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"An all electric propulsion satellite from Boeing is a world-first and it has started operations. Boeing announced it earlier this month. The satellite started service on August 31 —that is, the date marks the time when the satellite became fully operational.
Boeing built it for Bermuda-based ABS, which is a global satellite operator. The latter company said it has offices and executives in the United States, Dubai, South Africa, Germany, Philippines, Indonesia, Malaysia, Singapore and Hong Kong. The satellite expands ABS' communications services in the Americas, Europe, the Middle East and Africa.
The satellite involved is called the ABS-3A, a 702SP (small platform) satellite. The spacecraft features an all-electric xenon-ion propulsion system. It has enough of the inert, non-hazardous element xenon to extend the satellite's operations beyond the expected spacecraft design life of 15 years, said Boeing. Ryan Whitwam in ExtremeTech said that ABS-3A needs only 11 pounds (5kg) of xenon gas per year to maintain station-keeping, meaning it can remain operational much longer than a similar satellite with conventional thrusters." - TechExplore
"By 2005, Boeing was offering a Xenon Ion Propulsion System (XIPS) option for the 702 satellite system. XIPS is 10 times more efficient than conventional liquid fuel systems. On a XIPS equipped 702 satellite, four 25 cm (9.8 in) thrusters provide economical station-keeping, needing only 5 kg (11 lb) of fuel per year, "a fraction of what bipropellant or arcjet systems consume". An XIPS-equipped satellite can be used for final orbit insertion, conserving even more payload mass, as compared to using a traditional on-board liquid apogee engine. - Wikipedia