Microgrid Control for Renewable Integration Patent Landscape
Microgrid Control for Renewable Integration Patent Landscape in 2026
The microgrid control for renewable integration field is in active growth, with 862 patent families on record and the United States as the dominant filing jurisdiction. Dynapower Company holds the largest individual position, though the top five filers account for less than a quarter of the hundred largest filers’ combined volume, indicating a moderately fragmented competitive field.
Dynapower leads a moderately fragmented field of industrial and institutional filers
Dynapower Company ranks first with 58 patent families, followed by Hitachi Energy at 36 and Siemens AG at 32. The top tier also includes Caterpillar (27) and Indian Institute of Technology (26), reflecting a mix of power-electronics specialists, industrial conglomerates, and academic institutions.
The top five filers account for 23% of the hundred largest filers’ combined total, a share that signals meaningful concentration at the top without a single dominant actor controlling the field. A second tier of applicants — including China, and ABB (Schweiz) AG — holds positions in the 20–24 patent family range, keeping competitive pressure distributed.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Dynapower Company | 58 | |
| 2 | Hitachi Energy Ltd | 36 | |
| 3 | Siemens AG | 32 | |
| 4 | Caterpillar Inc | 27 | |
| 5 | Indian Institute of Technology | 26 | |
| 6 | King Fahd University of Petroleum and Minerals | 24 | |
| 7 | State Grid Corporation of China | 21 | |
| 8 | Causam Energy Inc | 20 | |
| 9 | ABB (Schweiz) AG | 20 | |
| 10 | General Electric Co | 17 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Neworld Energy LLC | 17 | |
| 12 | TOSHIBA ENERGY SYST & SOLUTIONS CORP | 15 | |
| 13 | Toshiba Corporation | 15 | |
| 14 | The Boeing Company | 14 | |
| 15 | Swanbarton | 14 | |
| 16 | Go Electric Inc | 13 | |
| 17 | VoltaGrid LLC | 11 | |
| 18 | NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SAN… | 10 | |
| 19 | DMK Nano LLC | 10 | |
| 20 | MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD | 10 |
Dynapower’s lead, combined with its deep focus on power supply and grid systems and power conversion, suggests that its portfolio could function as a prior-art barrier for entrants targeting grid-forming inverter and energy storage control architectures. Industrial incumbents like Siemens and Caterpillar have broad coverage that extends across grid management protocols, pointing to diversified defensive positions rather than narrow product-specific filings.
Activity in the most recent 18–24 months is likely under-counted due to standard patent publication lag; current figures should be treated as a floor for recent-period filings. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity continues to grow; power supply and grid systems dominates the technology mix
Annual filing volume has grown on a multi-year basis, with 2024 representing the highest recorded annual count in the dataset. Technology coverage is heavily concentrated in grid systems and power supply, with adjacent branches in power conversion, control systems, and AI-based computing adding secondary depth.
Annual filing trend
Annual filings rose from 73 in 2017 to a recorded peak of 140 in 2024, with 2025 showing 110 and 2026 showing 41 — the latter two figures reflecting publication lag and should not be read as a slowdown. The overall multi-year trajectory supports the Growth lifecycle designation.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply and grid systems) overwhelmingly dominates the branch mix, reflecting the field’s core focus on grid interconnection and control architectures. H02M (Power conversion), G06Q (Business and administrative data processing), G05B (Control and regulating systems), and G06N (AI-based computing) form a meaningful secondary layer, indicating increasing integration of digital control, market dispatch logic, and machine learning into microgrid architectures.
↗ 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.
Combined renewable energy and compressed gas energ…
A combined heat and power system, namely a portable combined heat and power microgrid system with the capacity to convert air to electricity, since the system imparts excess energy derived from multiple electrical energy sources, namely renewables or other sources of electrical supply like gas-induced electrical generation, to produce and store energy as… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Systems and methods for advanced energy settlement… | 482 |
| 2 | Modular microgrid unit and method of use | 194 |
| 3 | Ac connected modules with line frequency or voltag… | 150 |
| 4 | Generator dispatching or load shedding control met… | 114 |
| 5 | Optimal control technology for distributed energy … | 113 |
| 6 | Systems and methods for advanced energy settlement… | 86 |
| 7 | 一种基于虚拟同步发电机的微网微源控制方法 | 77 |
| 8 | Integrated power sharing control method for three-… | 76 |
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 structure means for R&D investment decisions
The field’s growth stage, moderate concentration, active collaboration among leading power-technology firms, and strong US-India-European jurisdictional spread each carry distinct implications for portfolio strategy and market entry.
