Pedro Alfaro, Zelenza’s CEO, said the group generated €120 million in revenue in 2025, including €20 million from its Defense and Security division, about one-sixth of the total. He said most defense sales were research and development (R&D) projects, pilots or prototypes rather than recurring contracts. That mix puts Zelenza’s expansion into uncrewed systems in context: the defense business is growing from a group still rooted in information and communications technology (ICT) services.
How Zelenza is building its defense portfolio
The four units Zelenza has named for its defense business are ZelenzaTech, for command-and-control software; Swarming Technologies & Solutions, for drone swarms; Seadrone, for maritime platforms; and Simfor, for simulation. Zelenza announced its acquisition of Seadrone in 2023.
Alfaro described a model in which Zelenza takes a majority stake in companies it brings into the group while their founders retain a stake and control research and development until a product is defined. Zelenza then contributes financing, industrialization and access to markets and customers. The approach connects specialist product teams with the group’s capacity to move projects toward production and sales.
What the projects include
Alfaro described SIMACODA as software for assigning missions among aerial, maritime and land-based uncrewed vehicles. He also attributed task reassignment during missions and collision avoidance to the system.
A reported €480,623 contract for Spain’s CETEDEX test center covers four uncrewed aircraft: three multicopters and one fixed-wing aircraft that can take off and land vertically (VTOL), plus a mobile ground-control station. The procurement specification calls for the aircraft to coordinate as a distributed, non-hierarchical system and organize without intervention from the ground station.
Zelenza announced on December 22, 2025, that it had been selected through CDTI for a maritime-drone development for the Guardia Civil, with Seadrone and HI Iberia as collaborators. The company described a planned package that includes an uncrewed surface vessel for remote patrol and interception, a deployable stealth vessel, intelligence, surveillance and reconnaissance (ISR) and interception platforms, immobilization devices, command-and-control systems, simulators and swarming technology.
Seadrone’s SEAD 23 in manufacturer specifications
Seadrone describes the SEAD 23 as an uncrewed surface vessel with a diesel engine and water jet. The manufacturer lists it at 6.95 meters (22.8 feet) long, with a maximum beam of 2.32 meters (7.6 feet) and a depth of 1.20 meters (3.9 feet). Its listed power is 250 metric horsepower, about 247 U.S. horsepower, and its listed maximum speed is 33 knots, about 38 mph.
The growth target and the pressure on ICT services
Alfaro said artificial intelligence and software agents could put pressure on traditional ICT services by reducing staffing and revenue. He presented defense as a growth bet alongside that established business.
In an interview published October 25, 2026, Alfaro forecast about €200 million in annual defense revenue within five years. That target is roughly ten times the €20 million the division reportedly generated in 2025, when most of its sales were still R&D projects, pilots and prototypes rather than recurring contracts.
