Space & Satellites
SES Launches 9th and 10th O3b mPOWER Satellites Enhancing Global Broadband
SES expands its O3b mPOWER constellation with two new satellites, improving global broadband coverage and capacity across key sectors.
The successful launch of two additional O3b mPOWER satellites by Boeing marks a significant milestone in the evolution of global satellite communications. Operated by SES, the O3b mPOWER constellation aims to deliver high-throughput, low-latency broadband services across sectors including maritime, Aviation, government, and enterprise. With the July 22, 2025 launch, SES now has 10 operational satellites in medium Earth orbit (MEO), further strengthening its multi-orbit strategy.
This expansion is not just a technical achievement but a strategic move in the rapidly growing satellite internet market. The O3b mPOWER system, developed in collaboration with Boeing and launched via SpaceX Falcon 9 rockets, offers a unique blend of performance, coverage, and resilience. As demand for reliable global connectivity surges, particularly in underserved regions and mobile platforms, the role of MEO constellations becomes increasingly vital.
The O3b mPOWER system represents SES’s second-generation MEO satellite network, designed to build upon the success of its original O3b constellation. Each satellite in the mPOWER series incorporates advanced digital payloads and xenon-based electric propulsion, allowing for dynamic bandwidth allocation and efficient orbital maneuvering.
The latest launch, conducted on July 22, 2025, at 5:12 p.m. EDT from Cape Canaveral Space Force Station, deployed the 9th and 10th satellites into space. The satellites separated from the SpaceX Falcon 9 rocket approximately two hours after liftoff and are currently undergoing health checks. They are expected to reach their designated MEO positions, approximately 8,000 km above Earth, within 130 days using their onboard propulsion systems.
Once operational, these satellites will join the existing constellation to cover nearly 95% of the global population, particularly between latitudes 50°N and 50°S. With each new satellite, SES increases the network’s overall throughput, resilience, and flexibility. The full constellation, comprising 13 satellites by 2027, is expected to triple the system’s capacity.
One of the standout features of the O3b mPOWER satellites is their use of software-defined payloads. These enable the creation of up to 5,000 digitally formed, steerable beams per satellite. This capability allows SES to dynamically allocate bandwidth in real time based on user demand and geographic location.
This beamforming technology ensures consistent service quality, even in high-demand scenarios such as cruise ships, military operations, or remote industrial sites. The flexibility of the system also reduces the need for over-provisioning and enhances operational efficiency.
According to Boeing, each satellite beyond the initial six significantly boosts the constellation’s capacity and performance. This modular scalability is a result of refined production techniques and sustained investment in cutting-edge aerospace technologies. “Each additional satellite beyond the first six boosts capacity, performance, and resilience.” – Michelle Parker, VP, Boeing Space Mission Systems
The satellites were launched aboard a SpaceX Falcon 9 rocket, known for its reusability and reliability. The use of Falcon 9 aligns with SES’s strategic goal to minimize launch costs while maintaining high deployment success rates.
Post-launch, the satellites utilize xenon-based electric propulsion systems to gradually ascend to their operational orbit. This method is energy-efficient and allows for precise orbital adjustments.
The propulsion system, combined with autonomous onboard navigation, ensures that each satellite can reach and maintain its orbital slot with minimal ground intervention. This autonomy enhances the constellation’s resilience and reduces operational overhead.
Since entering commercial service in April 2024, the O3b mPOWER constellation has been steadily expanding. The 7th and 8th satellites were launched in December 2024 and began delivering services in June 2025. The remaining three satellites are scheduled for launch in 2026, completing the 13-satellite constellation.
SES has also made significant Investments in its ground infrastructure. As of mid-2025, the company operates 12 global gateways, five of which are co-located with Microsoft Azure data centers. This integration allows for seamless, low-latency cloud access, enabling applications such as remote healthcare, cloud gaming, and real-time analytics.
