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Why Anti Drone Microwaves Attract Investment

Epirus's Leonidas systems show how directed energy has become part of the fast-growing anti-drone industry.

On this page

  • Leonidas as a high power microwave family
  • Rapid acquisition and prototype delivery
  • What commercial funding says about demand
Preview for Why Anti Drone Microwaves Attract Investment

Introduction

Leonidas matters because it turns the anti-drone problem from a one-drone, one-interceptor contest into a “one-to-many” directed-energy problem. Built by Epirus, Leonidas is a family of high-power microwave systems designed to disrupt electronics in drones and other unmanned systems without firing a missile or gun round. Its rise shows why the anti-drone market is attracting defence money: small drones are cheap, numerous and increasingly hard to stop with expensive conventional interceptors. Epirus has moved from prototype demonstrations to US Army contracts, Marine Corps expeditionary work, naval trials and major venture funding, making Leonidas one of the clearest commercial case studies in directed-energy weapons entering the counter-UAS market. [Epirus+2Epirus]epirusinc.comEpirusEpirus Leonidas High-Power Microwave: Directed Energy…Leonidas is a solid-state, high-power HPM system, utilizing Gallium Nitrid…

Overview image for Leonidas

Why Leonidas fits the anti-drone moment

Leonidas sits in the high-power microwave branch of directed energy weapons. Unlike a laser, which normally concentrates heat or optical energy on a specific point, a high-power microwave system sends electromagnetic energy towards electronics. The Office of Naval Research describes high-power microwave weapons as systems that create beams of electromagnetic energy intended to couple with electronics and cause damage or disruption that prevents the target from completing its mission. [Office of Naval Research]onr.navy.milOffice of Naval Research Directed Energy Weapons: High Power MicrowavesOffice of Naval ResearchDirected Energy Weapons: High Power MicrowavesMarch 19, 2022 — HPM weapons create beams of electromagnetic energy…Published: March 19, 2022

That mechanism is why Leonidas is pitched so strongly against drone swarms. A defender facing one small quadcopter can use jamming, a gun, an interceptor drone or a missile. A defender facing many small drones at once has a harder problem: the magazine may run dry, the cost exchange may become absurd, and the operator may not have time to engage every target separately. Epirus describes Leonidas as a solid-state, software-defined, long-pulse high-power microwave system using gallium nitride semiconductors for counter-electronics effects, with emphasis on mobility, deployment speed and operator control. [Epirus]epirusinc.comEpirusEpirus Leonidas High-Power Microwave: Directed Energy…Leonidas is a solid-state, high-power HPM system, utilizing Gallium Nitrid…

The attraction is not that microwaves are magic. It is that they offer a different engagement geometry. A microwave system can be designed to affect more than one target in an area, which is precisely the feature that makes it attractive against groups of small unmanned aircraft. The same feature is also a constraint: the US Government Accountability Office warns that wider-beam directed-energy systems, including high-power microwave or millimetre-wave weapons, can affect assets in an area whether friendly or hostile. [GAO]gao.govgao 23 106717Science & Tech Spotlight: Directed Energy Weapons25 May 2023 — For example, wider beam DEWs, such as high power microwave or millimete…Published: May 2023

Leonidas as a high-power microwave family

Leonidas is best understood not as a single box, but as a product family built around a scalable microwave architecture. The core line is aimed at counter-UAS and counter-electronics missions; variants and integrations then adapt that effect to different military settings.

