THD-Sat

Updated on January 17, 2025

Satellite fast-broadband Internet
Vue d’artiste d’un satellite utilisant les technologies du projet THD-Sat
Artist’s view of a satellite employing THD-Sat technologies © CNES/ill./DUCROS David, 2012

THD-Sat is a research and development project led by CNES initiated in 2011. Its aim is to deliver the technology building blocks required to manufacture satellite systems capable of offering Internet fast-broadband services at prices and connection speeds equivalent to fibre optic.

Key information

MissionDeliver satellite fast-broadband Internet services
DomainTelecoms, navigation
Start date2011
PartnersThales Alenia Space, Thales AVS, STMicroelectronics, EASii IC
WhereSatellites in geostationary orbit, CDC, CNES
LifetimeIndefinite
StatusIn development

Key figures

  • 3 lines of research and development
  • 200 to 1,000 Mbps expected download speeds
  • 20 to 50 Mbps expected upload speeds
  • €70 million budget envelope

 

Key milestones

  • 2018: First complete THD-Sat system finalized
  • February 2014: Second budget envelope allocated
  • December 2011: Start of THD-Sat project and first budget envelope

 

Project in brief

The THD-Sat satellite fast-broadband project is part of France’s plan to bring fast broadband to every household in the country, using satellites to complement fibre-optic networks in less-populated areas. Satellite fast broadband will deliver download data rates of 200 Mbps for private citizens (500 Mbps for professionals) and 20 to 50 Mbps upload. THD-Sat will establish a national industry base capable of developing fast-broadband Internet solutions for telecommunications operators.

THD-Sat officially kicked off in December 2011 with a first funding envelope of €40 million from the digital economy budget line of the government’s PIA future investment programme. A second envelope of €30 million was allocated to the project in February 2014. Most technology developments were completed in 2018 and the first THD-Sat system employing them was launched in 2020. The first complete THD-Sat system, comprising satellite and ground segment building blocks, was deployed before end 2022.

 

CNES’s role

THD-Sat is a research and development project led by CNES since 2011.

 

Contacts

THD-Sat Project Leader
Valérie Foix
E-mail: valerie.foix at cnes.fr

Head of Telecoms & Navigation
Jean-Philippe Taisant
E-mail: jean-philippe.taisant at cnes.fr