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Company · Princeton · United States

Ocean Power Technologies (United States)

In research, Ocean Power Technologies (United States) stands highest in Physical Sciences (#3,256 of 17,446 worldwide), Engineering (#2,772 of 9,532 worldwide) and Electrical and Electronic Engineering (#1,164 of 3,725 worldwide), over all time.

oceanpowertechnologies.comROR OpenAlex
World rank, all time
#12,906
of 34,923
Rank in United States
#2,672
of 7,310
Research works
413
▲ 16% vs 2018-21
Citations
12k
28.8 per fractional work
Top-10% rate
11.4%
all institutions 10.0%
vs its own fields
1.24×
1.00× is exactly expected
Open access
7%
world 40%
International
9%
world 18%
Ocean Power Technologies (United States)

What is Ocean Power Technologies (United States) known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Physical SciencesDomain #3,256 of 17,446 17.3%386
EngineeringField #2,772 of 9,532 17.2%310
Electrical and Electronic EngineeringSubfield #1,164 of 3,725 19.3%158

Each strip is that field's whole ranked pool, with the notch where Ocean Power Technologies (United States) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Ocean Power Technologies (United States) work in?

In all years, 93% of research at Ocean Power Technologies (United States) is in Physical Sciences, 5% in Social Sciences. Its largest fields are Engineering (75%), Physics and Astronomy (5%), Materials Science (4%). It does 2.3× the world's share of Physical Sciences.

