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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/single-axis-solar-tracker-wind-load-design-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Solar Manufacturing EquipmentSingle-axis solar tracker wind load design patents: damping claims, stow strategy and where the field is still open
- Torsional damping dominates. 86.4% of the 22 records in scope sit in F24S (solar heat collectors) and 45.5% touch F16F (springs & vibration dampers) — the two classes converge tightly on torsional galloping mitigation.
- Filing has gone quiet since the 2021 peak. Filings peaked at 10 in 2021 and fell to 0 by 2024, a -100% swing over that three-year span; publication lag means 2025-2026 figures are still filling in.
- Three named assignees account for all 22 records. The ranked leaders capture 100.0% of records in scope between them, with the leader alone on 11 — a tightly held field rather than a fragmented one.
22
Published Records
-100%
Filing Growth 2021→2024
EP
Leading Jurisdiction
2021
Peak Filing Year
Filing growth compares 2021 (10 records) with 2024 (0) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Field Overview
A narrow, tightly-held claim space around torsional response
Single-axis solar tracker wind load design sits at the intersection of structural mechanics and utility-scale solar hardware: the question is how a long, slender rotating torque tube responds to wind-induced torsional galloping, and what mechanical or control-based fix keeps the array from oscillating itself apart. The search scope here is deliberately narrow — it isolates records that combine tracker or wind-load language with a specific mitigation vocabulary: torsional galloping, stow strategy, damping device, aeroelastic instability, row interference and structural fatigue.
That narrowness shows up in the numbers: 22 published records in total, with the technology composition concentrated almost entirely in solar heat collector and vibration damper classifications rather than spread across a broad mechanical taxonomy. It is a field defined by a handful of specific engineering solutions to one physical problem, not a sprawling one.
Filing activity and technology composition, 2017-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The Data
Filing trend and technology composition
Two views of the same 22-record dataset: how filing activity moved year over year, and which IPC subclasses the records actually sit in.
A sharp peak, then a drop-off that predates the lag window
Filings rose from 0 in 2017 to a peak of 10 in 2021, then fell to 0 by 2024 — a decline the evidence states plainly as -100% over that three-year span. Because publication trails filing by roughly 18 months, 2025 and 2026 figures are still incomplete and should not be read as confirmation that interest has ended; they simply have not caught up yet.
Solar heat collectors and vibration dampers carry the field
F24S (solar heat collectors) appears on 86.4% of the 22 records in scope, and H02S (photovoltaic generation) on 54.5% — together showing that most filings frame the tracker as a solar-generation structure first. F16F (springs & vibration dampers) at 45.5% is the clearest marker of the wind-load engineering itself; E21B (well drilling, for foundation piling) and H01L (semiconductor devices) each appear on 9.1% of records as smaller, adjacent threads.
Shares are the percentage of the 22 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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The most-cited records anchor the damping-device approach
Representative Record
Single axis solar tracker with a torsional vibration damping device
SOLTEC ENERGIAS RENOVABLES, S.L.
The solar tracker includes a pivoting assembly having solar panels fixed to a rotating shaft, a fixed structure with support elements rotationally supporting the rotating shaft, a motor-reducer assembly having an irreversible reducer connected to the rotating shaft at a motor connection point, and a torsional vibration damping device having a moving member rigidly connected to the rotating shaft at a damper connection point spaced apart from the motor connection point and a stationary member rigidly attached to the fixed structure.US20210167721A1, filed by Soltec Energias Renovables, published 2021-06-03 — the most-cited record in this dataset at 19 citations.
Most-cited records in scope
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20210167721A1 | Single axis solar tracker with a torsional vibration damping device | 19 |
| 2 | US20210234501A1 | Dual motor single axis solar tracker | 11 |
| 3 | EP3608605B1 | A single axis solar tracker with a torsional vibration damping device | 6 |
| 4 | WO2020030579A1 | A single axis solar tracker with a torsional vibration damping device | 5 |
| 5 | EP3608605A1 | A single axis solar tracker with a torsional vibration damping device | 5 |
| 6 | CN112805510A | 具有扭转振动阻尼装置的单轴线太阳能追踪器 | 3 |
| 7 | EP4142148A1 | A single axis solar tracker able to adopt a wind-favourable stow position | 2 |
Citation counts inside a searched corpus favour older records; treat this as a signal of influence on later filings, not a ranking of current commercial importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Publication numbers are shown where the record carries one (7 of 7 rows); clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for a filing decision
Three findings that shape where a new filing would land relative to existing claims.
Concentration
100.0% of 22 records
held by the ranked leaders
This is not a fragmented field
The ranked assignees account for every record in scope, with the leader alone on 11. A new entrant is not filing into open ground shared by dozens of small players — it is filing directly adjacent to a small number of well-established damping-device claim families.
Ranking covers 3 companies, the full ranked set returned for this dataset.
