Energy saving and conversion class presentation. The topic is "Japan's energy field after Fukushima"

1. Energy Saving and
Conversion
Japan energy field after
Fukushima
- main changes, future steps-
28/11/2018
MSJ0210 Energy management and planning
TalTech Materials and Processes for Sustainable Energetics
Kota Taharaguchi

2. Energy Saving and
Conversion
Contents
• Introduction
• Number of aftershocks
• Simulation before the earthquake
• What was the main cause of Fukushima Accident
• Situation around Nuclear Power Plant
• Nuclear Power Plant in Japan
• Energy Mix in Japan
• Introduction of RES
• Future step
• Reference
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3. Energy Saving and
Conversion
Introduction
● The structure of Fukushima Daiichi NPPs(Nuclear Power
Plant) operated by TEPCO
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4. Energy Saving and
Conversion
Introduction
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5. Energy Saving and
Conversion
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Number of aftershocks
● The total number of aftershocks is 225 in 2011

6. Energy Saving and
Conversion
Simulation before the earthquake
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7. Energy Saving and
Conversion
What was the main cause of Fukushima accident?
1. The preparation taken in advance were insufficient
2. Confusion of Japanese government
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8. Energy Saving and
Conversion
Nuclear Power Plant in Japan
● In 2030, Japan is tackling to archive 20-22% of the ration in Energy
production
● Currently, 7 nuclear power plants are working, but in the most of time, they
are under investigation → substantially, all nuclear power plants have
stopped
Impact of running one Nuclear Power Plant:
● Fuel Cost → 3.5-6.3 billion Euro/year can be reduced
● CO2 Emission → 2.6 million-4.8million tons/year can be reduced
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9. Energy Saving and
Conversion
Situation around Nuclear Power Plant
● Regarding resumption of operations of nuclear power plants, opponents
outnumber supporters almost double. In Japan, the restoration of public trust is
the biggest challenge.
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10. Energy Saving and
Conversion
Energy Mix in Japan
● Energy Mix is a forecast and also a vision of a desired energy structure
● By using “Energy Mix”, Japan is trying to achieve “Economic efficiency and
Environment”
Before the
Earthquake
Present In the future 10/14

11. Energy Saving and
Conversion
What is FIT system?
● FIT stands for “Feed-in Tariff“
● A feed-in tariff pays you for excess electricity generated by your solar PV
system
● Japanese government updated the system in 2016
Introduction of RES
● FIT system introduced in 2012 which causes 2.7times growth in
Renewable sector
● The purchase costs reached around 27 billion Euro and increased the
household’s amount up to 5 euro /month
Solar increases mostly
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12. Energy Saving and
Conversion
Future Step
● Based on the Strategic Energy Plan, Japan tackles the policy targets related
to Safety, Energy security, Economic efficiency, and Environment.(3E +
S)
● This plan also refers reducing dependence on nuclear power generation
as much as possible
Safety:
Top
priority
Energy Security:
Self-sufficiency: About 25%
Economic efficiency:
Reduce Electricity cost
Environment:
Reduce Greenhouse gas emission
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13. Energy Saving and
Conversion
● Public opinion wants nuclear power free, but immediate zero
corresponds to the basic requirement of energy policy
● Electric power supply should not be established only by an unstable
and expensive renewable energy power supply
● Need to change the power structure based on energy plan
Conclusion
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14. Energy Saving and
Conversion
Reference
● https://www.sciencedirect.com/science/article/pii/S030142151630595X, 「Comparing electricity transitions: A
historical analysis of nuclear, wind and solar power in Germany and Japan」, 2017, Pages 612-628
● http://www.enecho.meti.go.jp/en/category/brochures/pdf/japan_energy_2017.pdf, 「JAPAN'S ENERGY」, 2017
● http://www.energy-modelschool.jp/cms/wp-
content/uploads/2018/03/180304_%EF%BC%88%E4%B8%AD%E8%A5%BF%E5%AE%A4%E9%95%B7%EF%BC
%89%E8%AC%9B%E6%BC%94.pdf, 日本のエネルギー政策の現状と ｢エネルギー基本計画｣の検討状況
● https://www.iwanami.co.jp/files/kankyo/461/461_p02-06.pdf
● https://www.swissinfo.ch/jpn/business/%EF%BC%92%EF%BC%90%EF%BC%91%EF%BC%96%E5%B9%B4
%EF%BC%91%EF%BC%91%E6%9C%88%EF%BC%92%EF%BC%97%E6%97%A5%E3%81%AE%E5%9B
%BD%E6%B0%91%E6%8A%95%E7%A5%A8_%E7%A6%8F%E5%B3%B6%E7%AC%AC%E4%B8%80%E5
%8E%9F%E7%99%BA%E3%81%AE%E4%BA%8B%E6%95%85%E5%BE%8C-
%E6%97%A5%E6%9C%AC%E3%81%AE%E3%82%A8%E3%83%8D%E3%83%AB%E3%82%AE%E3%83%
BC%E3%82%B7%E3%83%95%E3%83%88%E3%81%AF%E3%81%A9%E3%81%86%E9%80%B2%E3%82
%93%E3%81%A7%E3%81%84%E3%82%8B%E3%81%AE%E3%81%8B/42600182
● http://r-cube.ritsumei.ac.jp/repo/repository/rcube/5315/PS21_3ueta.pdf
● https://www.isep.or.jp/images/press/ISEP_StrategyNo2.pdf
● https://www.jstage.jst.go.jp/article/jalps/51/1/51_229/_pdf/-char/ja
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15. Energy Saving and
Conversion
Thank you for your attention!
Any questions?