Active growth stage with multi-year upward trajectory
The field is classified as Growth, with annual filings still rising on a multi-year basis; the lifecycle assessment notes that recent years are understated by publication lag. The 14% recent-window growth figure confirms that investment in microgrid control IP remains attractive. New entrants including Caterpillar and King Fahd University of Petroleum and Minerals have emerged with material recent filing volumes, reinforcing that the competitive window has not closed.
Growth stageModerate top-tier concentration with an accessible second tier
The top five filers hold 23% of the hundred largest filers’ combined total — concentrated enough to create prior-art density in core grid-forming and energy dispatch architectures, but not so dominant that new positions are foreclosed. The second tier (positions 6–10) spans 17–26 patent families, meaning a focused campaign of 20–30 well-scoped families could establish a credible competitive position. Academic and national-lab filers in the ranking also suggest licensable prior art exists outside incumbent industrial portfolios.
Moderate concentrationABB-Hitachi Energy axis is the most active co-filing cluster
The strongest co-applicant relationship in the corpus links ABB (Schweiz) AG with Hitachi Energy Switzerland AG (8 co-filed families), reflecting the corporate transition from ABB Power Grids to Hitachi Energy. ABB (Schweiz) AG also co-files with Hitachi Energy Ltd (6 families) and with ABB Power Grids Switzerland AG (4 families), and Hitachi Energy Ltd co-files with Hitachi Energy Switzerland AG (6 families). State Grid Corporation of China and its Zhejiang subsidiary account for 5 co-filed families, pointing to a parallel utility-led collaboration axis in China.
Co-filing clustersUS leads filings; India and Europe form a significant secondary base
The United States is the top filing jurisdiction, followed by India and Europe (EPO), then China and WIPO (PCT). The outsized Indian presence — ahead of China and EPO at the record level — reflects the strong academic and institutional filing activity of Indian Institute of Technology and affiliated entities. Australia and Canada round out the top six, suggesting that off-grid and island-grid application markets in those geographies are commercially relevant to filers. Emerging-market jurisdictions such as Brazil and Taiwan show minimal coverage, representing potential freedom-to-operate zones.
US-India-EPO ledGo 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 |
|---|---|---|
| ABB (Schweiz) AG | Hitachi Energy Switzerland AG | 8 |
| ABB (Schweiz) AG | Hitachi Energy Ltd | 6 |
| Hitachi Energy Ltd | Hitachi Energy Switzerland AG | 6 |
| State Grid Corporation of China | Electric Power Research Institute of State Grid Zhejiang Electric Power Co Ltd | 5 |
| ABB (Schweiz) AG | ABB Power Grids Switzerland AG | 4 |
| ABB Power Grids Switzerland AG | Hitachi Energy Switzerland AG | 4 |
| ABB Power Grids Switzerland AG | Hitachi Energy Ltd | 4 |
| State Grid Corporation of China | Electric Power Research Institute of State Grid Shandong Electric Power Co | 3 |
| General Electric Co | GE Grid Solutions LLC | 2 |
| ABB (Schweiz) AG | ABB Research Ltd | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Dynapower leads on grid systems depth; challengers diversify across control and dispatch
The two largest filers exemplify divergent portfolio strategies: Dynapower concentrates tightly on power supply and grid systems with a power-conversion secondary, while Siemens AG pursues broader grid management and control systems coverage.
Dynapower Company
Dynapower Company holds 58 patent families, the largest position in the corpus. Its technology emphasis is concentrated in H02J 3 (grid interconnection and power flow control, 54 sub-class records), H02J 7 (battery charging and energy storage interface, 23 records), and H02M 3 (DC power conversion, 8 records), indicating a specialist portfolio focused on inverter-based grid-forming and storage integration. Momentum data does not indicate a recent surge, consistent with an established incumbent sustaining a mature leadership position rather than a new-entrant acceleration.
families: 58Siemens AG
Siemens AG holds 32 patent families and emphasizes H02J 3 (31 records) alongside H02M 5 (AC power conversion, 5 records) and H02J 13 (remote grid management protocols, 4 records). The breadth across interconnection, conversion, and remote monitoring reflects a systems-integrator rather than component-specialist positioning. Momentum evidence for Siemens is not separately called out in the applicant momentum data, suggesting a stable rather than accelerating recent trajectory.
