Industrial Load Curtailment Patents: Leaders & Filing Trends 2026
Filing growth compares 2021 (1 records) with 2024 (4) — 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. Top-5 share is the combined record count of the five largest assignees divided by all 36 records in scope (CR5), not by the ranked leaders only.
What this patent set covers
Industrial load curtailment sits at the intersection of demand response programs and grid-control engineering: patents in this set claim methods for reducing or shifting industrial electricity load in response to grid signals, price triggers, or renewable-generation curtailment events. The search returns 36 published records filed between 2015 and the current data cut-off, spanning grid-side control logic, turbine curtailment coordination, and the digital and communications layers that schedule or settle curtailment events.
Most of the claim activity sits at the control layer rather than the commercial layer — grid-system control (H02J) and wind-turbine curtailment (F03D) together cover well over half the record base, while data-processing and communications classes remain comparatively thin. That split matters for anyone assessing where a new filing would face the densest prior art versus where the claim space is still forming.
Filing trends and technology composition
The dataset covers 36 published records filed against industrial load curtailment search terms between 2015 and the 2026-07-31 cut-off. Because publication lags filing by roughly 18 months, the most recent years understate actual filing activity.
A three-year filing acceleration, not yet a plateau
Filings moved from 1 in 2021 to 4 in 2024, a +300% increase over that span, with 2025 reaching 10 as the peak year so far. 2025 and 2026 figures are still filling in under publication lag and should not be read as a slowdown.
Grid control logic dominates the class mix
H02J (power supply and grid systems) appears in 44.4% of the 36 records, well ahead of F03D wind-turbine curtailment at 22.2%. Control and regulation classes (G05B, G05F) and data-processing classes (G06F, H04L, H04W) each sit in the 11-14% range, indicating the technology is claimed mostly at the control layer rather than the commercial or communications layer.
Shares are the percentage of the 36 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Demand Response & Flexible Loads: Industrial Load Curtailment Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about demand response & flexible loads: industrial load curtailment patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe record setting the boundaries of this field
Latency-based micro demand response with bidirectional curtailment margins (US20160187909A1)
The patent describes splitting devices enrolled in a demand response event into On-to-Off and Off-to-On sets, then forming latency groups and transition groups based on dynamic upper and lower curtailment margins defined for the overall event. The mechanism is built specifically around bidirectional curtailment, distinguishing it from simpler one-directional load-shedding schemes.Filed by Fujitsu, priority date 2016-06-30.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US7698233B1 | System and method for determining expected unserved energy to quantify generation reliability risks | 123 |
| 2 | CN101269798A | 一种废硫酸中有机资源回收与废硫酸精制的方法 | 16 |
| 3 | CN110880772A | 一种基于工业园区负荷聚合的售电公司响应电网控制方法 | 15 |
| 4 | US20240117791A1 | A Turbine Provided with Data for Parameter Improvement | 9 |
| 5 | CN117439130A | 百兆瓦级工业制硅园区源网荷储一体化日前协调控制优化策略、系统、设备及介质 | 4 |
| 6 | US20160187909A1 | Latency-based micro demand response with bidirectional curtailment margins | 3 |
| 7 | US2771558A | Electric power supply system and method of controlling same | 3 |
| 8 | US20250350117A1 | Twin-configurable architecture renewable power plant for high-capacity factor servicing of controllable loads | 2 |
| 9 | US12244147B1 | Twin-configurable architecture renewable power plant for high capacity factor servicing of controllable loads | 2 |
| 10 | WO2025010359A2 | Flexible operation and reciprocating near-isothermal gas compressor/expander for wind energy storage | 2 |
Ranked by citation count within the 36 records returned by the search; older records accumulate more citations simply by having been public longer, so treat this as a signal of influence rather than current 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. Each row carries its publication number; clicking a row searches Eureka by that number.
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Four figures from the dataset matter more than the rest when deciding where to file next or who to watch.
The top of the field is settled, the rest is open
The top 5 assignees combined hold 63.9% of all 36 records in scope, and the top 10 hold 77.8%. That leaves a real tail of entrants with one or two filings each — room for a focused new filer, but only outside the densest control-logic classes.
A genuine acceleration, not a data artefact
Filings rose from 1 in 2021 to 4 in 2024, a +300% increase over three years, and 2025 reached 10, the highest year recorded. Because publication lags filing by about 18 months, treat 2024 as the last complete year and expect 2025-2026 to revise upward.
