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H-Index
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Japan 111 Scientists H-Index Engineering & Technology / Energy Engineering Rankings - 2026

Track the real-time academic impact of 2.6 million scientists across 221 countries. The H-Index Rankings evaluate both total and last 5 years’ H-index values, offering the most transparent measure of scholarly recognition. Compare global, continental, national, and institutional performance across 13 major fields and 221 disciplines.

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Total 111 scientist , 791 institution , Updates every 3 days
* Total H Index Rankings

Rankings

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18,818
World Rank
Japan
276
Country Rank
University of Tokyo Logo
26
University
Ranking Based On Selection:
1
Takayasu Sakurai
University of Tokyo Tokyo, Japan
Engineering & Technology / Energy Engineering
Energy-efficient micro-electronics design | Power electronics | Flexible electronics desig

H-Index Metrics

  • Total
    86
  • Last 5 Years
    33
  • Last 5 Years / Total
    0.384
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* Total H Index Rankings

Rankings

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32,448
World Rank
Japan
504
Country Rank
University of Tsukuba Logo
5
University
Ranking Based On Selection:
2
Yutaka Moritomo
University of Tsukuba Tsukuba, Japan
Engineering & Technology / Energy Engineering
energy material | strongly correlated electron syste

H-Index Metrics

  • Total
    73
  • Last 5 Years
    31
  • Last 5 Years / Total
    0.425
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* Total H Index Rankings

Rankings

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35,914
World Rank
Japan
573
Country Rank
Yokohama National University Logo
5
University
Ranking Based On Selection:
3
Naoaki Yabuuchi
Yokohama National University Yokohama, Japan
Engineering & Technology / Energy Engineering
Energy Storage | Solid-State Chemistry | Batter

H-Index Metrics

  • Total
    70
  • Last 5 Years
    54
  • Last 5 Years / Total
    0.771
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* Total H Index Rankings

Rankings

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43,228
World Rank
Japan
716
Country Rank
Kyoto University Logo
65
University
Ranking Based On Selection:
4
Yoshiharu Uchimoto
Kyoto University Kyoto, Japan
Engineering & Technology / Energy Engineering
Battery | Fuel cells | Water electrolysis | Electrochemistry | solid state ionic

H-Index Metrics

  • Total
    66
  • Last 5 Years
    46
  • Last 5 Years / Total
    0.697
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* Total H Index Rankings

Rankings

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48,169
World Rank
Japan
809
Country Rank
University of Hyogo Logo
3
University
Ranking Based On Selection:
5
Seigo Ito
University of Hyogo Kobe, Japan
Engineering & Technology / Energy Engineering
solar cell

H-Index Metrics

  • Total
    64
  • Last 5 Years
    37
  • Last 5 Years / Total
    0.578
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* Total H Index Rankings

Rankings

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49,062
World Rank
Japan
830
Country Rank
University of Tokyo Logo
55
University
Ranking Based On Selection:
6
Muhammad Aziz
University of Tokyo Tokyo, Japan
Engineering & Technology / Energy Engineering
Energy Systems | Heat Transfer | Hydrogen/Ammonia Production-Storage-Utilization | Carbon-Free System | Electric Vehicle Utilizatio

H-Index Metrics

  • Total
    63
  • Last 5 Years
    54
  • Last 5 Years / Total
    0.857
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* Total H Index Rankings

Rankings

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53,197
World Rank
Japan
926
Country Rank
Nagoya Institute of Technology Logo
2
University
Ranking Based On Selection:
7
Tetsuo Soga
Nagoya Institute of Technology Nagoya, Japan
Engineering & Technology / Energy Engineering
Solar cell | Nanomaterial | Photovoltaic

H-Index Metrics

  • Total
    62
  • Last 5 Years
    31
  • Last 5 Years / Total
    0.500
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* Total H Index Rankings

Rankings

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56,611
World Rank
Japan
1,015
Country Rank
Kyoto University Logo
89
University
Ranking Based On Selection:
8
Ben Mclellan
Kyoto University Kyoto, Japan
Engineering & Technology / Energy Engineering
Nexus | Sustainability | Energy | Minerals | Sustainable Desig