The baseline Leonidas system is the centre of the family. Epirus presents it as a high-power microwave platform for electronic warfare and layered short-range air defence, designed to defeat electronics rather than physically intercept targets. [Epirus]epirusinc.comEpirusEpirus Leonidas High-Power Microwave: Directed Energy…Leonidas is a solid-state, high-power HPM system, utilizing Gallium Nitrid… General Dynamics Land Systems has also promoted Stryker Leonidas, integrating the high-power microwave array onto the Stryker 8×8 combat vehicle, which shows the market logic clearly: the microwave weapon is not just a laboratory device, but a payload that can be mounted on existing military vehicle families. [Epirus]epirusinc.comEpirusEpirus, General Dynamics Land Systems Unveil Integrated…5 Oct 2022 — The companies have successfully integrated Epirus' high-pow…

Leonidas Expeditionary takes the same basic business case into a lighter, more mobile setting. In September 2024, Epirus announced work on an Expeditionary Directed Energy Counter-Swarm system for the US Marine Corps, with the Office of Naval Research, Marine Corps Warfighting Laboratory and Joint Counter-small Unmanned Aircraft Systems Office involved. The prototype was developed under a $5.5 million contract and was intended for expeditionary short-range air defence, including integration with light tactical vehicles, trailers and similar platforms. [DefenseScoop]defensescoop.comDefense Scoop Marines to get new drone-killing microwave weaponDefense Scoop Marines to get new drone-killing microwave weapon

Leonidas H2O extends the family into maritime interdiction. Epirus introduced the system in April 2025 after US Navy Advanced Naval Technology Exercise Coastal Trident testing against commercially available vessel motors from 40 to 90 horsepower. The company described H2O as a maritime high-power microwave system for countering boat motors, unmanned surface vessels and aerial drones, indicating that the same anti-electronics logic can be marketed beyond airborne drones. [Epirus]epirusinc.comOpen source on epirusinc.com.

By March 2026, the family had also moved towards autonomous mobility. General Dynamics Land Systems, Epirus and Kodiak AI unveiled Leonidas AGV, placing the Leonidas high-power microwave platform on an autonomous truck-based vehicle that can be teleoperated or run without direct human driving. That integration is significant because it links three market trends at once: counter-drone defence, unmanned ground mobility and critical-asset protection. [General Dynamics Land Systems]gdls.comOpen source on gdls.com.

Leonidas illustration 1

Rapid acquisition turned a demonstration into a defence programme

Leonidas became commercially important when it crossed from demonstration into rapid military acquisition. In January 2023, the US Army’s Rapid Capabilities and Critical Technologies Office awarded Epirus a $66.1 million contract for the Indirect Fire Protection Capability-High-Power Microwave programme. The award covered four prototype systems derived from Leonidas for counter-drone and counter-swarm missions. [DefenseScoop]defensescoop.commicrowave weaponmicrowave weapon

The pace is the key point. Epirus announced the first IFPC-HPM prototype delivery in November 2023, less than a year after the contract was announced, and said in May 2024 that it had delivered the final two of four systems to the US Army while completing new equipment training and engineering developmental testing. That sequence shows why directed-energy counter-drone systems are drawing attention: the Pentagon does not need a perfect mature programme to begin operational learning; it can buy prototypes, train soldiers, test doctrine and feed the results back into the next generation. [Breaking Defense]breakingdefense.comarmy gets its hands on new high power microwave prototype from epirusarmy gets its hands on new high power microwave prototype from epirus

The follow-on award reinforced that trajectory. In July 2025, Epirus announced a $43.5 million US Army contract for Generation II IFPC-HPM systems. The company said the second generation was expected to more than double range and improve power, lethality and usability compared with the earlier generation. Specialist defence reporting described the award as covering two advanced Generation II Leonidas air-defence systems, associated equipment and spares for test events, with options for further support. [Epirus]epirusinc.comOpen source on epirusinc.com.

That matters historically because anti-drone systems often fail to move beyond isolated demonstrations. Leonidas has not been proven as a universal answer to drones, but it has achieved something commercially more concrete: repeated funded transitions from prototype to delivered systems, then to upgraded systems and adjacent variants.

