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GSAT-20 is a communication satellite jointly being developed by Indian Space Research Organisation Satellite Centre and Liquid Propulsion Systems Centre[3] and will be launched by ISRO. GSAT-20 will be a continuation of GSAT series of communication satellites. The satellite is intended to add data transmission capacity to the communication infrastructure required by Smart Cities Mission of India.

Mission typeCommunication
Mission duration15 years (Estimated)
Spacecraft properties
BusI-3K Bus
ManufacturerISRO Satellite Centre
Space Applications Centre
Power2 solar array batteries
Start of mission
Launch dateTBD
RocketGSLV Mk III[2]
Launch siteSatish Dhawan SLP
Orbital parameters
Reference systemGeocentric
Longitude55° East[citation needed]

It will be the first fully Electric Propulsion/EP enabled satellite which can be five to six times more efficient than chemical-based propulsion.[3] It will be the first ISRO made satellite to move from Geostationary transfer orbit to Geosynchronous orbit using Electric Propulsion.[4]


The satellite features a Ka-band high-throughput communications payload with 70 Gbit/s[5] throughput utilizing 40 beams.[6] Each beam will have 2 polarisations, effectively making them 80 beams.[7]


The satellite will be launched by GSLV Mk III in September 2019.[8][2]

See alsoEdit


  1. ^ "Annual Report 2017-18, Department of Space". Department of Space, Government of India. Retrieved 13 February 2018.
  2. ^ a b "Annual Report 2018" (PDF). ISRO. Retrieved 28 May 2019.
  3. ^ a b D.S, Madhumathi (May 1, 2017). "GSAT-9 heralds cost-saving electric propulsion". The Hindu. Bengaluru. The Hindu. Retrieved May 27, 2017.
  4. ^ RAMACHANDRAN, R. (June 26, 2017). "ISRO's Mk III Launched a Little-Known Instrument Called GRASP – This Is What It Does". The Wire. Bengaluru. The Wire. Retrieved June 26, 2017.
  5. ^ Nair, Avinash (May 17, 2017). "ISRO's GSAT-trio to usher in high-speed internet era". The Indian Express. Ahmedabad. Retrieved May 27, 2017.
  6. ^ "GSAT-20".
  7. ^ Vasudeva, Akshay (May 22, 2017). "India to enter high-speed internet era with Isro's new satellites". India:
  8. ^ "Coming soon, higher internet speeds". @businessline. Retrieved 2018-11-16.