Calepin des entreprises international 2026 VA.pdf — page 85

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HEMERIA
Business trends
	
 Hemeria posted revenues of €70 million during fiscal year 2024-2025 (ended June 30th), up 9.9% year-on-
year, with approximately 95% of this revenue generated in France. The group benefits from a certain degree of 
recurrence thanks to long-term contracts in the space sector with Airbus, ArianeGroup, Beyond Gravity, OHB 
and Thales Alenia Space. Growth is also driven by new contracts won for Hyperion multi-sensor trajectory 
tracking turrets for the French defence procurement agency (DGA), satellite platforms (e.g. for Kinéis) and 
space equipment (e.g. for the Idéfix rover developed by the French and German space agencies).
	
 In October 2024, the group acquired a 70% stake in Astareon, a subsidiary of ONERA (French National Office 
for Aerospace Studies and Research) dedicated to the surveillance of space objects in low orbit. ONERA will 
initially retain a 30% stake in the company, renamed Hemeria Surveillance, before Hemeria gradually takes 
full control of the capital. With this acquisition, the group took over the Graves radar and the Medoc passive 
ground reception station. The data collected is then resold to institutional and private customers.
	
 In June 2025, Hemeria signed a letter of intent with the Canadian company ABB at the Paris Air Show to 
cooperate on solutions dedicated to low-orbit space surveillance. In particular, ABB’s payloads could be 
integrated into Hemeria’s satellite platforms.
Home market
	
 In October 2023, the French Space Agency (CNES) awarded a €10 million contract to the Hemeria 
Airship subsidiary for the production of 90 helium-filled stratospheric balloons, to be delivered between 
September 2025 and the end of 2027. Designed to collect data at altitudes of between 15 and 40 km, these 
balloons will be used for the CNES’ Stratéole-2 mission to study atmospheric phenomena at the equator.
	
 The DGA-EM has entrusted Hemeria with the design, production and MRO of its new trajectory tracking 
systems. In 2025, a trajectory tracking turret was installed on the Monge test and measurement building (BEM) 
and the first turrets were delivered to the DGA’s test centres.
	
 Hemeria is in charge of the YODA (Yeux en Orbite pour un Démonstrateur Agile) project, notified by CNES 
on behalf of the DGA, whose aim is to design and supply a demonstrator of two patrol nanosatellites that will 
operate in geostationary orbit to protect French military satellites from suspicious or even hostile manoeuvres. 
They will be operated by the French Space Command.
Export markets
	
 Hemeria has several international clients, such as Beyond Gravity, Israel Aerospace Industries and OHB. 
In addition to Europe, the group is targeting countries in the Middle East, Asia and Africa.
	
 The European Space Agency (ESA) awarded Hemeria a €9.8 million contract in November 2024 to 
supply space data on the ionosphere as part of the Space Weather programme, which aims to provide 
satellite operators with information on the potentially harmful effects of space weather on their navigation 
and communication systems. The group will provide its HP-IoT satellite platform, into which it will integrate 
electronic systems (radiation monitors, X-ray monitors, Langmuir probes, GNSS receivers, etc.). The satellite 
is scheduled for launch in 2026.
Technology and Innovation
	
 Hemeria Airship and CNES (project owner) successfully completed the first flight of the envelope alone, 
without manoeuvrability, in the stratosphere (at an altitude of 22 km) of the BalMan maneuvering stratospheric 
balloon from the Guiana Space Centre in Kourou in October 2024. A second flight is scheduled for late 2025 to 
test the platform with manoeuvrability and payload capacity, including several Hemeria subsystems (on-board 
computer, piloting interface, etc.). The objective for BalMan is to remain above a geographical area of interest, 
at an altitude of several tens of kilometres, for longer than a drifting balloon, aircraft or drone can do.
STRATEGIC HIGHLIGHTS