Science Explorer Back to mapMap
Discussion
Topic · Energy Engineering and Power Technology

Hybrid Renewable Energy Systems

Hybrid Renewable Energy Systems is a research topic within Energy Engineering and Power Technology. Science Explorer counts 35k research works in it since 1950. 10.0% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the advancements, challenges, and potential of hydrogen energy systems and technologies. It covers various aspects such as renewable energy integration, electrolysis, power-to-gas technology, sustainability, energy storage, techno-economic analysis, fuel cells, and environmental impact.

  • Hydrogen
  • Renewable Energy
  • Electrolysis
  • Power-to-Gas
  • Sustainability
  • Energy Storage
  • Techno-Economic Analysis
  • Renewable Resources
  • Fuel Cell
  • Environmental Impact
Research works
35k
fractional, since 1950
In the world top 10%
3.5k
per year above
Top-10% rate
10.0%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+79%
the tick is no change
Largest producer
China
37% of the 10 largest, 2022-now
Hybrid Renewable Energy Systems

Which countries lead Hybrid Renewable Energy Systems research?

By volume, China and India publish the most (3.5k and 1.4k works in 2022-now).

By volume, 2022-now

  1. 1 China 3.5k works
  2. 2 India 1.4k works
  3. 3 United States 1.1k works
  4. 4 Germany 683 works
  5. 5 United Kingdom 522 works
  6. 6 Italy 476 works
  7. 7 Türkiye 474 works
  8. 8 Indonesia 474 works
  9. 9 Iran 384 works
  10. 10 South Korea 384 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 37.2%India: 14.7%United States: 11.6%Germany: 7.3%6 others listed: 29.1%37%largest
China3,462 · 37.2%India1,372 · 14.7%United States1,077 · 11.6%Germany683 · 7.3%6 others listed2,713 · 29.1%

Shares of the rows listed above, not of the whole node.

Which institutions lead Hybrid Renewable Energy Systems research?

By volume in 2022-now, North China Electric Power University publishes the most Hybrid Renewable Energy Systems research, followed by Helmholtz Association of German Research Centres and Chinese Academy of Sciences.

By volume, 2022-now

  1. 1 North China Electric Power UniversityChina 178 works
  2. 2 Helmholtz Association of German Research CentresGermany 122 works
  3. 3 Chinese Academy of SciencesChina 119 works
  4. 4 Xi'an Jiaotong UniversityChina 110 works
  5. 5 Centre National de la Recherche ScientifiqueFrance 100 works
  6. 6 Tsinghua UniversityChina 85 works
  7. 7 Zhejiang UniversityChina 74 works
  8. 8 State Grid Corporation of China (China)China 66 works
  9. 9 King Fahd University of Petroleum and MineralsSaudi Arabia 66 works
  10. 10 Shanghai Jiao Tong UniversityChina 63 works

Who are the leading researchers in Hybrid Renewable Energy Systems?

The most-cited researchers publishing on Hybrid Renewable Energy Systems include Zhong Lin Wang, Michaël Grätzel and Yi Ping Cui.

  1. 1 Zhong Lin Wang United States 491k citations
  2. 2 Michaël Grätzel Switzerland 458k citations
  3. 3 Yi Ping Cui United States 261k citations
  4. 4 Kai You Wang China 224k citations
  5. 5 Lei Jiang China 214k citations
  6. 6 Jiaguo Yu China 207k citations
  7. 7 Frede Blaabjerg Denmark 203k citations
  8. 8 Michael D Brauer Canada 187k citations
  9. 9 Seeram Ramakrishna Singapore 186k citations
  10. 10 Edward Hartley Sargent Canada 185k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Hybrid Renewable Energy Systems?

The most cited paper in Hybrid Renewable Energy Systems is "Opportunities and challenges for a sustainable energy future" (Steven Chu, Arun K. Majumdar, 2012), with 12,573 citations. Next come "Hydrogen-storage materials for mobile applications" (8,827) and "Powering the planet: Chemical challenges in solar energy utilization" (8,344).