Physical Sciences: 386 fractional works · 93.5% of its workEngineering: 310 fractional works · 74.9% of its workElectrical and Electronic Engineering: 158 fractional works · 38.1% of its workControl and Systems Engineering: 52 fractional works · 12.7% of its workOcean Engineering: 22 fractional works · 5.2% of its workSafety, Risk, Reliability and Quality: 21 fractional works · 5.1% of its workMechanical Engineering: 12 fractional works · 2.9% of its workAerospace Engineering: 8 fractional works · 2.0% of its workComputational Mechanics: 6 fractional works · 1.5% of its workCivil and Structural Engineering: 6 fractional works · 1.5% of its workAutomotive Engineering: 6 fractional works · 1.5% of its workBiomedical Engineering: 5 fractional works · 1.3% of its workIndustrial and Manufacturing Engineering: 4 fractional works · 1.0% of its workMechanics of Materials: 3 fractional works · 0.8% of its workMedia Technology: 3 fractional works · 0.6% of its workBuilding and Construction: 2 fractional works · 0.5% of its workPhysics and Astronomy: 23 fractional works · 5.5% of its workAstronomy and Astrophysics: 17 fractional works · 4.2% of its workAtomic and Molecular Physics, and Optics: 3 fractional works · 0.7% of its workCondensed Matter Physics: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workMaterials Science: 15 fractional works · 3.5% of its workMaterials Chemistry: 11 fractional works · 2.6% of its workElectronic, Optical and Magnetic Materials: 3 fractional works · 0.7% of its workSmaller subfields together: 1 fractional works · 0.2% of its workEarth and Planetary Sciences: 12 fractional works · 2.8% of its workOceanography: 5 fractional works · 1.1% of its workAtmospheric Science: 3 fractional works · 0.8% of its workEarth-Surface Processes: 2 fractional works · 0.5% of its workGeophysics: 2 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workComputer Science: 8 fractional works · 2.0% of its workComputer Networks and Communications: 3 fractional works · 0.7% of its workArtificial Intelligence: 2 fractional works · 0.4% of its workHardware and Architecture: 2 fractional works · 0.4% of its workSmaller subfields together: 2 fractional works · 0.5% of its workEnergy: 6 fractional works · 1.6% of its workRenewable Energy, Sustainability and the Environment: 3 fractional works · 0.8% of its workEnergy Engineering and Power Technology: 3 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnvironmental Science: 6 fractional works · 1.4% of its workGlobal and Planetary Change: 3 fractional works · 0.8% of its workEcology: 1 fractional works · 0.3% of its workManagement, Monitoring, Policy and Law: 1 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workChemical Engineering: 3 fractional works · 0.7% of its workFluid Flow and Transfer Processes: 3 fractional works · 0.7% of its workMathematics: 2 fractional works · 0.6% of its workDiscrete Mathematics and Combinatorics: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workChemistry: 2 fractional works · 0.5% of its workOrganic Chemistry: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.3% of its workSocial Sciences: 20 fractional works · 4.9% of its workSocial Sciences: 7 fractional works · 1.6% of its workSociology and Political Science: 3 fractional works · 0.7% of its workPolitical Science and International Relations: 2 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.3% of its workBusiness, Management and Accounting: 5 fractional works · 1.2% of its workManagement Information Systems: 3 fractional works · 0.7% of its workStrategy and Management: 2 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.0% of its workDecision Sciences: 4 fractional works · 1.0% of its workStatistics, Probability and Uncertainty: 2 fractional works · 0.6% of its workManagement Science and Operations Research: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEconomics, Econometrics and Finance: 3 fractional works · 0.8% of its workFinance: 2 fractional works · 0.5% of its workEconomics and Econometrics: 1 fractional works · 0.3% of its workPsychology: 1 fractional works · 0.2% of its workClinical Psychology: 1 fractional works · 0.2% of its workArts and Humanities: 0 fractional works · 0.1% of its workLife Sciences: 4 fractional works · 0.9% of its workBiochemistry, Genetics and Molecular Biology: 3 fractional works · 0.6% of its workMolecular Biology: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workAgricultural and Biological Sciences: 1 fractional works · 0.2% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.1% of its workHealth Sciences: 3 fractional works · 0.7% of its workMedicine: 2 fractional works · 0.5% of its workHealth Professions: 1 fractional works · 0.2% of its workVeterinary: 0 fractional works · 0.0% of its workALL ITS WORKOcean PowerTechnologies…413fractional works, all years
Life Sciences1%Physical Sciences93%Health Sciences1%Social Sciences5%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in all years. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 22 fields, with their numbers
    1. Engineering31074.9%
    2. Physics and Astronomy235.5%
    3. Materials Science153.5%
    4. Earth and Planetary Sciences122.8%
    5. Computer Science82.0%
    6. Energy61.6%
    7. Environmental Science61.4%
    8. Chemical Engineering30.7%
    9. Mathematics20.6%
    10. Chemistry20.5%
    1. Social Sciences71.6%
    2. Business, Management and Accounting51.2%
    3. Decision Sciences41.0%
    4. Economics, Econometrics and Finance30.8%
    5. Psychology10.2%
    6. Arts and Humanities00.1%
    1. Biochemistry, Genetics and Molecular Biology30.6%
    2. Agricultural and Biological Sciences10.2%
    3. Pharmacology, Toxicology and Pharmaceutics10.1%
    1. Medicine20.5%
    2. Health Professions10.2%
    3. Veterinary00.0%
All of science, and how each field's share has moved since 1950: the Science domain explorer

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.19× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.99× its world share, 1 worksBiochemistry, Geneti…Pharmacology, Toxicology and Pharmaceutics: 2.54× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.57× its world share, 0 worksChemistryComputer Science: 0.83× its world share, 1 worksComputer ScienceEarth and Planetary Sciences: 14.23× its world share, 4 worksEarth and Planetary …Energy: 0.39× its world share, 0 worksEnergyEngineering: 1.81× its world share, 5 worksEngineeringEnvironmental Science: 1.16× its world share, 1 worksEnvironmental ScienceMaterials Science: 0.23× its world share, 0 worksMaterials SciencePhysics and Astronomy: 0.20× its world share, 0 worksPhysics and AstronomyMedicine: 0.10× its world share, 0 worksMedicineDecision Sciences: 0.93× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.42× its world share, 0 worksEconomics, Econometr…Social Sciences: 1.98× its world share, 5 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 14.2×. Every wedge is a field page.

