--- title: "Scientist Invents Toilet That Turns Human Feces Into Cryptocurrency" description: "A researcher at a university in South Korea has come up with a toilet that can turn human waste into power -- and it's on the blockchain." date: "2021-07-09" modified: "2021-07-26" authors: - name: "Victor Tangermann" job_title: "Senior Editor" link: "https://futurism.com/authors/victor" url: "https://futurism.com/the-byte/toilet-poop-green-energy" categories: - "Blockchain" - "Cryptocurrency" - "Future Society" tags: - "South Korea" - "the digest" - "toilet" - "toilets" - "waterless toilet" --- # Scientist Invents Toilet That Turns Human Feces Into Cryptocurrency ![A researcher at a university in South Korea has come up with a toilet that can turn human waste into power -- and it's on the blockchain.]() *\Image: UNIST\* ## Toilet Generator A researcher at a university in South Korea has devised a toilet that turns human waste into power, [*Reuters* reports](). As a bonus incentive, each use rewards, uh, poopers with a small amount of digital currency that they can trade in for a coffee or a cup of noodles on campus. The toilet first pumps your excrement into an underground tank, which means it uses less water right off the bat when compared to a traditional toilet. Microorganisms then break down the waste into methane, a usable source of energy. In short, it's a delightful new method of turning sewage into power. ## Making Manure "If we think out of the box, feces has precious value to make energy and manure," inventor Cho Jae-weon, an urban and environmental engineering professor at the Ulsan National Institute of Science and Technology (UNIST), told *Reuters*. "I have put this value into ecological circulation." The toilet could turn roughly a pound of solid human waste, the average amount a human poops in a day, into an impressive 50 liters of methane gas, according to Cho. That means it can generate half a kilowatt hour of electricity, enough to drive an electric car for three quarters of a mile. And because its 2021 — a day and age in which nothing is safe from the world of cryptocurrencies — Cho came up with a virtual currency called Ggool, or "honey" in Korean. Every use of the toilet scores you 10 Ggool per day, which can be used to buy stuff on the university's campus. "I had only ever thought that feces are dirty, but now it is a treasure of great value to me," a postgraduate student Heo Hui-jin who's both earned and spent Ggool, told *Reuters*. "I even talk about feces during mealtimes to think about buying any book I want." **READ MORE:** [South Korean toilet turns excrement into power and digital currency]() \[*Reuters*\] **More on toilets:** *[NASA Says It Needs a New Space Toilet for the Artemis Moon Missions]()* ## Author I've been at Futurism since 2017, where my role has evolved to encompass design, writing, and increasingly editing. I've always been fascinated by space exploration and advanced transportation, which I've leaned into by interviewing luminaries in those fields while closely following the dimensions of policy and regulation that allow next-generation projects to succeed -- or, sometimes, to fail. I'm also keenly interested in the effects of generative AI on society, policies, and democratic institutions, as well as clean energy, physics and biology, and the vagaries of tech leadership. My work for Futurism has been cited by publications including Ars Technica, Gizmodo, PC Magazine, Jalopnik, Fox News, and the New York Post. I spent my childhood living in locations including Manila, the Philippines, and Geneva, Switzerland, attended McGill University, and now live in Toronto, Canada. Before Futurism I worked at AskMen and a small photography studio. In my free time, I'm an avid gardener, foodie, and craft beer lover, as well as a maker of artisanal hot pepper sauces. I have a magnificent dog named Freida. ### Author social links [Bluesky]()