Offshore Wind Turbine for Renewable Hydrogen Patent Landscape
Offshore Wind Turbine for Renewable Hydrogen Patent Landscape in 2026
Siemens Gamesa Renewable Energy holds a commanding lead in this 426-family corpus, which expanded 191% on a three-year basis — confirming a Growth-stage field still scaling despite annual volume having eased from its 2022 peak. Activity is moderately concentrated at the top but diversifies rapidly below the leader, with marine engineering, electrolysis, and power-grid integration emerging as the defining technology axes.
Siemens Gamesa leads a moderately concentrated field with a fast-growing challenger tier
Siemens Gamesa Renewable Energy holds the top position with 98 patent families, nearly two and a half times the count of the second-ranked Innovator Energy LLC at 40 patent families — a gap that establishes clear leadership while leaving meaningful space for challengers.
The top five filers account for 41% of the combined total across the hundred largest filers, indicating moderate concentration: one dominant incumbent, one well-resourced challenger, and a fragmented mid-tier of specialized players from the energy, marine, and infrastructure sectors.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Siemens Gamesa Renewable Energy AS | 98 | |
| 2 | Innovator Energy LLC | 40 | |
| 3 | Environmental Resources Management Ltd | 13 | |
| 4 | Christensen Henrik Frans | 12 | |
| 5 | Ingeteam Power Tech | 10 | |
| 6 | Acciona Energía SA | 10 | |
| 7 | STENA POWER & LNG SOLUTIONS AS | 9 | |
| 8 | RWE Offshore Wind GmbH | 9 | |
| 9 | Single Buoy Moorings Inc | 8 | |
| 10 | Subsea 7 Ltd | 8 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | KOREA INSTITUTE OF OCEAN SCIENCE & TECHNOLOGY | 8 | |
| 12 | SIEMENS ENERGY GLOBAL GMBH & CO KG | 6 | |
| 13 | PowerChina Huadong Engineering Corporation Limited | 6 | |
| 14 | Twefda Ltd | 6 | |
| 15 | Natural Ocean Well Co | 6 | |
| 16 | Aker Solutions AS | 5 | |
| 17 | École Polytechnique Fédérale de Lausanne (EPFL) | 5 | |
| 18 | Intercontinental Energy Holdings Group Ltd | 5 | |
| 19 | Dehlsen Associates of the Pacific Ltd | 4 | |
| 20 | BJ Atlanthy SL | 4 |
Siemens Gamesa’s recent filing momentum — 3.5× its prior three-year rate — signals continued strategic commitment rather than a harvest phase, which raises the barrier for new entrants seeking to contest the core wind-to-hydrogen integration route.
The most recent 18–24 months of filing data are subject to publication lag and will understate current activity; rankings and trend readings should be interpreted with this in mind. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2022-peak growth field with wind, electrolysis, and marine engineering as co-dominant branches
Two charts together show that filings grew sharply through 2022 before easing — consistent with a field that expanded rapidly then entered a consolidation of annual volume — while the technology mix reveals that wind turbine engineering, electrolytic hydrogen production, and marine vessel design are all material branches.
Annual filing trend
Filing volume climbed from 12 in 2018 to a peak of 138 in 2022, then moderated to 91 in 2023 and 65 in 2024; 2025–2026 figures reflect publication lag and are understated. The multi-year window still shows 191% growth versus the prior period, confirming the field’s Growth-stage classification despite the annual easing.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F03D (wind motors) is the dominant branch, as expected for this topic, followed by C25B (electrolytic production of compounds) and B63B (ships and marine vessels), reflecting the offshore platform and hydrogen production integration imperative. H02J (power supply and grid systems) and F03B (hydraulic machines) also register meaningful presence, pointing to energy management and wave-energy hybrid architectures as active sub-themes.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
OFFSHORE-WINDTURBINENANORDNUNG UND VERFAHREN ZUM K…
An offshore wind turbine arrangement (1), comprising a wind turbine (2) for generating electrical energy by wind power, a hydrogen production apparatus (12) for producing hydrogen gas (13) by means of the generated electrical energy, and a cooling system (20) for cooling the hydrogen production apparatus (12), wherein the cooling system (20) includes a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Self-sufficient hydrogen generator | 80 |
| 2 | Offshore and marine vessel-based nuclear reactor c… | 77 |
| 3 | Offshore wind turbine system for the large scale p… | 55 |
| 4 | Wind-powered linear motion hydrogen production sys… | 55 |
| 5 | Marine energy hybrid | 50 |
| 6 | Production system for electric energy and hydrogen | 49 |
| 7 | Wind-powered linear motion hydrogen production sys… | 47 |
| 8 | Tidal energy system | 42 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive and technology structure means for R&D investment decisions
The combination of Growth-stage dynamics, a single dominant incumbent, and several under-served technical branches creates both entry barriers and targeted investment opportunities. The four dimensions below translate the evidence into actionable R&D framing.
