCO2e compared to an average of 7gCO2e per water-flush
  • Captures waste for value-generating treatment, providing a valuable feedstock for anaerobic digestion that captures methane emissions for conversion to power


  • Payback time reached under 1 year
  • Can increase gross margin on services by 10-30% compared to conventional toilets

Activity Region

  • /
  • Headquarters
  • Activity

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. 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.