It's an open source carbon footprint web application that enables users to approximate their annual carbon footprint.

In September 2022, Code for Japan developed an open-source carbon Footprint web application, Jibungoto Planet, with the National Institute for Environmental Studies. This app aims to give attention to Japanese citizens to realize climate change and let them take action to tackle global warming.

Japan plans to reduce its greenhouse gas emissions by 46% by 2030 to meet the Paris Agreement. Currently, Japan's average greenhouse gas per capita is around 7 tons per year. This must come down to about 3 tons by 2030 to meet the target. It's a vast number. 

Users can approximate their annual carbon footprint in the app by responding to questions. The National Institute for Environment Studies developed the calculation method. They used data about how people live in Japan to make the results more accurate for those in Japan.  In addition, the app guides users in taking the initial steps toward making positive changes for the environment.

In 9 months since its release, more than 7,000 people used the app. Not only user access, but we also have received many inquiries and publications from the media. It proves the high public interest and expectations, even though good and concern for decarbonization are low in Japan.

The project is ongoing, and we are improving the app and adding new features. If you're interested, please come to a one-day hackathon event, "Social Hack Day," hosted by Code for Japan. It's a monthly event; you can get more information on our website or Slack.