Growth stage with eased annual volume from a 2022 peak
The field is classified as Growth: the recent three-year filing window sits 191% above the prior three-year window, confirming multi-year expansion. Annual volume peaked at 138 families in 2022 and has since moderated, though the most recent years remain understated by publication lag. New entrants can still establish positions, but the window for low-competition staking is narrowing.
Growth stageOne dominant incumbent, one strong challenger, fragmented mid-tier
Siemens Gamesa’s 98-family position is almost 2.5× Innovator Energy’s 40 families, and the top five account for 41% of the top-hundred filers’ combined output. Below rank five, entities hold ten or fewer families each, indicating a long tail of specialists — a structure that rewards niche differentiation over broad portfolio competition with the leader.
Moderate concentrationAcciona Energía and Ingeteam are the most active co-filers
The evidence shows Acciona Energía and Ingeteam Power Tech (and its related entity Ingeteamu Eléctrico) collaborating on five and four joint families respectively — the only documented co-filing pairs in this corpus. This pairing links a large renewable-energy developer with a power-electronics specialist, suggesting that wind-to-hydrogen system integration is attracting developer-component-maker alliances.
Developer–OEM allianceUS, EP, and CN form a near-equal primary triangle; PCT signals global ambition
The United States leads with 103 patent records, essentially matched by Europe (EPO) at 101 and China at 95, forming an unusually balanced primary-market triangle. WIPO PCT filings (58) indicate that key applicants are pursuing broad multi-jurisdiction protection. Australia at 27 records is a notable secondary market, likely reflecting that country’s large-scale green hydrogen export ambitions.
US · EP · CN triangleGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Acciona Energía SA | Ingeteam Power Tech | 5 |
| Acciona Energía SA | Ingeteam Power Technology Ltd | 4 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Siemens Gamesa dominates wind-to-electrolysis integration; Innovator Energy pursues marine-hydraulic routes
The two leading applicants pursue structurally different technical strategies, creating distinct competitive moats and suggesting that the market may bifurcate between turbine-integrated electrolysis and marine-hydraulic hydrogen production architectures.
Siemens Gamesa Renewable Energy
With 98 patent families and a filing rate 3.5× its prior three-year level, Siemens Gamesa is the clear incumbent. Its technology focus centers on wind turbine systems (F03D 9, F03D 80) integrated with electrolytic hydrogen production (C25B 1), forming the most complete wind-to-hydrogen stack in the corpus. Sustained momentum at this scale signals a deliberate platform-building strategy, not opportunistic filing.
families: 98Innovator Energy LLC
Innovator Energy holds 40 patent families with a 27% increase versus its prior three-year period, and its focus diverges sharply from Siemens Gamesa: hydraulic machines (F03B 13), power-grid energy storage (H02J 15), and waterway engineering (E02B 9) point to a marine-hydraulic and grid-storage approach to offshore hydrogen generation. This differentiated route reduces direct head-to-head collision with the leader.
families: 40| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Siemens Gamesa Renewable Energy AS | 76 | ▲ 3.5× vs prior 3-yr |
| Innovator Energy LLC | 19 | ▲ +27% |
| Environmental Resources Management Ltd | 2 | ▲ new entrant |
| Christensen Henrik Frans | 12 | ▲ new entrant |
| Stena Power & LNG Solutions AS | 9 | ▲ new entrant |
| Korea Institute of Ocean Science & Technology | 6 | ▲ new entrant |
| Subsea 7 Ltd | 8 | ▲ new entrant |
Under-served branches at the intersection of hydrogen storage, water treatment, and grid control
Several IPC branches appear at lower share relative to the dominant F03D cluster, yet have clear technical relevance to offshore wind hydrogen systems. These observations of relative sparsity may indicate early-stage R&D opportunities for teams with the right technical base.
