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Laser Weapons and Directed Energy: What Official Sources Confirm

DragonFire and US directed-energy programmes from official sources: the £10-a-shot claim, GAO's $1bn-a-year figure, and weather and range limits.

By CyphrQ.ai

Written with AI assistance and human editorial review. Every figure linked to its source.

9 min read

Laser weapons are moving from test ranges toward ships. The UK government says its DragonFire laser will be fitted to a Royal Navy Type 45 destroyer by 2027, at "just £10 per shot". The US Government Accountability Office (GAO) reported in April 2023 that the Department of Defense spends about $1 billion a year on directed energy weapons. Officials also list the limits: range, weather, cooling, and the slow path from prototype to service.

This post covers laser weapons and directed energy as official sources describe them: what has been demonstrated, how to read the cost claims, what the auditors found, and what remains unpublished. It covers policy, budgets and stated limits only. It contains no design or targeting detail beyond what governments have released.

What is a directed energy weapon?

GAO's Science & Tech Spotlight on directed energy weapons (GAO-23-106717, 25 May 2023) defines them as weapons that "use concentrated electromagnetic energy to combat enemy forces and assets". It names three main types: high energy lasers, millimetre wave weapons and high power microwave weapons.

Depending on the type and how it is used, GAO says, a directed energy weapon can temporarily degrade a drone's electronics or physically destroy it. GAO describes high energy lasers as producing at least 1 kilowatt, and about 200,000 times the power of a typical laser pointer.

GAO also reports, citing a 2021 Air Force report, that the US and 30 other nations are developing these weapons.

What has the UK's DragonFire laser shown?

DragonFire is a UK programme led by the Defence Science and Technology Laboratory (Dstl) for the Ministry of Defence, with industry partners MBDA, Leonardo and QinetiQ. Two government releases mark its progress.

January 2024: first high-power firing. The MoD's release of 19 January 2024 says a trial at the Hebrides Range achieved "the UK's first high-power firing of a laser weapon against aerial targets". It describes DragonFire as "the result of a £100 million joint investment by the Ministry of Defence and industry". It says the range is classified, and that the weapon is line-of-sight.

November 2025: contract to fit it to a ship. The release of 20 November 2025 announces a "£316 million contract awarded to MBDA UK", supported by QinetiQ and Leonardo. It says DragonFire "will be fitted to a Royal Navy Type 45 destroyer by 2027 – five years faster than originally planned". It reports trials at the Hebrides range against drones that "can fly up to 650km/h", says the programme will "create and sustain 590 jobs across the UK", and, in the release's own words, calls the programme "part of the Strategic Defence Review's commitment to bring into service innovative Directed Energy Weapons".

Milestone Date Official figure
Joint MoD and industry investment by January 2024 £100 million
First high-power firing at aerial targets January 2024 Hebrides Range
Contract for Royal Navy systems November 2025 £316 million
First ship fit planned by 2027 Type 45 destroyer

What does "£10 per shot" actually count?

The wording changed between the two releases. In January 2024 the MoD said: "The cost of operating the laser is typically less than £10 per shot." In November 2025 it said: "The laser system costs just £10 per shot."

The 2024 wording is the more precise one. It describes the cost of operating the laser for a shot, not the cost of owning the system. Neither release counts the £316 million contract, installation on the ship, maintenance, training or the ship's power generation in that figure.

Comparisons with missile prices are common. The government releases I read give no missile price, so I don't quote one. If you see a precise comparison, check where its missile figure comes from.

One more caution from GAO's spotlight: "The longer a laser stays on target, the more damage it causes." So a "shot" is not a fixed amount of energy, and cost per engagement can vary with the target.

What do US official reports say?

Spending and the move to service. GAO's report Directed Energy Weapons: DOD Should Focus on Transition Planning (GAO-23-105868, 17 April 2023) says "DOD spends about $1 billion annually on directed energy". It notes live-fire demonstrations have shot down drones, and that DOD has long had a gap between development and acquisition, sometimes called "the valley of death".

GAO found the services in different places. The Army had a detailed transition plan. The Navy had no documented transition agreements for the programmes GAO reviewed. The Air Force had not consistently prioritised establishing transition partners. GAO warned that without transition planning, the Navy and Air Force "risk developing directed energy weapons that may be misaligned with operational needs".

GAO made four recommendations. When I read the report page on 26 October 2026, the two Air Force recommendations were marked closed and implemented, and the two Navy recommendations were marked open.

Opportunities and open questions. The spotlight lists opportunities: speed-of-light engagement, possibly lower cost per shot than missiles, and "virtually unlimited ammunition" for some types, which "can fire as long as they have power". It also raises uncertainty about long-term health effects on people, and says the application of international laws and guidelines "is not always well defined".

What limits do officials acknowledge?

