Grid-Forming Inverter for Utility Grid Patent Landscape
Grid-Forming Inverter for Utility Grid Patent Landscape in 2026
Grid-forming inverter IP is in an active growth phase, with General Electric Renovables España SL holding a commanding lead across 364 patent families globally. The field is GE-family dominated with wind-energy incumbents and a handful of energy-storage specialists challenging, while filing momentum has been strongly positive over the multi-year window.
GE entities lead a concentrated but broadening field
General Electric Renovables España SL is the clear frontrunner, ranking first among the top hundred filers. The top five filers’ share of the hundred largest filers stands at 35%, signalling meaningful concentration at the top tier.
Below the GE cluster, Vestas Wind Systems, Vestesen Hybrid Energy, and Bloom Energy form a secondary tier, each with materially fewer patent families than the leader. The gap between first and second place is substantial, indicating a structural lead rather than a marginal advantage.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | General Electric Renovables España SL | 53 | |
| 2 | Vestas Wind Systems AS | 20 | |
| 3 | Vestesen Hybrid Energy APS | 17 | |
| 4 | GE Infrastructure Technology LLC | 17 | |
| 5 | GE Vernova Infrastructure Technology LLC | 14 | |
| 6 | Bloom Energy Corporation | 14 | |
| 7 | Siemens Gamesa Renewable Energy AS | 10 | |
| 8 | Battelle Memorial Institute | 10 | |
| 9 | TMEIC Corporation | 8 | |
| 10 | Siemens AG | 8 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Adaptr Inc. | 8 | |
| 12 | General Electric Company | 7 | |
| 13 | General Electric Technology GmbH | 6 | |
| 14 | Zola Electric Labs Inc. | 6 | |
| 15 | Mitsubishi Electric Corporation | 5 | |
| 16 | Danvest Energy AS | 5 | |
| 17 | pXiSE Energy Solutions LLC | 5 | |
| 18 | Ford Global Technologies LLC | 5 | |
| 19 | State Grid Corporation of China | 4 | |
| 20 | State Grid Sichuan Electric Power Corporation | 4 |
The leader’s position, built predominantly on power-supply and grid-systems IP alongside wind-turbine control, reflects a deliberate strategy to own the interface between renewable generation assets and the utility network—an architecture likely to create licensing leverage as grid-forming mandates spread.
Filing data for the most recent 18–24 months is subject to publication lag and will understate actual activity; late-period counts should be read as minimums rather than final totals. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Rapid multi-year growth with power-grid systems dominating the technology mix
Annual filing volume and technology composition together reveal both the pace of competitive entry and where technical development is concentrated. The trend chart tracks yearly filing activity; the composition chart shows the spread across IPC classes.
Annual filing trend
Filings were negligible before 2019, then expanded sharply, reaching visible peaks in 2023 and 2024. The 2025 and 2026 bars are artificially suppressed by publication lag and do not reflect a real slowdown; the multi-year growth rate of 237% confirms the field is still expanding on a multi-year basis.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (Power supply & grid systems) dominates by a wide margin, consistent with the core grid-integration function of grid-forming inverters. H02M (Power conversion) is the second-largest branch, followed by F03D (Wind motors), confirming that wind-coupled grid-forming architectures are the primary application context. Smaller shares in H02P, B60L, G05B, and H02H indicate adjacent activity in generator control, vehicle-to-grid interfaces, automation, and protective circuits respectively.
↗ 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.
System and method for protecting grid-forming inve…
A method for protecting a grid-forming inverter-based resource connected to a power grid from power deviations. The method includes receiving a first feedback signal for a first parameter. The first parameter being one of a power of the grid-forming inverter-based resource or an electrical frequency of the power grid. The method also includes determining a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Emergency Load Management Using A DC Microgrid Dur… | 42 |
| 2 | Distributed energy resource management system | 36 |
| 3 | Method of starting a wind park | 29 |
| 4 | Method of starting a wind park | 28 |
| 5 | 具有动态限流功能的构网型逆变器控制方法 | 24 |
| 6 | Using distributed power electronics-based devices … | 21 |
| 7 | System-level overload ride-through control strateg… | 19 |
| 8 | Grid forming wind turbine with an electric storage | 19 |
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
Four structural dimensions—maturity, concentration, collaboration, and geography—shape the risk-reward calculus for any organisation evaluating entry or expansion in grid-forming inverter IP.
Growth stage: early but accelerating
The lifecycle evidence places this field firmly in the Growth stage. Annual filings were near zero before 2019 and have expanded dramatically over the subsequent years, with the multi-year growth rate at 237%. Technical debate is still open on optimal control architectures, meaning well-scoped new filings can still secure broad claims.
Growth stageGE-family dominance with a thin challenger tier
The top five filers account for 35% of the combined output of the hundred largest filers. General Electric Renovables España SL alone holds 53 patent families, more than 2.5 times the next-ranked applicant. This asymmetry raises freedom-to-operate considerations for new entrants designing systems that mirror GE’s H02J3 / wind-turbine control architecture.
High concentrationNo co-applicant activity detected in current evidence
The collaboration dataset returned no co-applicant pairs for this corpus. This absence may indicate that leading players are filing independently to retain full ownership of foundational IP, or that cross-institutional work is filed under a single lead name. Monitoring consortium activity—particularly as grid codes evolve—would be prudent.