All 15 fields, with their numbers
  1. Earth and Planetary Sciences14.23×4 works
  2. Pharmacology, Toxicology and Pharmaceutics2.54×0 works
  3. Social Sciences1.98×5 works
  4. Engineering1.81×5 works
  5. Environmental Science1.16×1 works
  6. Biochemistry, Genetics and Molecular Biology0.99×1 works
  7. Decision Sciences0.93×0 works
  8. Computer Science0.83×1 works
  9. Chemistry0.57×0 works
  10. Economics, Econometrics and Finance0.42×0 works
  11. Energy0.39×0 works
  12. Materials Science0.23×0 works
  13. Physics and Astronomy0.20×0 works
  14. Agricultural and Biological Sciences0.19×0 works
  15. Medicine0.10×0 works

Who are the top researchers at Ocean Power Technologies (United States)?

Ranked on the quality score, H.M. Merrill, Dale A. Douglass and L. N. Hannett lead among researchers whose main affiliation is Ocean Power Technologies (United States).

  1. 1 H.M. Merrill United States · #818,393 worldwide 1.6k citations · 65 works
  2. 2 Dale A. Douglass United States · #826,323 worldwide 1.3k citations · 44 works
  3. 3 L. N. Hannett United States · #874,889 worldwide 1.2k citations · 40 works
  4. 4 John M. Undrill United States · #1,027,307 worldwide 2.3k citations · 73 works
  5. 5 F. P. de Mello United States · #1,140,566 worldwide 1.1k citations · 36 works
  6. 6 James R. Stewart United States · #1,185,559 worldwide 1.2k citations · 40 works
  7. 7 James R. Stewart United States · #1,262,324 worldwide 1.8k citations · 90 works
  8. 8 P.P. Barker United States · #1,291,978 worldwide 1.8k citations · 24 works
  9. 9 James W. Feltes United States · #1,420,021 worldwide 1.2k citations · 48 works
  10. 10 Rana Mukerji United States · #1,744,052 worldwide 3.5k citations · 15 works
All ranked researchers at Ocean Power Technologies (United States)

What are the most cited papers from Ocean Power Technologies (United States)?

The most cited paper from Ocean Power Technologies (United States) is "Determining the impact of distributed generation on power systems. I. Radial distribution systems" (P.P. Barker, Robert W. de Mello, 2002), with 1,213 citations. Next come "Understanding automatic generation control" (709) and "The Energy Harvesting Eel: a small subsurface ocean/river power generator" (654).

Most cited papers
#PaperReleasedCitations
1 Determining the impact of distributed generation on power systems. I. Radial distribution systems P.P. Barker, Robert W. de Mello Conference paper 7 Nov 2002 1,213
2 Understanding automatic generation control Nasser Jaleeli, Louis S. VanSlyck, D.N. Ewart et al. · IEEE Transactions on Power Systems 1992 709
3 The Energy Harvesting Eel: a small subsurface ocean/river power generator George W. Taylor, James R. Burns, S.A. Kammann et al. · IEEE Journal of Oceanic Engineering 2001 654
4 Automatic Contingency Selection G.C. Ejebe, B.F. Wollenberg · IEEE Transactions on Power Apparatus and Systems 1979 480
5 Update of harmonic standard IEEE-519: IEEE recommended practices and requirements for harmonic control in electric power systems C.K. Duffey, Ray P. Stratford · IEEE Transactions on Industry Applications 1989 365
All 58 most cited papers, with filters and sorting

Which keywords describe research at Ocean Power Technologies (United States)?