Limit What the official source says Source
Range "generally less effective the farther they are from the target" GAO-23-106717
Weather fog and storms can reduce a laser beam's range and quality GAO-23-106717
Cooling and atmosphere "Atmospheric conditions and cooling requirements can limit their effectiveness" GAO-23-106717
Line of sight DragonFire is a line-of-sight weapon MoD, January 2024
Power some types "can fire as long as they have power" GAO-23-106717
Getting into service the gap between development and acquisition GAO-23-105868
Health and law uncertain long-term health effects; legal applicability not always well defined GAO-23-106717

The two UK releases I read mention no limitations. The limits in this table come from the US auditor, which is the more independent voice.

What is DragonFire's range, and what hasn't been published?

  • DragonFire's range. The MoD says it is classified.
  • Performance in bad weather for DragonFire specifically. GAO describes the general effect; the UK releases don't address it.
  • Sustained engagement figures, such as how many shots before power or cooling becomes the limit. Not published in the sources I read.
  • Whole-life cost. The releases give a development investment, a contract value and an operating cost per shot, not a cost of ownership.
  • Service dates beyond the first ship fit.

When will DragonFire enter service, and what should you watch?

  1. Whether the first Type 45 fit lands in 2027, as the November 2025 release says.
  2. The status of GAO's two open Navy recommendations.
  3. Any independent review of costs, for example from a national audit body or a parliamentary committee, setting out whole-life figures.
  4. Health-effects research and legal guidance, both raised by GAO as open questions.

Going deeper: for security and IT teams

This section is for technical readers and decision-makers: board members and risk managers at critical-infrastructure operators, procurement and policy analysts, and the IT and security teams who work in defence supply chains.

Reading cost claims like an analyst. Separate three numbers whenever a "per shot" figure appears. Development cost: for DragonFire, the £100 million joint MoD and industry investment the MoD reported in 2024. Acquisition cost: the £316 million contract announced in 2025. Operating cost: the "typically less than £10 per shot" for operating the laser. Don't divide one by another to get a unit price unless the source gives the number of systems and what the contract covers; the releases I read don't. A board paper that quotes only the operating figure is missing most of the money.

Weighing the sources. A government announcement and an audit report do different jobs. The MoD releases describe achievements and plans and list no limits. GAO's reports are written by an independent auditor, name problems and track whether recommendations are carried out. When the two seem to disagree, give extra weight to the auditor on risks and to the programme on facts only it can know, such as contract dates.

What this means for drone risk at your sites. Airports, energy sites, ports and data centres worry about drones. Directed energy weapons are military systems. Whether a civilian operator may interfere with a drone at all is a legal question that differs by country, so take legal advice before buying any mitigation product. Detection, reporting to the authorities and physical-security planning are the parts most organisations can act on.

Supply-chain security. Defence programmes run through prime contractors, partners and smaller suppliers; DragonFire alone names Dstl, MBDA, Leonardo and QinetiQ. If your organisation supplies a defence programme, the security rules are written into the contract. In the UK, the MoD's Cyber Security Model sets a Cyber Risk Profile for each contract, and Defence Standard 05-138 lists the controls required for each profile; suppliers are "contractually required to meet" them and self-assess through a Supplier Assurance Questionnaire. In the US, DFARS clause 252.204-7012 makes covered systems subject to NIST SP 800-171 and requires cyber incidents to be reported "within 72 hours of discovery". Find which profile or clause applies to each contract, map the systems that hold programme data, and check that sub-contracts carry the same terms down. Attackers target the weakest supplier, not the prime.

Information hygiene for staff. Public interest in laser weapons is high, and some details are classified, such as DragonFire's range. Remind staff in defence-adjacent roles not to speculate in public about programme details, and not to open or share documents that appear to be leaked. Report them through your security officer instead.

Questions to ask about any "per shot" or performance claim: - Is the figure an operating cost, an acquisition cost or a whole-life cost? - Was it measured in trials or estimated? - Under what weather conditions were the trials run? - Has an independent body, such as an auditor, reviewed it? - What does the official source say about limits, and if nothing, why not?

A checklist for reading laser weapon headlines

  1. Find the official release behind the headline, and quote its exact wording.
  2. Check what a cost figure includes before comparing it with anything.
  3. Look for an auditor's view on the same programme.
  4. Note what's classified and don't fill the gap with guesses.
  5. Track the stated dates, such as the 2027 ship fit, and check them when they arrive.

Learn more

Key takeaways

  • The UK says DragonFire will be fitted to a Type 45 destroyer by 2027, under a £316 million contract with MBDA UK.
  • The MoD's 2024 wording puts the cost of operating the laser at "typically less than £10 per shot"; that excludes acquisition and support costs.
  • GAO reported in April 2023 that US DOD spends about $1 billion a year on directed energy weapons.
  • GAO found uneven transition planning across the services; two Navy recommendations were still open on 26 October 2026.
  • Official limits include range, fog and storms, cooling, line of sight and uncertain health effects.
  • DragonFire's range is classified. Treat any published range figure with care.

Companies are named in this post as programme partners. It is not investment advice.

Sources