Most cited papers
#PaperReleasedCitations
1 Opportunities and challenges for a sustainable energy future Steven Chu, Arun K. Majumdar · Nature Aug 2012 12,573
2 Hydrogen-storage materials for mobile applications L. Schlapbach, Andreas Züttel · Nature Open access Nov 2001 8,827
3 Powering the planet: Chemical challenges in solar energy utilization Nathan S. Lewis, Daniel G. Nocera · Proceedings of the National Academy of Sciences Open access 17 Oct 2006 8,344
4 Sustainable Hydrogen Production John A. A. Turner · Science 13 Aug 2004 6,560
5 A comprehensive review on PEM water electrolysis Marcelo Carmo, David Fritz, Jürgen Mergel et al. · International Journal of Hydrogen Energy 14 Mar 2013 5,481
All 100 most cited papers, with filters and sorting

Where is Hybrid Renewable Energy Systems research done?

The largest centres of Hybrid Renewable Energy Systems research in 2022-now are Beijing (China), Shanghai (China), Tehran (Iran) and Xi'an (China). Among places with at least 20 works in it, it is an unusually large share of all research in Oshawa, Lappeenranta and Golden.

Largest cities, 2022-now

  1. 1 BeijingChina 757 works
  2. 2 ShanghaiChina 242 works
  3. 3 TehranIran 184 works
  4. 4 Xi'anChina 182 works
  5. 5 NanjingChina 172 works
  6. 6 WuhanChina 166 works
  7. 7 SeoulSouth Korea 147 works
  8. 8 HangzhouChina 128 works
  9. 9 TianjinChina 119 works
  10. 10 IstanbulTürkiye 114 works

Where it is the local speciality

  1. OshawaCA · 60.8 works38×
  2. LappeenrantaFI · 33.6 works19×
  3. GoldenUS · 51.3 works13×
  4. JülichDE · 49.7 works13×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Hybrid Renewable Energy Systems than the world average.

See Hybrid Renewable Energy Systems on the map

Where is the best place to study Hybrid Renewable Energy Systems?

Among universities, judged by research, King Fahd University of Petroleum and Minerals, Lappeenranta-Lahti University of Technology and Université du Québec à Trois-Rivières score highest, combining citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 19.69%fractional works in this field (log) →share of work in the world top 10% →Université du Québec…Lappeenranta-Lahti U…King Fahd University…North China Electric…
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1King Fahd University of Petroleum and MineralsSaudi Arabia 69.319.4%14.0×66 +254.3%
2Lappeenranta-Lahti University of TechnologyFinland 68.921.6%24.5×34 +41.4%
3Université du Québec à Trois-RivièresCanada 67.742.3%10.4×13 +142.2%
4North China Electric Power UniversityChina 67.513.9%19.5×178 +132.8%
5University of Technology SydneyAustralia 63.224.2%3.7×23 +138.6%
6University of TehranIran 63.114.8%7.0×55 +65.6%
7Aalborg UniversityDenmark 62.518.0%6.9×53 +2.3%
8Xi'an Jiaotong UniversityChina 60.512.6%4.6×110 +197.2%
9University of SharjahUnited Arab Emirates 59.816.3%8.3×30 +48.4%
10Hong Kong Polytechnic UniversityChina 59.813.8%2.3×27 +169.1%

Universities only. The score blends citation excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Hybrid Renewable Energy Systems, country by country

Is Hybrid Renewable Energy Systems research growing?

Output in 2022-2025 was 79% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Hybrid Renewable Energy Systems.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Hybrid Renewable Energy Systems as a percentage of every work published that year, 0.064% in 2024.

still counting0.050%0.10%Hybrid Renewable Energy Systems0.076% in 202519801990200020102020

Fractional works of Hybrid Renewable Energy Systems over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Hybrid Renewable Energy Systems9.9% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

Discussion

Ask a question or share a note about Hybrid Renewable Energy Systems. Keep it to the research: no personal attacks, advertising or links. Any reader can report a post, which collapses it for everyone until it is opened.