Mission typeCommunications
Mission duration12 years (planned)
Spacecraft properties
Spacecraft typeAll-electric propulsion
Launch mass1700 kg
Start of mission
Launch date2021 (planned)
RocketFalcon 9
Launch siteCape Canaveral,
Orbital parameters
Reference systemGeocentric orbit
RegimeMedium Earth orbit
Altitude8,000 km (5,000 mi)

O3b mPOWER is a communications satellite system currently under construction and due to begin launching in late 2021.[1] Owned and operated by SES, O3b mPOWER initially comprises 11 high-throughput and low-latency satellites in a medium Earth orbit (MEO), along with ground infrastructure and intelligent software, to provide multiple terabits of global broadband connectivity for applications including cellular backhaul to remote rural locations and simultaneous international IP trunking.[2][3][4]

The O3b mPOWER satellites use fully-shapable and steerable spot beams that can be shifted and scaled in real-time to suit individual users, and will join SES' existing constellation of 20 first-generation O3b satellites in MEO and operate in conjunction with them and the SES fleet of geostationary satellites.[5]


The O3b mPOWER satellites are based on Boeing's multi-orbit BSS-702X satellite bus with an all-electric propulsion system and a payload that can be reprogrammed from the ground to reallocate resources "on the fly".[6][5]

The electronically steered phased array antennas can provide up to 5000 spot beams per satellite each shaped and pointed as required to specifically distribute power and bandwidth to individual user's terminals and, using the full Ka-band spectrum, enable uncontended speeds from 50 Mbit/s up to 10 Gbit/s.[3][7]

With frequency reuse, each O3b mPOWER satellite can deliver hundreds of gigabits in capacity, with multi-terabit capabilities across the full constellation.[2] SES' Adaptive Resource Control (ARC) software and digital payload processing systems synchronise space and ground system resources to electronically control routing, power levels, throughput, and frequency allocation dynamically, in real time.[3][8][9]


From MEO, the O3b mPOWER satellites can deliver high-bandwidth connectivity between latitudes 50° N and 50° S (covering 96% of the global population) to mobile and/or remote terminals of 0.3 m to 5.5 m, and is expected to find application in the following markets:[3][10]

  • Mobility: cruise, commercial shipping, aero
  • Telecom: telco, mobile network operators, cloud providers
  • Government: military, government agencies, non-governmental organisations
  • Enterprise: oil and gas, mining

Proposed additional satellites operating in a second medium earth orbit at an inclination of 70° would give near-complete global coverage.[5]


In September 2017, SES announced Boeing would build seven "super-powered" medium earth orbit satellites for launch in 2021 to provide flexible and scalable, low-latency satellite-based networks with terabits of throughput, hugely expanding the capacity of the existing constellation of 12 (now 20) first-generation O3b satellites.[11][12]

In March 2018, SES announced partnerships with Alcan Systems, Isotropic Systems and Viasat to develop compact, high-throughput user terminals for the O3b mPOWER system.[13]

In September 2019, SES announced it had partnered with satellite payload and network management systems developer, Kythera Space Solutions to develop the ARC (Adaptive Resource Control) software to enable the dynamic control and optimisation of power, throughput, beams and frequency allocation on O3b mPOWER and other future high-throughput satellites (such as the geostationary SES-17 due to launch in 2021) and their networks.[14]

Also in September 2019, SpaceX was contracted to launch the first seven O3b mPOWER satellites using Falcon 9 rockets with two launches of four and three satellites planned for 2021.[15]

In February 2020, Princess Cruises announced a partnership with SES for early access to the O3b mPOWER system, using a hybrid network of both MEO and geostationary satellites to provide connectivity to its fleet at sea.[16] Also in February 2020, Orange, a user of the first generation O3b system in Africa and the Middle East since 2017, announced it would be the first telco to adopt the O3b mPOWER system, to extend its consumer and business broadband services in Africa, providing connectivity to remote locations, starting in the Central African Republic.[17]

In August 2020, the order for an additional four O3b mPOWER satellites, also from Boeing, was announced. These satellites will be more powerful than the original seven, increasing the total throughput of the entire O3b mPOWER constellation by 90%. The expected launch pattern for the whole O3b mPOWER constellation was also changed, with SpaceX contracted to provide two further launches on Falcon 9 rockets, each rocket carrying a maximum of three satellites, and the first three satellites expected to launch late in 2021, six more on two launches in 2022, and the final two in 2024.[4][18]

In September 2020, SES and Microsoft announced that SES was the medium Earth orbit connectivity partner for the Microsoft Azure Orbital ground station service that enables network operators to control their satellite operations and capacity from within the Azure cloud computing service. Under their agreement, SES and Microsoft will jointly invest in Azure Orbital ground stations for the MEO and Earth Observation segments, initially in the United States, which will be installed and managed by SES. Also, satellite telemetry, tracking and control systems and data ground stations for the O3b mPOWER satellites will be located with Microsoft's Azure edge sites to provide O3b mPOWER customers with "one-hop" access to Azure cloud services.[19][20]