Company offers a high-power microwave option for Navy’s drone swarm threat

Channel: Military Times

Open on YouTube

The 49-drone demonstration and what it proves

The most memorable Leonidas claim came from a 2025 live-fire demonstration at Camp Atterbury, Indiana. Epirus said Leonidas neutralised 61 of 61 drones flown during the event, culminating in a 49-drone swarm defeated with a single pulse of electromagnetic interference. The company framed the demonstration as proof of the system’s “one-to-many” counter-swarm value. [Epirus]epirusinc.comOpen source on epirusinc.com.

The demonstration is important, but it should be read carefully. It is strong evidence that Epirus can stage a convincing counter-swarm test under controlled live-fire conditions, and it explains why observers from the US defence community and allied nations would pay attention. It is not the same thing as proof that high-power microwave systems can defeat every drone threat in all weather, terrain, electromagnetic and rules-of-engagement conditions. [Tom's Hardware]tomshardware.comTom's Hardware High-power microwave system downs 49 drones in one shotThe demonstration attracted representatives from the U.S. Department of Defense, other government agencies, and nine allied nations. It s…

The practical value of the demonstration is comparative. A missile or gun-based system can be excellent against a target it can track and engage, but every shot consumes ammunition and often engages one target at a time. A microwave system that can disable many drones in one pulse changes the economics of a dense raid. That does not remove the need for radar, optical tracking, command-and-control, kinetic interceptors or electronic warfare. It gives commanders another layer, particularly for the moment when the threat is not one drone but a crowd of cheap airframes arriving together.

What commercial funding says about demand

Epirus’s funding history shows that the anti-drone market is no longer just a procurement niche inside traditional defence primes. In March 2025, Reuters reported that Epirus had raised $250 million in Series D funding to scale production of anti-drone weapons, bringing total funding to more than $550 million. Reuters linked the round to demand created by the Russia-Ukraine war and wider geopolitical pressure, and noted the company’s earlier $66 million US Army Leonidas contract. [Reuters]reuters.comDefense tech startup Epirus secures $250 million to make anti-drone weaponsDefense tech startup Epirus secures $250 million to make anti-drone weapons

Axios described the same round as a push to expand production of Leonidas and move into overseas and commercial markets. That last phrase is important: the anti-drone market is broadening from battlefield use towards protection of bases, ports, airports, energy sites, data centres and large public venues. Leonidas itself remains a defence-grade high-power microwave system, not a general civilian security gadget, but its funding case depends on the wider belief that counter-drone demand will keep expanding. [Axios]axios.comDrone-frying defense firm Epirus raises $250 millionCEO Andy Lowery emphasized the strategic importance of shifting from traditional "one-to-one" defense tactics to "one-to-many" solutions…

Market estimates are imprecise, but they point in the same direction. Reuters reported in June 2026 that analysts estimate the global counter-drone market at roughly $3 billion to $7 billion, growing about 20 per cent annually, with one forecast placing it at $14.5 billion by 2030. The same report noted rising demand for drone detection and defence technologies beyond the battlefield, including airports, oil fields, ports and data centres, while warning that civilian deployment faces regulatory and safety limits. [Reuters]reuters.comHowever, the implementation of such systems in civilian environments faces significant regulatory hurdles. Civil airports are restricted…

For Leonidas, the investment signal is therefore not simply “microwave weapons are fashionable”. It is more specific: investors appear to be betting that militaries and critical-infrastructure operators will need scalable, reusable defeat mechanisms against drones, and that directed-energy systems could become part of that layered architecture.

Leonidas illustration 2

Why microwave anti-drone systems attract buyers

Leonidas highlights three reasons high-power microwave systems appeal to defence buyers. [tomshardware.com]tomshardware.comThe Leonidas platform has previously demonstrated its capability by disabling 49 drones simultaneously, showcasing its effectiveness in r…

First, they promise magazine depth. A system powered by electricity does not carry a finite rack of interceptor missiles in the same way a launcher does. Power generation, cooling and maintenance still matter, but the shot inventory problem is different. This is why directed-energy systems are often discussed as a lower-cost-per-engagement layer rather than as a replacement for all existing air defence. Congressional Research Service reporting notes that directed-energy weapons may offer lower logistical burdens and deeper magazines, provided the system has sufficient power. [USNI News]news.usni.orgNews Report to Congress on Defense Department Directed EnergyNews Report to Congress on Defense Department Directed Energy

Second, they are naturally relevant to swarms. Drone swarms stress human operators and conventional fire-control systems because the defence must decide, track and engage quickly. A high-power microwave system can be attractive if it can affect many drones within a beam or sector. This is the core commercial contrast between Leonidas and many kinetic counter-drone tools.

