‘Pee power’; university unveils toilet that can produce electricity

A PROTOYPE TOILET that can generate electricity from urine has been unveiled on the campus of the University of the West of England (UWE).

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Researchers at the Bristol-based university and Oxfam have been working on the urinals in the hopes that pee-power technology can be used to light cubicles in refugee camps which are often dark and dangerous places particularly for women.


Students and staff are being asked to use the urinal to donate pee to fuel microbial fuel cell (MFC) stacks that generate electricity to power indoor lighting.


The research team is led by Professor Ioannis Ieropoulos, Director of the Bristol BioEnergy Centre located in the Bristol Robotics Laboratory at UWE Bristol.


Professor Ieropoulos says, “We have already proved that this way of generating electricity works. Work by the Bristol BioEnergy Centre hit the headlines in 2013 when the team demonstrated that electricity generated by microbial fuel cell stacks could power a mobile phone. This exciting project with Oxfam could have a huge impact in refugee camps.


“The microbial fuel cells work by employing live microbes which feed on urine (fuel) for their own growth and maintenance. The MFC is in effect a system which taps a portion of that biochemical energy used for microbial growth, and converts that directly into electricity – what we are calling urine-tricity or pee power. This technology is about as green as it gets, as we do not need to utilise fossil fuels and we are effectively using a waste product that will be in plentiful supply.”


The urinal on the University campus resembles toilets used in refugee camps by Oxfam to make the trial as realistic as possible. The technology that converts the urine into power sits underneath the urinal and can be viewed through a clear screen.