Loowatt & a private/public model

Loowatt's innovation is simple yet profound - toilets with a simple sealing technology to contain human waste with biodegradable film, inhibiting odour, and negates the need for water and electricity. It is designed to be used with anaerobic digestion technology, to provide a source of biogas that offsets the costs of the toilets and even provides income opportunity. 

The organisation supplies the units as festival toilets in the developed world, as a sanitation initiative in the developing world - an interesting sustainable model. 

https://loowatt.com/