Thales Alenia Space has signed a Letter of Agreement with Eutelsat covering governmental communications payloads for all 330 low-Earth-orbit satellites in Europe’s IRIS² secure-connectivity programme, giving the project a defined industrial work package worth approximately €500 million.
The agreement covers 66 Ka-band-only spacecraft and 264 dual Ku/Ka-band satellites. Thales Alenia Space says the award is one tranche within an overall IRIS² contract for the company that is expected to exceed €3 billion as the programme moves through successive production and deployment stages.
IRIS² is being developed as a multi-orbit European communications system with 348 satellites in its current configuration: 330 in low Earth orbit at around 1,200 km and 18 in medium Earth orbit at around 8,000 km. The low-orbit fleet is intended to provide secure governmental communications alongside commercial business connectivity, with optical inter-satellite links connecting spacecraft across the network.
The first 66 low-orbit satellites form Layer One and will operate solely in Ka-band. Thales Alenia Space will develop the payloads for that layer, while Airbus Defence and Space will provide the platforms. Launches are scheduled to begin in 2029.
Layer Two comprises the remaining 264 low-orbit satellites, which will use both Ku- and Ka-band communications. Thales Alenia Space is responsible for their governmental payloads, while Aerospacelab will develop the platforms, with launch activity due to start in 2030.
The distinction between platform and payload matters because the latest agreement concerns the secure communications equipment carried by the spacecraft rather than complete satellite manufacture. Payload development covers the antennas, radio-frequency hardware, digital processing, routing, control, and security functions that allow the satellites to handle traffic once in orbit.
IRIS² is also intended to support native 5G connectivity, in-orbit traffic routing, active interference management, and end-to-end secure communications. Thales Alenia Space says a dedicated chipset will be developed for the programme’s software-defined antennas, adding a semiconductor and digital-electronics requirement to an already large production task.
Hervé Derrey, president and chief executive of Thales Alenia Space, said: “IRIS² will represent the pinnacle of telecommunications constellations.”
That claim is promotional, but the manufacturing challenge beneath it is measurable. Producing payload hardware for 330 spacecraft requires designs that can be manufactured repeatedly, tested at production pace, and kept under configuration control across multiple years. Constellation economics leave less room for bespoke engineering on every unit than traditional satellite programmes built around relatively small numbers of large spacecraft.
The supply chain therefore has to behave more like serial manufacturing while retaining aerospace levels of traceability and qualification. Antennas, processors, radio-frequency components, power electronics, optical links, harnesses, thermal hardware, software, and test systems must arrive in compatible volumes and maintain performance across long production runs.
The August implementation agreement between the European Commission and the SpaceRISE consortium moved IRIS² from planning into full-scale deployment and confirmed the wider programme timetable. The new Thales agreement is a more granular industrial step, assigning responsibility for a major payload package rather than describing the constellation at programme level.
That difference is important because Industrial News covered the deployment transition in August. The latest development is not another announcement that IRIS² exists; it commits roughly €500 million of work to the governmental communications payloads across the complete 330-satellite low-orbit fleet.
Manufacturing at that scale will also test Europe’s ability to localise more of the space-electronics supply chain. Sovereign connectivity depends on more than owning the final constellation: it requires access to qualified electronic components, secure processors, antenna technology, software, specialist materials, and production capacity that cannot be replaced quickly if suppliers fall behind.
Software-defined payloads add flexibility after launch but increase the burden before it. Hardware, firmware, signal-processing software, cybersecurity controls, and ground interfaces all have to be validated together, while production test systems must distinguish genuine hardware faults from configuration or software problems without slowing output.
The current schedule leaves roughly three years before the first Layer One launches. That is enough time for detailed engineering and industrialisation, but not much spare capacity for a programme involving hundreds of spacecraft and several industrial partners.
The €500 million tranche therefore marks the point at which part of IRIS² becomes a repeatable manufacturing obligation rather than a strategic ambition. Europe has defined the constellation and signed its implementation framework; Thales Alenia Space now has to turn secure communications architecture into payload hardware at a rate compatible with launches beginning in 2029.