Third, they offer a path around some radio-control assumptions. Many counter-drone systems rely on jamming links between drone and operator. That can be ineffective against drones using autonomy, pre-programmed routes or hard-to-jam control methods. Epirus claimed in January 2026 that Leonidas demonstrated effects against fibre-optic-controlled unmanned aircraft, a category that matters because such drones are designed to resist conventional radio-frequency jamming. [Epirus]epirusinc.comOpen source on epirusinc.com.

The catch is that each advantage has an operational shadow. Wide-area effects raise safety and discrimination questions. Directed-energy systems need power, cooling, targeting and integration with sensors. Civilian use is especially constrained because airports, cities and critical infrastructure cannot simply irradiate or jam everything in the area. That is why Leonidas is best understood as a military and high-security counter-swarm layer, not as a universal drone shield. [GAO]gao.govgao 23 106717Science & Tech Spotlight: Directed Energy Weapons25 May 2023 — For example, wider beam DEWs, such as high power microwave or millimete…Published: May 2023

Epirus’ Leonidas High-Power Microwave Neutralizes 61-of-61 Drones Across 5 Flight Scenarios

Channel: Epirus

Open on YouTube

The market is moving from single systems to layered architectures

Leonidas’s commercial evolution also shows how the anti-drone market is changing. The early counter-drone market often looked like a catalogue of separate tools: radar, camera, jammer, net gun, interceptor drone, missile, laser or microwave. The more mature market is shifting towards layered systems that combine detection, identification, command-and-control and multiple defeat options.

That shift explains why Leonidas keeps appearing in integrations rather than only as a standalone weapon. Stryker Leonidas connects microwave effects to an armoured vehicle. Leonidas Expeditionary aims at Marine Corps mobility and expeditionary basing. Leonidas H2O adapts the technology to maritime threats. Leonidas AGV combines microwave effects with autonomous ground movement. Each variant points to a different buyer question: can it move with troops, protect a base, defend a port, support a convoy or reduce risk to personnel? General Dynamics Land Systems+3General Dynamics Land Systems+3Epirus [gdls-ausa.com]gdls-ausa.comOpen source on gdls-ausa.com.

This is also why Leonidas should not be compared only with other directed-energy systems. In procurement reality, it competes and cooperates with missiles, guns, jammers, interceptor drones, passive detection systems, hardened shelters and better base procedures. US counter-drone officials have repeatedly stressed layered defence because no single technology defeats all drone threats; recent reporting on US counter-drone efforts has echoed that point as the Department of Defense accelerates testing and fielding. [Business Insider]businessinsider.comOpen source on businessinsider.com.

Drone Swarms Are Here. This Technology Could Stop Them.

Channel: Sam Eckholm

Open on YouTube

What Leonidas reveals about directed-energy weapons now

Leonidas is not the arrival of science-fiction warfare. It is something more practical and more revealing: a directed-energy weapon family shaped by the economics of cheap drones, rapid acquisition and venture-backed defence manufacturing.

Historically, directed-energy weapons were often discussed as long-horizon technology. Leonidas belongs to a newer phase in which specific threats have pulled the technology into urgent procurement. Small drones created a concrete problem; high-power microwaves offered a plausible “many targets at once” effect; rapid acquisition offices funded prototypes; venture investors funded production scale; and defence primes partnered on platforms and integration.