families: 32| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Caterpillar Inc | 22 | ▲ new entrant |
| Indian Institute of Technology | 3 | ▼ -85% |
| King Fahd University of Petroleum and Minerals | 22 | ▲ new entrant |
| ABB (Schweiz) AG | 1 | ▲ new entrant |
| Hitachi Energy Ltd | 2 | ▲ new entrant |
| State Grid Corporation of China | 2 | ▲ new entrant |
Under-served branches adjacent to the dominant grid-systems core
Several IPC branches appear at lower relative share within the corpus despite having clear technical relevance to microgrid control for renewable integration. These are observations of relative sparsity; entry-path viability depends on applicant-specific capabilities and freedom-to-operate assessments.
G05B · Control & Regulating Systems
G05B accounts for 7% of branch records in the corpus, well below the dominant H02J share, despite being technically central to closed-loop microgrid control, supervisory control, and real-time automation. The branch covers programmable controllers and adaptive control algorithms — both relevant to islanding detection and frequency regulation. The sparse coverage relative to H02J suggests that control-theoretic approaches to microgrid management have not been extensively claimed as distinct from broader power-systems filings, leaving potential space for applicants with expertise in model-predictive or adaptive control.
Search this in Eureka →G06N · Computing Based on AI Models
G06N represents only 3% of branch records despite the visible trend toward AI-assisted dispatch, load forecasting, and reinforcement-learning-based microgrid optimization. The branch’s low share relative to H02J and even G06Q suggests that AI-native control architectures for microgrids are not yet densely claimed. Applicants with machine-learning capabilities who have not yet built grid-systems portfolios could find this branch offers a differentiated entry angle, though prior art from academic filers (including Indian Institute of Technology, with wind turbine and storage sub-class filings) should be assessed before filing.
Search this in Eureka →How leading applicants differ across technology sub-routes
Strength of each leader across the main technology routes.
| Player | H02J 3 · Power supply & grid systems | H02J 7 · Power supply & grid systems | H02J 13 · Power supply & grid systems | G06Q 50 · Business, commerce & admin data processing | H02M 7 · Power conversion (AC/DC etc.) |
|---|---|---|---|---|---|
| Dynapower Company | Strong · 54 | Moderate · 23 | Absent | Absent | Emerging · 6 |
| Causam Energy Inc | Strong · 17 | Absent | Strong · 9 | Strong · 16 | Absent |
| Caterpillar Inc | Strong · 26 | Moderate · 6 | Emerging · 4 | Absent | Emerging · 3 |
| Siemens AG | Strong · 31 | Absent | Emerging · 4 | Absent | Absent |
| Indian Institute of Technology | Strong · 24 | Moderate · 11 | Absent | Absent | Absent |
| Neworld Energy LLC | Strong · 17 | Absent | Strong · 14 | Absent | Absent |
| ABB (Schweiz) AG | Strong · 22 | Absent | Emerging · 3 | Absent | Emerging · 2 |
Frequently asked questions
The corpus contains 862 patent families in scope. The United States is the leading filing jurisdiction, followed by India and Europe (EPO).
Dynapower Company holds the largest position with 58 patent families, concentrating its filings in grid interconnection and power flow control (H02J 3) and energy storage interface (H02J 7).
The field is classified as Growth. Annual filings rose on a multi-year basis, reaching a recorded peak of 140 in 2024. The most recent filing years are understated due to publication lag and should not be read as a plateau or decline.
The most active co-filing relationship links ABB (Schweiz) AG and Hitachi Energy Switzerland AG with 8 co-filed families, reflecting the ABB Power Grids-to-Hitachi Energy corporate transition. ABB (Schweiz) AG and Hitachi Energy Ltd share 6 co-filed families, and State Grid Corporation of China co-files with its Zhejiang subsidiary on 5 families.
G05B (Control and regulating systems) and G06N (AI-based computing) appear at 7% and 3% of branch records respectively, both well below the dominant H02J share despite being directly relevant to closed-loop microgrid control and AI-assisted dispatch. These represent adjacent branches with relatively sparse coverage in the current corpus.
Yes. Caterpillar Inc and King Fahd University of Petroleum and Minerals are both flagged as new entrants in recent filing momentum data, each with 22 recent patent families, indicating rapid portfolio build-up from a low prior base. ABB (Schweiz) AG, Hitachi Energy Ltd, and State Grid Corporation of China are also flagged as new entrants in the recent window with smaller recent counts.
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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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