Microgrid Patents: Who Leads, Where the Gaps Are 2026
- 26.8% concentration at the top. The five most active filers together account for 545 of 2,037 records in scope (26.8%), leaving a long tail of single- and few-filing entrants below them.
- Filing is still accelerating, not cooling. Complete-year filings rose 57% from 2021 (112) to 2024 (176), and 2025 is the peak year so far at 201 — the years since 2024 will keep revising upward as publication catches up.
- Grid control dominates the claim space. H02J power-supply and grid-systems claims appear in 76.7% of all records, while adjacent control (G05B, 20.0%) and business-logic layers (G06Q, 17.9%) trail well behind.
Filing growth compares 2021 (112 records) with 2024 (176) — 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 2,037 records in scope (CR5), not by the ranked leaders only.
What the microgrid patent record actually shows
Microgrid patenting sits at the intersection of grid hardware and software control: claims range from frequency and voltage synchronization between islanded networks to load forecasting and dispatch logic layered on top. The dataset in scope covers 2,037 published records filed or published between 2015 and the 2026 cut-off, drawn from a search string that ties microgrid and local-energy-network terminology to grid frequency, power dispatch, voltage profile, load forecast, protection relay and load management claims. That combination captures both the electrical engineering core of microgrid operation and the data/control layer increasingly bolted onto it.
Filing activity is not evenly spread. A handful of assignees account for over a quarter of all records, while the rest of the ranked field files in small numbers — a pattern typical of a technology area where a few incumbents built early platform claims and a much larger group of entrants file narrowly around specific implementations.
Filing trends and technology composition
The figures below are drawn directly from the 2,037 records in scope: publication trend by year, and IPC subclass composition across the record set.
Filing trend, 2017-2026
Publications rose from 145 in 2017 to a peak of 201 in 2025; 2024, the most recent complete year, sits at 176 — up 57% from 112 in 2021. The 2026 figure (79 so far) and the tail of 2025 will both revise upward as publication lag of roughly 18 months continues to fill in.
IPC subclass composition
H02J (power supply and grid systems) anchors the field at 76.7% of records. G05B control systems, G06Q business/administrative data processing and H04L digital transmission each cover a meaningful but much smaller slice, reflecting a smart-grid stack layered on top of core power electronics rather than replacing it.
Shares are the percentage of the 2,037 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Microgrids Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about microgrids patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative filing
Synchronization Of Microgrids With Each Other
A method for synchronization of first and second microgrids, having respective first and second voltages and frequencies. The method includes determining a possible voltage and frequency range, determining an overlapping voltage range, determining an overlapping frequency range, selecting a third voltage within the overlapping voltage range, and selecting a third frequency within the overlapping frequency range, then controlling both microgrids to converge on that shared voltage and frequency.Filed by ABB Schweiz AG, published 2019-10-31 — illustrative of the frequency/voltage-reconciliation claims that sit at the core of multi-microgrid interconnection.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20100332373A1 | System and method for participation in energy-related markets | 1,024 |
| 2 | US20140018969A1 | Method and Apparatus for Actively Managing Electric Power Supply for an Electric Power Grid | 509 |
| 3 | US8588991B1 | System, method, and apparatus for electric power grid and network management of grid elements | 494 |
| 4 | US20110106321A1 | Dynamic distributed power grid control system | 494 |
| 5 | US20130035802A1 | Power management device and system | 316 |
| 6 | US8583520B1 | System, method, and apparatus for settlement for participation in an electric power grid | 312 |
| 7 | US20140277599A1 | Innovative Approach to Distributed Energy Resource Scheduling | 300 |
| 8 | US20120296482A1 | Methods, apparatus and systems for managing energy assets | 264 |
| 9 | US20140277788A1 | System, method, and data packets for messaging for electric power grid elements over a secure internet protoc… | 246 |
| 10 | US20120150679A1 | Energy management system for power transmission to an intelligent electricity grid from a multi-resource rene… | 246 |
Citation counts reflect influence inside the searched corpus and skew toward older filings — treat them as a signal of historical influence, not of what is being actively litigated or licensed today.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the concentration and trend data mean for filing strategy
Three patterns stand out once the ranking, trend and IPC data are read together: where claim density already blocks new entrants, where filing momentum is still building, and how citation age should be weighted.
The top of the field is dense, the rest is a long tail
545 of 2,037 records (26.8%) sit with the five most active assignees, and 753 (37.0%) with the ten most active. Below that the ranked field of 100 companies thins out quickly, which means most new filings are landing in claim space the leaders have not fully occupied rather than competing head-on for the same ground.