The result is a useful benchmark for the anti-drone market. A counter-drone system now has to prove more than technical novelty. It must show that it can fit into vehicles, ships, expeditionary units and command networks; that it can be delivered quickly enough to matter; that it can keep improving across generations; and that it can justify its place in a layered defence where missiles, guns, jammers and sensors already exist. Leonidas has not answered every battlefield question, but it has shown why high-power microwave systems have become one of the most investable branches of directed-energy weapons.

Leonidas illustration 3

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Endnotes

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    Title: Office of Naval Research Directed Energy Weapons: High Power Microwaves
    Link: https://www.onr.navy.mil/organization/departments/code-35/division-353/directed-energy-weapons-high-power-microwaves
    Source snippet

    Office of Naval ResearchDirected Energy Weapons: High Power MicrowavesMarch 19, 2022 — HPM weapons create beams of electromagnetic energy...

    Published: March 19, 2022

  2. Source: gao.gov
    Title: gao 23 106717
    Link: https://www.gao.gov/products/gao-23-106717
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    Science & Tech Spotlight: Directed Energy Weapons25 May 2023 — For example, wider beam DEWs, such as high power microwave or millimete...

    Published: May 2023

  3. Source: defensescoop.com
    Title: Defense Scoop Marines to get new drone-killing microwave weapon
    Link: https://defensescoop.com/2024/09/23/marines-microwave-weapon-hpm-epirus-leonidas-expeditionary/

  4. Source: defensescoop.com
    Title: microwave weapon
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  5. Source: reuters.com
    Title: Defense tech startup Epirus secures $250 million to make anti-drone weapons
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  6. Source: axios.com
    Title: Drone-frying defense firm Epirus raises $250 million
    Link: https://www.axios.com/2025/03/05/epirus-directed-energy-drone-funding
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    CEO Andy Lowery emphasized the strategic importance of shifting from traditional "one-to-one" defense tactics to "one-to-many" solutions...

  7. Source: reuters.com
    Link: https://www.reuters.com/business/aerospace-defense/drone-strikes-beyond-battlefield-pump-up-market-technology-repel-them-2026-06-18/
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  8. Source: news.usni.org
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    Epirus Leonidas HPM: The Premier Counter-Drone Swarm Solution...

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    Company offers a high-power microwave option for Navy's drone swarm threat...

  13. Source: youtube.com
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    Epirus' Leonidas High-Power Microwave Neutralizes 61-of-61 Drones Across 5 Flight Scenarios...

  14. Source: youtube.com
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    New Weapon Downs Dozens of Attack Drones in Stunning Display...

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    EpirusEpirus Leonidas High-Power Microwave: Directed Energy...Leonidas is a solid-state, high-power HPM system, utilizing Gallium Nitrid...

  16. Source: epirusinc.com
    Link: https://www.epirusinc.com/press-releases/epirus-finalizes-delivery-of-four-ifpc-hpm-systems-to-u-s-army-completes-new-equipment-training-and-engineering-developmental-testing
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    EpirusEpirus Finalizes Delivery of Four IFPC-HPM Systems to...15 May 2024 — Epirus announced today that it has delivered the final two o...

    Published: May 2024

  17. Source: epirusinc.com
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    Navy for...29 Apr 2025 — Leonidas Expeditionary was introduced in 2024 and is the latest addition to the company's suite of scalable hig...

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    EpirusEpirus, General Dynamics Land Systems Unveil Integrated...5 Oct 2022 — The companies have successfully integrated Epirus' high-pow...

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    The Leonidas platform has previously demonstrated its capability by disabling 49 drones simultaneously, showcasing its effectiveness in r...

