Less bandwidth requirement as SSB requires a BW of fm. This will allow more number of signals to be transmitted in the same frequency range.
Lots of power saving. This is due to the transmission of only one sideband component. At 100% modulation, the percent power saving is 83.33%
Reduced interference of noise. This is due to the reduced bandwidth. As the bandwidth increases, the amount of noise added to the signal will increase.
It is used in the applications where the power saving and low bandwidth requirements are important. The application areas are land and air mobile communication, telemetry, military communications, navigation and amateur radio. Many of these applications are point to point communication applications.