Evidence pendingUS-first filing strategy with meaningful EPO and China coverage
The United States is the lead jurisdiction by patent record count, followed by China, the EPO, and WIPO (PCT). India and Australia appear as secondary markets, consistent with large-scale renewable build programmes in both countries. The limited presence in Japan, South Korea, and Southeast Asia suggests potential coverage gaps for applicants with global commercialisation ambitions.
US-led, multi-regionGo 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.
Co-filing pairs, ranked by the number of jointly-filed patent families.
GE Renovables leads; wind and storage specialists form the challenger tier
The applicant ranking is dominated by GE-affiliated entities, with wind OEMs and energy-storage companies holding the next positions. Momentum data shows that most top challengers entered the corpus only in the recent filing window, reflecting the field’s rapid commercialisation.
General Electric Renovables España SL
The top-ranked applicant with 53 patent families, this entity focuses heavily on H02J3 (power supply and grid systems), H02P9 (generator control), and F03D7 (wind turbine control)—a portfolio that ties grid-forming inverter control directly to wind generation assets. Filing momentum shows a 3.1× increase versus the prior three-year period, confirming active and accelerating prosecution.
patent families: 53Bloom Energy Corporation
Bloom Energy holds 14 patent families and entered the corpus as a new entrant in the recent filing window, with 14 families filed in the recent period. Its technical focus spans H02J3 (grid systems) and H02J13 (networked power distribution), alongside H02M1 (power conversion)—reflecting a fuel-cell-based grid-forming approach distinct from the wind-centric strategies of GE and Vestas. This differentiated entry path reduces direct claim overlap with the leader.
patent families: 14| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| General Electric Renovables España SL | 31 | ▲ 3.1× vs prior 3-yr |
| General Electric Company | 20 | ▲ new entrant |
| Vestas Wind Systems AS | 13 | ▲ new entrant |
| Vestesen Hybrid Energy APS | 13 | ▲ new entrant |
| Bloom Energy Corporation | 14 | ▲ new entrant |
| GE Infrastructure Technology LLC | 10 | ▲ new entrant |
| Battelle Memorial Institute | 6 | ▲ new entrant |
Under-served branches adjacent to the core grid-forming corpus
Several IPC classes appear at low share relative to the dominant H02J branch, signalling areas where grid-forming inverter IP is sparse. These are observations of relative sparsity; technical and commercial plausibility should be assessed before treating them as entry opportunities.
H02H · Protective circuit arrangements
With only 14 patent records, fault-ride-through and overcurrent protection integrated directly into grid-forming inverter architectures is a sparse sub-area. As utility interconnection standards increasingly mandate specific fault-response behaviour from grid-forming units, protection-circuit IP adjacent to the control layer has plausible technical value. Entry could be structured around novel current-limiting topologies referenced in top-cited work on dynamic current limiting for grid-forming inverters.
Search this in Eureka →B60L · Electric vehicle propulsion (vehicle-to-grid)
Only 14 patent records appear under B60L, despite growing policy interest in bidirectional EV chargers operating in grid-forming mode. The intersection of vehicle-to-grid discharge control and grid-forming virtual synchronous machine algorithms is technically coherent and commercially relevant as EV penetration rises. Ford Global Technologies is already listed among the top 20 applicants, suggesting at least one automotive incumbent sees the connection, but the branch remains sparse relative to its potential scope.
Search this in Eureka →How leaders differ by technology route
Strength of each leader across the main technology routes.
| Player | H02J 3 · Power supply & grid systems | H02M 7 · Power conversion (AC/DC etc.) | H02M 1 · Power conversion (AC/DC etc.) | H02J 13 · Power supply & grid systems | F03D 7 · Wind motors (wind turbines) |
|---|---|---|---|---|---|
| General Electric Renovables España SL | Strong · 46 | Emerging · 3 | Emerging · 3 | Emerging · 3 | Emerging · 7 |
| General Electric Company | Strong · 27 | Emerging · 5 | Absent | Absent | Moderate · 10 |
| Vestas Wind Systems AS | Strong · 20 | Absent | Absent | Absent | Moderate · 5 |
| Bloom Energy Corporation | Strong · 11 | Absent | Moderate · 3 | Moderate · 5 | Absent |
| Siemens Gamesa Renewable Energy AS | Strong · 10 | Absent | Absent | Absent | Strong · 9 |
| Vestesen Hybrid Energy APS | Strong · 17 | Absent | Absent | Absent | Absent |
Frequently asked questions
The current evidence covers 364 patent families in scope globally, spanning multiple jurisdictions and a filing window that starts in earnest from 2019 onward.
General Electric Renovables España SL ranks first with 53 patent families, well ahead of the next-ranked applicants. GE-affiliated entities collectively account for a substantial share of the top-20 ranking.
The United States leads by patent record count, followed by China, the EPO (Europe), and WIPO (PCT). India and Australia are secondary markets, while Japan and South Korea have minimal coverage in the current corpus.
The evidence places the field in the Growth stage. Annual filings were negligible before 2019 and have risen sharply since, with a multi-year growth rate of 237%. The most recent filing years are understated due to publication lag.
H02J (Power supply and grid systems) is the dominant class by a wide margin, followed by H02M (Power conversion) and F03D (Wind motors). This reflects the core application context of wind-coupled grid-forming architectures.
The current evidence does not show co-applicant filing pairs in this corpus. Leading applicants appear to be filing independently, which may reflect a preference for sole ownership of foundational IP during this early growth phase.
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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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