Filing is still climbing through the last complete year
Complete-year filings grew from 112 in 2021 to 176 in 2024, a 57% rise, with 2025 provisionally the highest year on record at 201. Read the 2025-2026 tail as understated rather than as a slowdown — publication lag of roughly 18 months means recent years always look lighter than they will end up.
Power-systems claims dominate; software layers trail
H02J covers more than three-quarters of records, confirming that grid hardware and power-flow control remain the primary claim target. G06Q (17.9%) and H04L (13.5%) show a meaningful but secondary software and communications layer building on top, rather than replacing, the electrical core.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to microgrids patent landscape, with the prior art for and against each one.
Leading assignees and where filing activity is shifting
The ranked field spans large industrial conglomerates, specialist microgrid-control vendors and power-electronics manufacturers. Recent-year momentum data shows even leading filers pulling back year over year, consistent with the reporting lag rather than a genuine drop in activity.
A single leader well ahead of the field
The top-ranked assignee holds 262 records, more than four times the fifth-place filer's 55 — a gap wide enough to suggest an early, broad platform position rather than one built purely on recent volume.
A sharp drop-off after the top ten
Tenth place holds 37 records, and the top ten combined take 37.0% of all 2,037 records. Below that threshold, filing activity fragments across the remaining ranked assignees in much smaller counts.
A small number of tight collaboration pairs
Only 10 co-assignee pairs appear in the dataset, but the strongest pair shares 80 records together — evidence of a deliberate joint-filing relationship rather than incidental overlap. Most other pairs are far weaker, in the range of a dozen or so shared records.
| Assignee | Recent year | YoY |
|---|---|---|
| CAUSAM ENERGY INC | 1 | -88% |
| Caterpillar Inc | 1 | -95% |
| Dominion Energy Technologies Inc | 0 | — |
| AstroLink International LLC | 0 | — |
| Enphase Energy Inc | 0 | — |
| General Electric Company | 0 | — |
| ABB (Schweiz) AG | 0 | — |
| OPUS ONE SOLUTIONS ENERGY CORP | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, licensing or new filing strategy.
Map claims against the H02J core
Since three-quarters of records sit in power-supply and grid-systems claims, a freedom-to-operate review should start there before checking the thinner control and software layers.
Explore the technology in EurekaWatch the top-ten filers for platform moves
With 37.0% of all records held by ten assignees, changes in their filing behaviour are the earliest signal of where the core claim space is heading next.
Track assignees in EurekaTest white-space branches for a first-filer position
Under-claimed areas like cross-microgrid frequency reconciliation and peer-to-peer dispatch logic carry lighter prior art and may support broader first claims.
Draft claims with EurekaCommon questions about microgrid patents
One assignee leads the ranked field with 262 records, well ahead of the fifth-place holder at 55. The top five assignees combined hold 545 of the 2,037 records in scope, or 26.8%, and the top ten hold 37.0%. Below the top ten the field fragments quickly into a long tail of assignees with much smaller counts, so a single company having a large share does not mean the space is closed to new entrants.
It is growing through the most recent complete year: filings rose from 112 in 2021 to 176 in 2024, a 57% increase, and 2025 is provisionally the highest year on record at 201. The apparent dip in 2025-2026 figures is an artefact of publication lag, which typically runs around 18 months, not a genuine slowdown, so those years should be read as still filling in rather than as a downturn.
The core is power supply and grid-systems engineering, classified under IPC H02J, which appears in 76.7% of the 2,037 records in scope. Around it sit smaller but significant layers of control systems (G05B, 20.0%), business and administrative data processing for dispatch and market logic (G06Q, 17.9%), and digital transmission for grid communications (H04L, 13.5%). Because a single record can carry multiple IPC codes, these shares add up to more than 100%.
Based on IPC composition, branches adjacent to the dominant H02J core carry noticeably lighter claim density, including cross-microgrid frequency and voltage reconciliation protocols, protection-relay coordination across islanded segments, EV-fleet load forecasting integration, and peer-to-peer local energy market dispatch logic. These are not literally empty, but they sit well below the density of the core power-systems claims, which is where a new first-claim position is more likely to hold up.
It is moderately concentrated at the very top and long-tailed below it. The five leading assignees hold 26.8% of all 2,037 records in scope, and the ten leading assignees hold 37.0%, but the ranking covers 100 companies in total, most of which hold far fewer records. This shape is typical of a field with a few early platform filers surrounded by a much larger group of narrower, implementation-specific entrants.
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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.