SSL launched SIRIUS FM-5 in 2009. It was the first geostationary satellite in the Sirius Satellite Radio constellation, which already included three SSL-built satellites in highly elliptical inclined orbits (HEIOs). SIRIUS FM-5 is the highest-powered satellite in the SIRIUS fleet, with end-of-life power capability of nearly 20 kilowatts. The satellite supplements the existing constellation in providing radio service to the continental U.S. as well as Canada.