The Intelsat 21 satellite is based on the BSSI 702MP mid-level power platform.
Designed to provide 15 or more years of satellite service, the Intelsat 21 spacecraft will carry 24 C-band transponders for coverage over the western hemisphere and 36 Ku-band transponders with Brazil and mobility beams.
IS-21 vital statistics:
Platform: Boeing Satellite Systems 702MP
Dimensions, in orbit:
H, 6.9 m
W, antennas: 9.25 m
L, solar arrays: 36.85 m
Mass at Launch: 5,984 kilograms (13,192 lbs.)
The payload is powered by two solar wings, with four panels of ultra triple-junction gallium arsenide solar cells.
Power at end-of-life: 11.8 kW
Operational Lifetime: 15+ years