Grid-control logic is the most crowded class
H02J (power supply and grid systems) appears in 44.4% of the 36 records, nearly double the next largest class, F03D wind-turbine curtailment at 22.2%. New filers entering H02J are filing into the densest prior art in the dataset.
Filing activity is US-led but internationally spread
The United States accounts for 12 filings as receiving office, with China, Australia, India, and WIPO's PCT route each contributing multiple filings. That spread points to a technology being pursued for both domestic grid deployment and cross-border licensing.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to demand response & flexible loads: industrial load curtailment patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| TBEA Co., Ltd. | TBEA Xinjiang New Energy Co., Ltd. | 1 |
| TBEA Co., Ltd. | Xinjiang Tianchi Energy Co., Ltd. | 1 |
| TBEA Co., Ltd. | Zhongneng Zhixin Technology Industry Development Co., Ltd. | 1 |
| TBEA Xinjiang New Energy Co., Ltd. | Xinjiang Tianchi Energy Co., Ltd. | 1 |
| TBEA Xinjiang New Energy Co., Ltd. | Zhongneng Zhixin Technology Industry Development Co., Ltd. | 1 |
| Jiangsu Nanda Environmental Protection Technology Co., Ltd. | Nanjing University | 1 |
| Wuhan University | State Grid Hubei Electric Power Co., Ltd. Luotian County Power Supply Company | 1 |
| Wuhan University | State Grid Corporation of China | 1 |
The dataset records 8 co-assignee pairs, the strongest involving a single industrial group filing jointly across its own subsidiaries — a pattern more typical of internal technology transfer than open collaboration between unrelated companies.
Where to take this analysis
The figures here identify the concentration and the gaps; the next step is verifying how they apply to a specific filing or design-around decision.
Check freedom-to-operate against the leading assignees
With the top 5 assignees holding 63.9% of the 36 records in scope, a freedom-to-operate review should start with their specific claim language in H02J and F03D before assuming open space.
Run a claim comparison in EurekaTrack the 2025-2026 filings as they complete
2025 already shows 10 filings, the peak recorded so far, but publication lag means the true count for 2025-2026 will keep rising for months.
Set a filing alert in EurekaExplore the under-claimed commerce and communications layers
G06Q, H04W and G06F sit well below the control-logic classes in record share, suggesting settlement, wireless coordination and general data-processing claims remain comparatively open.
Explore white space in EurekaCommon questions on industrial load curtailment patents
Within the ranked assignees in this dataset, the leading company holds 8 of the 36 records in scope, and the top 5 assignees combined account for 63.9% of all records. That is a concentrated but not monopolised field: the top 10 hold 77.8%, leaving a meaningful tail of single- or double-filing entrants. Filing counts alone don't indicate technical superiority — they show where claim space has been staked, not which approach performs best operationally.
The dominant IPC class is H02J, power supply and grid systems, present in 44.4% of the 36 records, followed by F03D (wind motors/turbines) at 22.2%. Control and regulation logic (G05B, G05F) and digital processing or communications layers (G06F, H04L, H04W) each appear in roughly 11-14% of records. Because a single record can carry multiple IPC classes, these shares add up to more than 100%, which reflects genuine overlap between grid control and turbine curtailment filings rather than a data error.
Yes — filings grew from 1 in 2021 to 4 in 2024, a +300% increase over that three-year span, and 2025 recorded 10 filings, the peak year in the dataset so far. Because publication typically lags filing by about 18 months, the 2025 and 2026 figures are still incomplete and will likely rise as more records publish. Treat 2024 as the most recent year that can be read as a complete data point.
The United States leads with 12 filings recorded as receiving office, followed by China at 5, and Australia, India, and WIPO's PCT route each at 4, with Europe (EPO) at 3. This spread suggests the technology is being pursued through both national filing strategies and international PCT routes rather than concentrated in a single jurisdiction, which is typical for grid-control technology with export potential.
US20160187909A1, filed by Fujitsu on 2016-06-30, claims a method for splitting demand-response devices into On-to-Off and Off-to-On sets and forming latency and transition groups based on dynamic curtailment margins. It blocks systems that use this specific bidirectional, margin-based latency grouping mechanism, but it does not cover curtailment control generally or one-directional load-shedding schemes. Anyone building around it needs to look closely at whether their grouping logic depends on the same margin-bound partitioning step, since that is the core of what is claimed.
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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.