H-Index Metrics

  • Total
    60
  • Last 5 Years
    49
  • Last 5 Years / Total
    0.817
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* Total H Index Rankings

Rankings

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69,915
World Rank
Japan
1,267
Country Rank
Toyota Central R&D Labs., Inc Logo
2
University
Ranking Based On Selection:
9
Takeshi Morikawa
Toyota Central R&D Labs., Inc Aichi, Japan
Engineering & Technology / Energy Engineering
photocatalysis | solar energy conversion | energy storage | electrocatalysi

H-Index Metrics

  • Total
    56
  • Last 5 Years
    36
  • Last 5 Years / Total
    0.643
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* Total H Index Rankings

Rankings

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74,646
World Rank
Japan
1,393
Country Rank
Nagoya University Logo
67
University
Ranking Based On Selection:
10
Noritaka Usami
Nagoya University Nagoya, Japan
Engineering & Technology / Energy Engineering
Solar Cells | Crystal Growth | Defect Engineering | Materials and Process Informatic

H-Index Metrics

  • Total
    55
  • Last 5 Years
    25
  • Last 5 Years / Total
    0.455
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* Total H Index Rankings

Rankings

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79,808
World Rank
Japan
1,498
Country Rank
Ritsumeikan University Logo
4
University
Ranking Based On Selection:
11
Takashi Minemoto
Ritsumeikan University Kyoto, Japan
Engineering & Technology / Energy Engineering
Solar cell | Compound semiconductor | Silicon | Device simulation | PV module-system-outdoor testin

H-Index Metrics

  • Total
    53
  • Last 5 Years
    41
  • Last 5 Years / Total
    0.774
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* Total H Index Rankings

Rankings

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96,299
World Rank
Japan
1,894
Country Rank
Institute of Science Tokyo Logo
65
University
Ranking Based On Selection:
12
Yamada Akira
Institute of Science Tokyo Tokyo, Japan
Engineering & Technology / Energy Engineering
solar cells | semiconductors | Cu(InGa)Se2 | Si | Cu2ZnSnS

H-Index Metrics

  • Total
    50
  • Last 5 Years
    19
  • Last 5 Years / Total
    0.380
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* Total H Index Rankings

Rankings

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110,707
World Rank
Japan
2,194
Country Rank
Gifu University Logo
13
University
Ranking Based On Selection:
13
Hiroyuki Fujiwara
Gifu University Gifu, Japan
Engineering & Technology / Energy Engineering
Solar cells | Photovoltaics | Ellipsometry | Optical characterizatio

H-Index Metrics

  • Total
    47
  • Last 5 Years
    28
  • Last 5 Years / Total
    0.596
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* Total H Index Rankings

Rankings

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123,467
World Rank
Japan
2,467
Country Rank
Osaka Metropolitan University Logo
19
University
Ranking Based On Selection:
14
Ryohei Yokoyama
Osaka Metropolitan University Osaka, Japan
Engineering & Technology / Energy Engineering
Energy | Energy Systems | Energy Management | Cogeneration | Optimizatio

H-Index Metrics

  • Total
    45
  • Last 5 Years
    23
  • Last 5 Years / Total
    0.511
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* Total H Index Rankings

Rankings

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123,474
World Rank
Japan
2,468
Country Rank
Kyoto University Logo
175
University
Ranking Based On Selection:
15
Ishihara Keiichi N
Kyoto University Kyoto, Japan
Engineering & Technology / Energy Engineering
Energy Policy | Environment | Catalysis | Materials | Quasicrysta

H-Index Metrics

  • Total
    45
  • Last 5 Years
    23
  • Last 5 Years / Total
    0.511
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* Total H Index Rankings

Rankings

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126,895
World Rank
Japan
2,522
Country Rank
Kyoto University Logo
180
University
Ranking Based On Selection:
16
Ryota Sakamoto
Kyoto University Kyoto, Japan
Engineering & Technology / Energy Engineering
chemistr

H-Index Metrics

  • Total
    44
  • Last 5 Years
    33
  • Last 5 Years / Total
    0.750
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* Total H Index Rankings

