Thanks to electro-active micro-organisms that feed on elements in urine and then produce electrons, bio-engineers at Bristol Robotics Lab have found a way to turn pee into electricity. A fuel cell pack developed by the scientists currently feeds on two liters of urine and, in turn, produces 30 to 40 milliwatts of power. This energy has been used to power smartphones (slowly), LCD displays and even lights. The system will be trialled at the upcoming Glastonbury Music Festival so that attendees can transform their pee to power.
Urine Converted to Electricity at Glastonbury Festival