Scientists say toilet can be used to supply electricity in disaster zones . Bristol system uses microbial fuel stacks in toilets which feed on urine . Comment: Its inventors say the system could cost as little as £600 ( $ 900 ) to set up .
Scientists say toilet can be used to supply electricity in disaster zones . Bristol system uses microbial fuel stacks in toilets which feed on urine . This then creates biochemical energy that can be turned into electricity . Its inventors say the system could cost as little as £600 ( $ 900 ) to set up .