Overview
SES, headquartered in Luxembourg, is one of the world's largest commercial satellite operators by revenue and fleet size. The company operates a fleet of over 50 geostationary satellites providing video distribution and data services across Europe, Africa, and Asia-Pacific, plus the O3b and O3b mPOWER medium Earth orbit (MEO) constellations for low-latency enterprise broadband. Following its 2024 acquisition of Intelsat, SES became the largest GEO satellite operator in the world with a combined fleet exceeding 100 satellites.
GEO Fleet
SES's Astra series satellites in geostationary orbit deliver direct-to-home television to hundreds of millions of households. The SES-Astra position at 19.2°E is one of the most commercially significant orbital slots in the world, broadcasting to over 118 million homes in Europe. The company also provides government and military communications through its GovSat subsidiary, and enterprise connectivity for telecoms, maritime, and aviation customers.
O3b mPOWER
O3b (short for "Other 3 Billion" — the world's unconnected population) is SES's MEO constellation at approximately 8,000 km altitude. The next-generation O3b mPOWER system, built by Boeing, features 11 high-throughput satellites with thousands of electronically steerable beams, delivering terabit-class capacity per satellite. First launched on Falcon 9 in late 2022, mPOWER offers fibre-like latency (~150 ms) at broadband speeds — significantly lower latency than traditional GEO (~600 ms) while covering a wider area per satellite than LEO constellations.
C-Band Transition & Intelsat Merger
SES received approximately $4 billion from the FCC's C-band spectrum auction, which repurposed satellite spectrum for 5G terrestrial wireless in the United States. This windfall accelerated investment in mPOWER and enabled the acquisition of Intelsat in 2024, creating the world's largest commercial GEO satellite operator with over 100 satellites. The combined entity leverages SES's MEO leadership and Intelsat's extensive GEO and ground infrastructure, while targeting cost synergies from consolidating two historically competing organisations.
Market Position
SES competes with Viasat, Telesat, and Eutelsat in traditional GEO video and connectivity markets. In the MEO/low-latency segment, O3b mPOWER competes with OneWeb and Starlink for enterprise, maritime, and government customers. SES's multi-orbit strategy — combining GEO for broadcast and wide-area coverage with MEO for low-latency broadband — is a distinctive positioning in an industry increasingly dominated by LEO mega-constellations.