In November 2020, SES announced that Gilat and ST Engineering iDirect are developing the modem platforms and ground infrastructure for the O3b mPOWER communications system.[21] In December 2020, SES agreed with Australian telco, Pivotel Group Pty to build a new ground station at Pivotel's teleport in Dubbo, New South Wales to use the O3b mPOWER system to provide high-speed, low-latency connectivity across Australia, New Zealand and the Pacific Islands.[22]

In February 2021, SES announced that four of the five top cruise companies have contracted connectivity services using the O3b mPOWER system ahead of the satellites' launch and with the majority extending beyond 2025.[23]

In August 2021, Microsoft became the first cloud computing provider customer for the O3b satellite system, with Microsoft buying managed satellite connectivity services from SES for the Microsoft Azure cloud service. Microsoft is initially using the existing first generation O3b satellites, before upgrading to the faster broadband speeds from O3b mPOWER satellites when they come into operation in 2022.[24]

See also


  1. ^ Rainbow, Jason (17 August 2021). "O3b mPOWER get first cloud customer, on track for launch even as COVID-19 issues loom". SpaceNews. Retrieved 18 August 2021.
  2. ^ a b SES building a 10-terabit O3b mPower constellation, SpaceNews, 11 September 2017, Accessed 25 August 2020
  3. ^ a b c d "Boeing to Build Four Additional 702X Satellites for SES's O3b mPOWER Fleet" (Press release). Boeing. 7 August 2020. Retrieved 26 August 2020.
  4. ^ a b SES orders four more O3b mPower satellites from Boeing, SpaceNews, 7 August 2020, Accessed 26 August 2020
  5. ^ a b c O3b mPower 1, ..., 11, Gunter's Space Page, Accessed 26 August 2020
  6. ^ 702X: The more cost-effective software defined satellite , Boeing, Accessed 27 August 2020
  7. ^ "Boeing to Design and Build Seven Medium Earth Orbit Satellites for SES" (Press release). Boeing. 11 September 2017. Retrieved 27 August 2020.
  8. ^ Space Systems, SES, Accessed 29 March 2021
  9. ^ SES to Extend O3b mPower Capabilities With Software Innovation, Broadband World News, 5 September 2019, Accessed 18 September 2020
  10. ^ O3b mPOWER Press Factsheet, SES, August 2020, Accessed 26 August 2020
  11. ^ "SES opens new era in global connectivity with O3b mPOWER" (Press release). SES. 11 September 2017. Retrieved 27 August 2020.
  12. ^ SES orders seven satellites from Boeing to help meet growing broadband demand, Spaceflight Now, 12 September 2017, Accessed 20 August 2020
  13. ^ "SES Networks Announces Partnerships for Groundbreaking O3b mPOWER Customer Edge Terminals" (Press release). SES. 8 March 2018. Retrieved 18 September 2020.
  14. ^ "SES to Enhance and Expand O3b mPOWER System Capabilities with Dynamic Software Innovation" (Press release). SES. 5 September 2019. Retrieved 31 March 2021.
  15. ^ SpaceX to launch SES's O3b mPOWER constellation on two Falcon 9 rockets, SpaceNews, 9 September 2020, Accessed 27 August 2020
  16. ^ Princess Cruises extends partnership with SES for O3b mPOWER network, Satellite Pro Middle East, 4 February 2020, Accessed 27 August 2020
  17. ^ African Teleco Orange Adopts SES's O3b mPOWER, Satellite Today, 27 February 2020, Accessed 28 August 2020
  18. ^ SES taps SpaceX for two additional Falcon 9 launches, SpaceNews, 20 August 2020, Accessed 26 August 2020
  19. ^ Introducing Azure Orbital: Process satellite data at cloud-scale, Microsoft, 22 September 2020, Accessed 28 October 2020
  20. ^ "SES Becomes Microsoft Azure Orbital Founding Connectivity Partner" (Press release). 22 September 2020. Retrieved 30 October 2020.
  21. ^ "SES Expands O3b mPOWER Technology Ecosystem with Modem Platform Partnerships" (Press release). 3 November 2020. Retrieved 1 January 2021.
  22. ^ Dubbo Gateway to boost regional APAC connectivity, Capacity Media, 16 December 2020, Accessed 31 January 2021
  23. ^ SES Networks Transforms Cruise Market Again as Leading Cruise Companies Choose O3b mPOWER for Enhanced Connected Guest Experiences Business Wire. 23 February 2021. Accessed 23 February 2021
  24. ^ O3b mPOWER get first cloud customer, on track for launch even as COVID-19 issues loom SpaceNews. 17 August 2021. Accessed 1 September 2021