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    Title: Tom’s Hardware High-power microwave system downs 49 drones in [one shot]({{ ‘one-shot/’ | relative_url }})
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    Link: https://www.gdls.com/ausa-2025/

  53. Source: washingtontechnology.com
    Link: https://www.washingtontechnology.com/companies/2025/03/epirus-collects-250m-series-d-capital-scale-production/403490/

  54. Source: army-technology.com
    Title: epirus to deliver leonidas prototype systems for us army
    Link: https://www.army-technology.com/news/epirus-to-deliver-leonidas-prototype-systems-for-us-army/

  55. Source: ausa.org
    Title: Countering Small Drones: Office Works Toward Joint
    Link: https://www.ausa.org/articles/countering-small-drones-office-works-toward-joint-solutions-growing-threat

  56. Source: govconwire.com
    Title: epirus series d funding round
    Link: https://www.govconwire.com/articles/epirus-series-d-funding-round

  57. Source: calibredefence.co.uk
    Title: epirus zaps fibre optic fpv with leonidas microwave weapon
    Link: https://www.calibredefence.co.uk/epirus-zaps-fibre-optic-fpv-with-leonidas-microwave-weapon/

  58. Source: nightdragon.com
    Link: https://www.nightdragon.com/portfolio/epirus/

  59. Source: airpower.airforce.gov.au
    Title: airforce.gov.au Directed Energy Weapons
    Link: https://airpower.airforce.gov.au/sites/default/files/2021-03/BPAF03_Directed-Energy-Weapons.pdf

  60. Source: defence-blog.com
    Title: epirus confirms leonidas microwave system integration with dft platform
    Link: https://defence-blog.com/epirus-confirms-leonidas-microwave-system-integration-with-dft-platform/

  61. Source: unmannedairspace.info
    Link: https://www.unmannedairspace.info/counter-uas-systems-and-policies/epirus-secures-usd-250m-for-counter-drone-expansion/

  62. Source: wordpress-1555235-6025816.cloudwaysapps.com
    Link: https://wordpress-1555235-6025816.cloudwaysapps.com/content/epirus-secures-additional-250m-funding-for-the-leonidas-high-power-microwave-weapon/

  63. Source: defenceleaders.com
    Link: https://defenceleaders.com/news/epirus-secures-250-million-in-production-funding-for-advanced-[drone-defence

Additional References

  1. Source: researchgate.net
    Link: https://www.researchgate.net/publication/401707891_Cost-Effectiveness_Analysis_of_Counter-Unmanned_Aircraft_Systems_Technologies_A_Comparative_Study_of_Kinetic_Electronic_Warfare_and_Directed_Energy_Countermeasures_2022-2026

  2. Source: japcc.org
    Link: https://www.japcc.org/wp-content/uploads/A-Comprehensive-Approach-to-Countering-Unmanned-Aircraft-Systems.pdf

  3. Source: facebook.com
    Link: https://www.facebook.com/TheDallasExpress/posts/after-the-january-raid-targeting-nicolas-maduro-the-department-of-war-confirmed-/1369642828508759/

  4. Source: instagram.com
    Link: https://www.instagram.com/p/DUnsVwGkmkH/

  5. Source: cuashub.com
    Link: https://cuashub.com/wp-content/uploads/2024/12/MarketReport25_V7.pdf

  6. Source: militaryembedded.com
    Link: https://militaryembedded.com/unmanned/counter-uas/directed-energy-counter-swarm-system-under-development-for-us-marine-corps

  7. Source: everycrsreport.com
    Link: https://www.everycrsreport.com/files/2024-07-11_R46925_4c1e5a38ad3d6906a3ea03e0972e08d8979659f3.html

  8. Source: linkedin.com
    Link: https://www.linkedin.com/posts/epirus_introducing-leonidas-h%E2%82%82o-a-high-energy-activity-7315380282667204609-nkba

  9. Source: linkedin.com
    Link: https://www.linkedin.com/posts/leoneluca_defense-tech-startup-epirus-secures-250-activity-7303444569637945344-p94T

  10. Source: reddit.com
    Link: https://www.reddit.com/r/STEW_ScTecEngWorld/comments/1m2npg2/meet_the_microwave_weapon_that_zaps_swarms_of/

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