A Local Perspective on Life in Tsukuba, Ibaraki, Japan.

One Person, One Day, One Kilogram Reduction in CO2

Team Minus Six is attempting to reach Japan’s target of a 6% reduction in greenhouse gas emissions through grassroots activities. A 6% reduction means that households must reduce their emissions by 38,000,000 tons and offices must reduce their emissions by 69,000,000 tons. These targets are reachable if people make some changes to their lifestyle and working habits. The team proposes that everyone in Japan try to reduce their emissions by 1kg per day.

The guidelines for this program are outlined on the Team Minus 6 website. You can fill in the challenge form to see how
much of a reduction you can make with a change in your habits. These pages are in Japanese, but the possible changes you can make are listed below. Choose a combination of options that equals 1kg (1000g).

Air Conditioning and Heating

  • During the summer, set your air conditioner up two degrees from 26 to 28. (83g)
  • During the winter, set your heater down two degrees from 22 to 20. (96g)


  • Wash yourself with bath water and stop using the shower. (371g)
  • Reduce your shower time by one minute per day. (74g)
  • Use the leftover bathwater in your washing machine. (7g)
  • Do not leave an interval between bathtimes of family members. (86g)

Product Choice

  • Exchange your air conditioner for a new low-energy unit. (104g)
  • Exchange your refrigerator for a low-energy unit. (132g)
  • Exchange your incandescent bulbs for fluorescent bulbs. (45g)


  • Reducing your idling time by 5 minutes. (63g)
  • Use buses, trains, or bicycles to get to work or do shopping. (180g)
  • Accelerate slowly (eco-start). (207g)
  • Don’t speed. (73g)

Shopping and Garbage

  • Carry an eco-bag when you go shopping and select vegetables that are not overly wrapped. (62g)
  • Carry a refillable water bottle and reduce your use of plastic PET bottles. (6g)
  • Separate your garbage properly and recycle waste plastic. (52g)


  • Reduce the use of your air conditioner by one hour. (26g)
  • Reduce the use of your heater by one hour. (37g)
  • Turn your appliances off at the main switch and do not leave them on standby. (65g)
  • Do not use the “keep warm” function on your rice cooker. (37g)
  • Do not use the “keep warm” function on your rice cooker overnight. (37g)
  • Instead of using the “keep warm” function on your rice cooker, warm up leftover (frozen) rice in the microwave. (1g)
  • Reduce the time that lightbulbs are left on. (2g)
  • Turn off the (CRT) television when you are not watching it. (13g)
  • Keep the lid down on bidet toilets that use warm water. (15g)
  • Reduce the heat on your toilet seat warmer.(11g)
  • Reduce the amount of time that your fridge door is open. (3g)
  • Reduce the use of your desktop computer by one hour per day. (13g)
  • Reduce the use of your laptop computer by one hour per day. (2g)


  • Use solar power. (670g)
  • Use solar power to heat water. (408g)
  • Install a rooftop garden. (107g)
  • Ensure that your refrigerator has been installed an adequate distance away from other objects. (19g)
  • Do not cram too many things into your refrigerator. (18g)
  • Set up your gas stove so the bottom of the pot is not far away from the flame. (5g)
  • Dry the bottoms of your pans and kettles before putting them on the stove to heat. (1g)
  • Set your hot water heater at a low temperature when doing the dishes. (29g)
  • Exchange your hot water heater for a more efficient model (CO2 heat pump water heater). (607g)
  • Exchange your hot water heater for a more efficient model (latent heat recovery water heater). (208g)


  • Hi Shaney,

    Thanks for posting such a great information. Many of us never informed by anyone about this and it should be given to everyone. Is this ok to send this information to my friends who may be interested in this information? Please let me know. Thanks.

  • Shaney says:

    Hi Sushil,

    Of course! Forward this post freely. I hope that with this kind of information, we can all start to make better decisions about our regular activities.