Rankings

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127,275
World Rank
Japan
2,528
Country Rank
Kyoto University Logo
182
University
Ranking Based On Selection:
17
Tetsuaki Fujihara
Kyoto University Kyoto, Japan
Engineering & Technology / Energy Engineering
Organometallics | Catalysis | Carbon Dioxide | Coordination Chemistr

H-Index Metrics

  • Total
    44
  • Last 5 Years
    32
  • Last 5 Years / Total
    0.727
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* Total H Index Rankings

Rankings

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145,627
World Rank
Japan
2,977
Country Rank
University of Tokyo Logo
146
University
Ranking Based On Selection:
18
Satoshi Uchida
University of Tokyo Tokyo, Japan
Engineering & Technology / Energy Engineering
Solar Cell | Electrochemistry | Material Chemistr

H-Index Metrics

  • Total
    42
  • Last 5 Years
    18
  • Last 5 Years / Total
    0.429
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* Total H Index Rankings

Rankings

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150,381
World Rank
Japan
3,056
Country Rank
University of Miyazaki Logo
9
University
Ranking Based On Selection:
19
Kenji Yoshino
University of Miyazaki Miyazaki, Japan
Engineering & Technology / Energy Engineering
Solar Cell | Compound semiconductor | Transparent conducting film | Thermoelectric materia

H-Index Metrics

  • Total
    41
  • Last 5 Years
    28
  • Last 5 Years / Total
    0.683
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* Total H Index Rankings

Rankings

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181,832
World Rank
Japan
3,770
Country Rank
Okinawa Institute of Science & Technology Logo
22
University
Ranking Based On Selection:
20
Tongle Bu
Okinawa Institute of Science & Technology Okinawa, Japan
Engineering & Technology / Energy Engineering
Perovskite solar cells | Surface sciences | Crystalline materials | Energy materials and device

H-Index Metrics

  • Total
    37
  • Last 5 Years
    36
  • Last 5 Years / Total
    0.973
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* Total H Index Rankings

Rankings

flag
189,250
World Rank
Japan
3,922
Country Rank
Nagaoka University of Technology Logo
11
University
Ranking Based On Selection:
21
Tadachika Nakayama (中山 忠親)
Nagaoka University of Technology Nagaoka, Japan
Engineering & Technology / Energy Engineering
Ceramics Engineering | Nanotechnology | Power Engineering | Environmental Engineering | Energy engineerin

H-Index Metrics

  • Total
    37
  • Last 5 Years
    22
  • Last 5 Years / Total
    0.595
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* Total H Index Rankings

Rankings

flag
192,072
World Rank
Japan
4,018
Country Rank
Kyushu University Logo
125
University
Ranking Based On Selection:
22
Andrew Chapman
Kyushu University Fukuoka, Japan
Engineering & Technology / Energy Engineering
Energy | renewables | policy | equit

H-Index Metrics

  • Total
    36
  • Last 5 Years
    35
  • Last 5 Years / Total
    0.972
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* Total H Index Rankings

Rankings

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201,747
World Rank
Japan
4,213
Country Rank
Toyohashi University of Technology Logo
5
University
Ranking Based On Selection:
23
Masanobu Izaki
Toyohashi University of Technology Toyohashi, Japan
Engineering & Technology / Energy Engineering
Energy conversio

H-Index Metrics

  • Total
    36
  • Last 5 Years
    18
  • Last 5 Years / Total
    0.500
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* Total H Index Rankings

Rankings

flag
213,879
World Rank
Japan
4,527
Country Rank
Shimane University Logo
10
University
Ranking Based On Selection:
24
Satoru Okamoto
Shimane University Matsue, Japan
Engineering & Technology / Energy Engineering
energ

H-Index Metrics

  • Total
    35
  • Last 5 Years
    16
  • Last 5 Years / Total
    0.457
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* Total H Index Rankings

Rankings

flag
214,817
World Rank
Japan
4,557
Country Rank
Okinawa Institute of Science & Technology Logo
28
University
Ranking Based On Selection:
25
Yuqiang Liu (刘玉强)
Okinawa Institute of Science & Technology Okinawa, Japan
Engineering & Technology / Energy Engineering
Organic solar cell | Light-emitting diode | Wearable devic

H-Index Metrics

  • Total
    34
  • Last 5 Years
    34
  • Last 5 Years / Total
    1.000
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