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Environmental and Energy Policy Lab
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A lab that approaches energy poverty and just decarbonization through economics and ethics.
AboutAbout the lab
Sufficient energy for everyone
The Environmental and Energy Policy Lab studies environmental and energy issues from the perspectives of economics and ethics.
On the lab's website, it is introduced under the name "Environmental and Energy Economics & Energy and Climate Ethics Lab."
The lab deals with "energy poverty," where households cannot use enough energy for heating, cooling, and other needs, and with "energy sufficiency," where households can use energy at a sufficient or appropriate level.
The lab considers how to reconcile climate change measures with securing the energy people need for their basic living.
Key terms
- Energy poverty
- The condition of being unable to use enough of the energy services needed for daily life, such as heating, cooling, hot water, and cooking
- Energy sufficiency
- The condition in which a person can use the energy services needed for daily life at a sufficient or appropriate level
- Subsistence emissions
- Carbon dioxide emissions generated by using the energy services needed for a minimum standard of living
NewsLab news
"Energy Justice: Toward Just Decarbonization" has been published, with a chapter written by the professor
A co-authored paper on elderly single-person households and decarbonization has been issued as a press release
The professor's paper has received the University of Tsukuba Institute of Systems and Information Engineering Best Paper Award 2025
ResearchResearch themes
The lab studies environmental and energy issues from the perspectives of economics and ethics. Its themes include energy poverty, energy sufficiency, and an equitable energy transition.
*Illustrative imageEnergy Poverty
The lab studies the condition of being unable to use enough of the energy services needed for daily life, such as heating, cooling, hot water, and cooking. It has shown that the energy poverty rate and vulnerability have risen in Japan since the Great East Japan Earthquake.
*Illustrative imageEnergy Sufficiency
The lab studies energy sufficiency, the condition in which people can use the energy services needed for daily life at a sufficient or appropriate level. Distinguishing it from both poverty and excess, the lab approaches it as a field where economics meets philosophy and ethics.
*Illustrative imageSubsistence Emissions and Fairness in Climate Policy
The lab studies carbon dioxide emissions generated by using the energy services needed for a minimum standard of living (subsistence emissions). Noting that these amounts differ greatly by income and region, it asks how fair climate change policy is.
*Illustrative imageDouble Energy Vulnerability
The lab assesses, for Japan, situations in which energy poverty and transport poverty overlap. A paper co-authored with UK researchers shows that this vulnerability is very high among elderly, low-income households in rural areas of northern Japan and Okinawa.
MembersFaculty
- ProfessorShinichiro Okushima
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Renewable Energy Advocacy” Esthee2010 / CC BY-SA 4.0 (cropped)
- Energy Poverty: “India - Kolkata electricity meters - 3832” Jorge Royan / CC BY-SA 3.0 (cropped)
- Energy Sufficiency: “Gas kitchen, Kenya” GioRan / CC BY-SA 4.0 (cropped)
- Subsistence Emissions and Fairness in Climate Policy: “Coal-Fired Power Plant Emissions Obscuring Solar Radiation” PlainVector / CC0 (cropped)
- Double Energy Vulnerability: “Road transportation in rural Nepal” Adman Payne / CC BY-SA 4.0 (cropped)
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（作道 真理） ): “Singapore Recycling-bins-01” CEphoto, Uwe Aranas / CC BY-SA 3.0 (cropped) - Related lab (黒瀬研究室): “No Known Restrictions Trading Floor, New York Stock Exchange (Highsmith LOC) ( )” Carol M. Highsmith / Public domain (cropped)
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（小西 葉子） ): “Data Analysis ( )” IAEA Imagebank / CC BY 2.0 (cropped) - Related lab (都市政策科学研究室): “A view of a sub urban area of Guatemala City in Guatemala” Jose Hernandez / CC BY-SA 2.0 (cropped)
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