H01M · Batteries, cells & fuel cells
H01M holds only 18 patent records — a 2% share relative to F03D — despite fuel cells being a direct end-use pathway for hydrogen produced offshore. Acciona Energía is among the few filers active here (H01M 8). The sparse coverage suggests that integrated fuel-cell buffer systems for offshore hydrogen platforms remain an under-developed area; teams with PEM fuel-cell expertise and marine-certification experience have a plausible entry path via combined electrolyzer-fuel-cell architecture patents.
Search this in Eureka →H02P · Control of motors & generators
H02P (control of motors and generators) registers only 18 patent records, despite turbine power-quality control being a recognized bottleneck in direct wind-to-electrolyzer coupling. The branch is present in some filings but remains sparse relative to its technical importance. Teams specializing in variable-speed drive control, power electronics, or digital-twin turbine management have a technically grounded entry path that avoids direct competition with the dominant F03D-C25B integration stack.
Search this in Eureka →How leading applicants differ across wind, electrolysis, marine, and grid technology routes
Strength of each leader across the main technology routes.
| Player | F03D 9 · Wind motors (wind turbines) | C25B 1 · Electrolytic production of compounds | B63B 35 · Ships & marine vessels | F03B 13 · Hydraulic machines & engines | C25B 9 · Electrolytic production of compounds |
|---|---|---|---|---|---|
| Siemens Gamesa Renewable Energy AS | Strong · 87 | Moderate · 30 | Absent | Absent | Emerging · 14 |
| Innovator Energy LLC | Absent | Absent | Absent | Strong · 32 | Absent |
| PowerChina Huadong Engineering Corporation Limited | Strong · 6 | Strong · 6 | Absent | Absent | Strong · 6 |
| Environmental Resources Management Ltd | Strong · 13 | Absent | Absent | Absent | Emerging · 2 |
| Intercontinental Energy Holdings Group Ltd | Strong · 7 | Strong · 7 | Absent | Absent | Absent |
| Stena Power & LNG Solutions AS | Absent | Strong · 6 | Strong · 8 | Absent | Absent |
| Single Buoy Moorings Inc | Absent | Strong · 6 | Strong · 8 | Absent | Absent |
Frequently asked questions
The corpus covers 426 patent families in scope globally, reflecting activity across wind turbine integration, offshore electrolysis, marine vessel platforms, and hydrogen grid delivery.
Siemens Gamesa Renewable Energy holds the top position with 98 patent families, nearly 2.5× the count of the second-ranked Innovator Energy LLC at 40 patent families. Siemens Gamesa’s recent filing rate is 3.5× its prior three-year level, signaling continued strategic investment.
The field is classified as Growth. The recent three-year filing window is 191% above the prior three-year window. Annual volume peaked at 138 families in 2022 and has since eased, though the most recent years are further understated by publication lag, so the true current rate is higher than raw figures suggest.
The United States (103 patent records), Europe via the EPO (101), and China (95) form a near-equal primary triangle. WIPO PCT filings (58) indicate that leading applicants are seeking broad multi-jurisdiction coverage, and Australia (27) stands out as a notable secondary market.
F03D (wind motors and turbines) is the dominant branch, followed by C25B (electrolytic production of compounds), B63B (ships and marine vessels), F03B (hydraulic machines and engines), and H02J (power supply and grid systems). This mix reflects the integrated offshore platform, electrolysis, and grid delivery architecture typical of leading designs.
Yes. Acciona Energía and Ingeteam Power Tech are the most active co-filers, with five jointly filed families, plus four additional co-filings between Acciona Energía and Ingeteamu Eléctrico (a related Ingeteam entity). This developer–power-electronics-specialist pairing is the only documented co-filing relationship in the evidence.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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