Climate change has stretched what was once a seasonal wildfire threat into a nearly year-round crisis across much of the United States. In response, firefighters and technology companies are turning to unmanned aircraft that can hit small blazes early, before they explode into megafires. This summer, drones capable of spraying water and flame retardants have been practicing that task in California and Alaska, signaling a possible new era in fire suppression.

Most of the drones being tested are significantly smaller than crewed aircraft and have shorter flight ranges, meaning they cannot replace large airtankers that deliver massive payloads of water or fire-suppressing chemicals to remote wildfires. But companies, fire agencies, and the organizers of the $11 million XPRIZE competition are exploring whether small autonomous aircraft can give crews a faster first-response option—one that stops small fires from becoming catastrophic.

Fighting fire with swarms

The California Department of Forestry and Fire Protection, known as CAL FIRE, ran its own field test involving five autonomous drones that worked together to deploy between 500 and 1,000 gallons of foam for suppressing fires on July 15. The demonstration was organized with help from the nonprofit FireWERX and the California-based company Seneca, which plans to make the drones commercially available starting in 2026.

Each of Seneca's Argo-1 drones can carry about 100 pounds of water or fire retardant while working together in swarms of four to six drones. Once a human operator uploads a GPS waypoint, the autonomous drones fly toward their target and use onboard sensors to spot the heat signature of a fire. The drones then find the best hovering altitude before each lines up to spray the fire, one after the other.

The fully loaded drones are limited to a round trip of 10 miles while flying at about 30 miles per hour on average, which means they would ideally need to be prepositioned in fire-prone areas or first transported by ground vehicle. But each drone can fit in the back of a pickup truck with the tailgate down, and two people can even manually carry the empty drones.

Seneca told HeliOps Magazine that the goal is to enable firefighters to refill a returning drone's payload and swap in a fresh battery so that it's ready to fly again in two minutes. The company previously demonstrated its drone technology for San Bernardino County Fire in December 2025.

Testing in the Alaskan wilderness

Separately, the XPRIZE Wildfire competition gave another firefighting drone system its own trial by fire in finals testing just outside of Fairbanks, Alaska in June 2026. The Silvaguard autonomous firefighting drone system—developed by the German company Dryad Networks—worked with Dryad's Silvanet wildfire detection network to autonomously detect and suppress a wildfire within the competition's 1,000 square kilometer test area.

Dryad's detection system consists of solar-powered sensors attached to trees that are designed to detect the smoke from a smoldering fire. When a sensor triggers the alarm via a wireless mesh network to an Internet-connected border gateway device, a prepositioned Silvaguard observation drone launches to confirm and geolocate the fire using infrared and optical imaging sensors, while also ensuring that it is not a false alarm.

That sets the stage for a Silvaguard suppression drone to take off and deploy up to 26 gallons of fire suppressant onto the fire. The drones can be prepositioned inside solar-powered, spherical hangar pods.

Why small drones matter

The use of drones in firefighting is not entirely new. Agencies have employed unmanned aircraft for years to map fire perimeters, assess damage, and relay video to incident commanders. What is new is the shift toward active suppression, where drones do more than observe—they directly attack the fire. This is a meaningful step forward because the first few minutes after ignition are often the most critical for preventing a small fire from racing through dry vegetation and threatening homes.

One of the biggest advantages of small drones is cost. A single Argo-1 unit is far less expensive to operate than a crewed airtanker, and it can be deployed from virtually any location with a flat surface. Firefighters can put a drone in the back of a pickup and drive to a vantage point near a developing fire, launching a strike within minutes. This rapid response could be especially valuable in the early stages of a fire, when suppression efforts are most effective.

There are still significant limitations. Battery life, payload weight, and range all constrain what a drone can do in a large incident. A 10-mile round trip is sufficient for many initial responses, but it is not adequate for remote wildfires deep in the backcountry. For those, large aircraft remain essential. Drones also require trained operators and careful coordination with manned aircraft to avoid collisions in busy airspace.

Nevertheless, the technology is advancing quickly. AI-powered autonomy allows drones to detect heat signatures and adjust their approach without human intervention. Swarm algorithms enable multiple aircraft to coordinate their drops, covering a fire more efficiently than a single unit could. These capabilities are relatively new and are being refined through competitions like XPRIZE, which draws innovators from around the world.

Dryad Networks' approach is notable because it integrates detection and suppression into a single autonomous chain. Instead of relying on human lookouts or passersby to report smoke, the Silvanet network uses tree-mounted sensors to detect the chemical signatures of combustion. An observation drone then verifies the fire's location before a suppression drone is dispatched. This kind of end-to-end automation could reduce response times from hours to minutes in remote forests.

Seneca's strategy is similarly focused on quick deployment, but with a stronger emphasis on human oversight. The Argo-1 is not fully autonomous in the sense of making decisions independent of human intent; it requires a waypoint upload and operates under the direction of a human operator. This hybrid approach may make it easier for fire agencies to integrate drones into existing workflows and regulatory frameworks.

The road to deployment

Regulatory hurdles remain. The Federal Aviation Administration currently restricts many drone operations beyond the visual line of sight, which could limit how far a drone can fly from its operator. Fire agencies and drone companies are working with regulators to obtain waivers and develop safety protocols that would allow broader use during wildfires. As those barriers fall, drones are likely to become a more common sight at fire scenes.

The Aspen Fire Protection District's commitment to Seneca's drones suggests that at least some fire departments see enough promise to invest. A $5 million contract over five years is not trivial, but it may be justified if drones help prevent even one large structure fire. For CAL FIRE, the potential savings could be much larger, given the billions of dollars spent annually on wildfire suppression and property damage.

CAL FIRE has not signed up any firefighting drones just yet, but it represents another large potential customer. The California fire agency already operates the world's largest aerial firefighting fleet with more than 70 crewed fixed-wing aircraft and helicopters, along with using AI-powered camera networks and supporting development of the FireSat constellation designed to spot wildfires from space even faster.

FireSat, the satellite constellation CAL FIRE is helping develop, is designed to detect fires from space in near-real-time, offering a global view of fire starts. If such detection tools are paired with rapid-response drones, the combination could transform how agencies allocate firefighting resources. Rather than dispatching heavy aircraft to every report of smoke, crews might first send a handful of small drones to assess and attack the fire while larger assets are prepared.

The drive to develop firefighting drones is part of a broader effort to adapt wildfire management to a changing climate. The United States has seen record-breaking fire seasons in recent years, with millions of acres burning and whole communities evacuated. Fire experts agree that no single technology will solve the problem, but a diversified toolkit will be needed. Drones, sensors, satellites, and AI are all expected to play a role in the coming decades.

In the meantime, companies like Seneca and Dryad Networks are positioning themselves for what could be a major new market. Governments at the local, state, and federal levels are increasingly looking for innovative ways to reduce the cost and destruction of wildfires. If autonomous drones prove their worth in real-world deployments, these early tests may be remembered as the starting point of a new firefighting era.

Source: Ars Technica News