In terms of end-user applications, SES reports that the O3b mPOWER system is already serving a diverse client base, including cruise lines, Airlines, telecom operators, and government agencies. The system’s ability to deliver fiber-like connectivity in remote and mobile environments is a key differentiator in the market.
The O3b mPOWER system is also gaining traction in the defense sector. In 2023, NATO awarded SES a contract worth up to $270 million to provide secure communications using the constellation. The governments of Luxembourg and the United States are also leveraging the network for military and strategic communications.
These Partnerships underscore the system’s reliability and security, which are critical for mission-critical operations. The ability to deliver high-throughput, low-latency communications in contested or remote environments gives military users a tactical advantage. SES and Boeing are also applying lessons from the O3b mPOWER program to future defense-focused satellite systems, including the U.S. Space Force’s Evolved Strategic SATCOM (ESS) initiative.
SES’s collaboration with Microsoft Azure represents a broader trend toward integrating satellite networks with cloud services. This synergy enables enterprises to run data-intensive applications in real time, regardless of geographic constraints.
For example, oil rigs, remote mining operations, and maritime vessels can now access cloud-based analytics and AI tools without latency-induced performance issues. This integration is a game-changer for industries that operate in connectivity-challenged environments.
SES is also working with telecom partners like Orange to extend broadband coverage in underserved regions, particularly in Africa. These initiatives are aligned with global efforts to bridge the digital divide and promote inclusive digital transformation.
“Over the past year, our O3b mPOWER services have been transforming industries and empowering our key customers.” – Adel Al-Saleh, CEO of SES
The satellite internet market is experiencing rapid growth, with projections estimating a market value between $25.67 billion and $33.44 billion by 2030. This expansion is fueled by increasing demand in rural areas, mobile platforms, and government sectors.
O3b mPOWER’s MEO architecture offers a strategic middle ground between LEO and GEO systems. While LEO constellations like SpaceX’s Starlink provide low latency, they require thousands of satellites and complex handoffs. In contrast, MEO systems like O3b mPOWER achieve broader coverage with fewer satellites and maintain a latency profile suitable for most real-time applications.
As of July 2025, Starlink has launched over 9,000 satellites, while Amazon’s Project Kuiper has 54 satellites in orbit. Despite this competition, O3b mPOWER’s emphasis on quality of service, reliability, and cloud integration positions it as a strong contender in the premium connectivity segment.
The successful deployment of the 9th and 10th O3b mPOWER satellites reinforces SES’s commitment to delivering high-performance, scalable, and secure satellite connectivity. With 10 satellites now in orbit and three more to follow, SES is well on its way to completing a constellation that could redefine global broadband access. Looking ahead, the integration of satellite networks with cloud infrastructure, coupled with growing demand from enterprise and defense sectors, suggests a promising future for MEO-based systems. As the digital economy expands, the role of resilient, high-capacity satellite networks like O3b mPOWER will only become more critical.
What is O3b mPOWER? Who builds the O3b mPOWER satellites? What sectors benefit from O3b mPOWER? How does O3b mPOWER differ from LEO constellations? When will the full constellation be completed?
Introduction: Expanding the Frontiers of Satellite Connectivity
O3b mPOWER: Technical Advancements and Launch Details
Beamforming and Dynamic Capacity Allocation
Launch Vehicle and Propulsion System
Recent Developments and Operational Expansion
Military and Government Adoption
Cloud and Enterprise Integration
Global Context and Market Implications
Conclusion
FAQ
O3b mPOWER is a medium Earth orbit satellite constellation operated by SES, designed to deliver high-throughput, low-latency broadband services globally.
The satellites are built by Boeing and launched using SpaceX Falcon 9 rockets.
The system serves mobility (aviation, maritime), government, telecom, and enterprise sectors, offering near-fiber-like connectivity in remote and mobile environments.
Unlike LEO systems that require thousands of satellites, O3b mPOWER uses fewer satellites in MEO, offering broader coverage and reliable performance with lower latency than GEO systems.
The full 13-satellite constellation is expected to be operational by 2027.
Sources
Photo Credit: Boeing