Filing momentum
10 → 0
peak (2021) to 2024
Activity has cooled from its 2021 peak
The -100% swing from the 2021 peak to 2024 is a real signal, not noise, since 2024 is the most recent year that can be treated as complete. Whether this reflects a mature, settled design consensus or a lull ahead of new filings is not something the citation data alone can answer.
2025-2026 figures are still filling in due to publication lag.
Technology mix
45.5% F16F
of 22 records touch vibration dampers
The damping device is the technical centre of gravity
F16F overlaps heavily with F24S and H02S rather than standing apart, which means most inventive activity frames damping as a bolt-on to the tracker structure rather than a standalone mechanical component. That framing shapes where claim boundaries currently sit.
IPC shares sum above 100% because records carry multiple classes.
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Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to single-axis solar tracker wind load design, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
A small, well-defined set of assignees
Three named assignees cover the entire dataset, with recent-year filing activity flat across all of them.
Leader
11 records
of 22 in scope
The single largest filer by a wide margin
The leading assignee holds roughly half of all records in scope, concentrated around the torsional damping device approach that also produces the dataset's most-cited filings.
0 filings in the latest year, consistent with the field-wide slowdown.
Runner-up
GameChange Solar Corp
named assignee
A structural-hardware specialist with a smaller but distinct footprint
GameChange Solar Corp appears in the ranking as a named assignee with its own filings in this space, contributing to the tightly-held concentration figure rather than competing with a long tail of small filers.
0 filings in the latest year.
Third named assignee
CEP IP Ltd
named assignee
The third holder rounding out full coverage
CEP IP Ltd is the third assignee named in a ranking that, between all three, accounts for every one of the 22 records in scope — there is no fourth or fifth filer visible in this dataset.
0 filings in the latest year.
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Suntech Renewable Energy Co., Ltd. | 0 | — |
| GAMECHANGE SOLAR CORP | 0 | — |
| CEP IP LTD | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next
Where to take this analysis
The dataset points to a narrow, concentrated field with a cooling filing trend — the next step is deciding whether that is settled ground or an opening.
Map the damping-device claim boundaries precisely
With citation activity concentrated on a handful of torsional vibration damping filings, a claim-by-claim comparison against the leader's portfolio is the fastest way to see what is actually blocked versus assumed to be blocked.
Explore claims in EurekaWatch for a post-lag rebound in filings
Because 2025-2026 data is still incomplete, re-running this landscape in twelve months will show whether the 2021-2024 decline was a real slowdown or an artefact of publication timing.
Track this space in EurekaTest the under-claimed branches for freedom to operate
Row interference modelling and array-level damping coordination show light claim density relative to the torsional-damping core — worth a targeted search before committing engineering resources there.
Run a white space search in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions on this landscape
Three named assignees account for all 22 records in this dataset's scope, and together they hold 100.0% of records — there is no long tail of smaller filers here. The leading assignee alone holds 11 records, roughly half the total, concentrated around torsional vibration damping devices. GameChange Solar Corp and CEP IP Ltd are the other two named assignees rounding out the full ranking.
Torsional galloping is a wind-induced oscillation where a tracker's long rotating torque tube twists back and forth in a self-reinforcing way, which can cause structural fatigue or failure if uncontrolled. It is the central physical problem this entire patent set addresses, most often through a mechanical damping device attached to the rotating shaft. Because the problem is so specific, the resulting claims cluster tightly around a small number of mitigation approaches rather than spreading across a broad range of designs.
Filings peaked at 10 in 2021 and fell to 0 by 2024, a -100% change the evidence states directly. That drop could reflect a settled design consensus forming around the leading damping-device patents, reduced R&D investment in this narrow niche, or simply a lull between filing waves. Publication lags filing by roughly 18 months, so the 2025-2026 figures in any current dataset are still incomplete and should not be read as continuing the decline.
US20210167721A1, filed by Soltec Energias Renovables, describes a single-axis tracker with a torsional vibration damping device: a moving member rigidly connected to the rotating shaft at a point spaced apart from the motor connection, paired with a stationary member attached to the fixed structure. It is the most-cited record in this dataset, with 19 citations, and its European and PCT counterparts (EP3608605, WO2020030579) also rank among the most-cited. Anyone designing a damping mechanism that ties a moving and stationary member to the shaft at separate connection points should review this family closely.
The IPC composition shows heavy concentration in F24S, H02S and F16F, but only light presence in E21B (foundation drilling) and H01L (semiconductor devices) at 9.1% of records each. That suggests foundation-to-torque-tube fatigue coupling and sensor-integrated tracker control are less thoroughly claimed than the core damping-device approach. Row-to-row aerodynamic interference and array-level (multi-tracker) damping coordination are also thinly represented relative to the single-tracker focus of most existing filings.
Answers are grounded in the same dataset. Derived from a Patsnap search on Single-Axis Solar Tracker Wind Load Design covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company's registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.