By fractional works in all years, weighted toward what it does more of than the world: Renewable Energy, Control Systems, Power System, Power Electronics, Smart Grid, Distributed Generation, Energy Storage and Wind Power.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in all years in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Renewable Energy53▲ 13×20 topics
  2. Control Systems31▲ 28×7 topics
  3. Power System30▲ 63×4 topics
  4. Power Electronics29▲ 26×8 topics
  5. Smart Grid29▲ 24×8 topics
  6. Distributed Generation27▲ 104×3 topics
  7. Climate Change25▲ 2.3×18 topics
  8. Energy Storage25▲ 15×8 topics
  9. Fault Detection24▲ 48×3 topics
  10. Wind Power24▲ 78×3 topics
  11. Control Strategies24▲ 45×5 topics
  12. Smart Grid Applications22▲ 58×2 topics
  13. Phasor Measurement Units20▲ 182×1 topic
  14. Power System Stability20▲ 182×1 topic
  15. Optimization20▲ 8.7×11 topics
  16. Reliability Evaluation19▲ 89×2 topics
  17. Maintenance Scheduling19▲ 299×1 topic
  18. Probabilistic Assessment19▲ 299×1 topic
  19. Wavelet Transform19▲ 23×3 topics
  20. Voltage Control18▲ 81×2 topics
  21. Electrical Systems18▲ 108×2 topics
  22. Simulation18▲ 13×3 topics
  23. HVDC Transmission18▲ 96×2 topics
  24. Smart Grids18▲ 124×3 topics
  25. Thermal Analysis17▲ 28×3 topics
  26. Distribution17▲ 147×1 topic
  27. Lightning17▲ 189×1 topic
  28. Renewable Energy Integration16▲ 15×6 topics
  29. Energy Efficiency15▲ 4.7×19 topics
  30. Detection15▲ 13×3 topics
  31. Wind Power Integration15▲ 94×2 topics
  32. Microgrid14▲ 187×1 topic
  33. Protection14▲ 187×1 topic
  34. Photovoltaic Systems13▲ 49×2 topics
  35. Real-Time Monitoring13▲ 30×2 topics
  36. Arc Fault13▲ 250×1 topic
  37. Localization13▲ 30×1 topic
  38. Dynamic Line Rating12▲ 208×1 topic
  39. Transmission Lines12▲ 208×1 topic
  40. Power Systems11▲ 33×2 topics

Which research topics does Ocean Power Technologies (United States) publish most on?

By volume in 2022-now: Political Conflict and Governance, Corruption and Economic Development, Wave and Wind Energy Systems and Offshore Engineering and Technologies.

Political Conflict and G…1Political Conflict and Governance: 1 fractional worksCorruption and Economic …1Corruption and Economic Development: 1 fractional worksWave and Wind Energy Sys…1Wave and Wind Energy Systems: 1 fractional worksOffshore Engineering and…1Offshore Engineering and Technologies: 1 fractional worksOcean Waves and Remote Sensing: 1 fractional worksOceanographic and Atmospheric Processes: 1 fractional worksElectoral Systems and Po…1Electoral Systems and Political Participation: 1 fractional worksGender Politics and Representation: 1 fractional worksMeteorological Phenomena and Simulations: 1 fractional worksCoastal and Marine Dynam…1Coastal and Marine Dynamics: 1 fractional works
Sociology and Political ScienceOcean EngineeringOceanographyPolitical Science and International Relations3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Political Conflict and Governance Sociology and Political Science 1 works
  2. 2 Corruption and Economic Development Sociology and Political Science 1 works
  3. 3 Wave and Wind Energy Systems Ocean Engineering 1 works
  4. 4 Offshore Engineering and Technologies Ocean Engineering 1 works
  5. 5 Ocean Waves and Remote Sensing Oceanography 1 works
  6. 6 Oceanographic and Atmospheric Processes Oceanography 1 works
  7. 7 Electoral Systems and Political Participation Political Science and International Relations 1 works
  8. 8 Gender Politics and Representation Gender Studies 1 works
  9. 9 Meteorological Phenomena and Simulations Atmospheric Science 1 works
  10. 10 Coastal and Marine Dynamics Earth-Surface Processes 1 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available6.9%not open93.1%

World: 40% of research is openly available.

with international co-authors8.7%domestic only91.3%

World: 18% is written across borders.

How has Ocean Power Technologies (United States)'s research output changed?

Output in 2022-2025 was 16% higher than in 2018-2021.

still counting1990200020102020
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 Ocean Power Technologies (United States) as a percentage of every work published that year, 0.000023% in 2024.

still counting0.0025%0.0050%0.0075%Ocean Power Technologies (United States)0.000062% in 202519801990200020102020

Fractional works of Ocean Power Technologies (United States) over all fractional works that year. How the balance of science has shifted.

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