Since 1996, Thales Alenia Space Belgium (ETCA) designs, develops and produces Power Processing Unit (PPU) to supply Hall Effect Thrusters: SPT-100 from Fakel and PPS1350-G from Snecma. The first qualification model, developed for the 50V bus Stentor program, has supplied during 8900 hours an SPT-100 thruster in a vacuum chamber simulating space environment. Qualified for the Spacebus 4000 platform, with a 100V regulated bus, the SB4000 PPU and Filter Unit EQM have cumulated 6300 hours ground operation with a PPS1350-G thruster. Twenty three PPU flight models were delivered for the Stentor, Astra-1K, Smart-1, Intelsat, Inmarsat, Eutelsat, Yahsat and DirecTV satellites. In October 2005, the Smart-1 spacecraft reached the Moon after 4958 hours of cumulated operation of the PPU with PPS1350-G thruster. Fourteen PPU’s currently in flight for North South Station Keeping on seven telecom satellites have cumulated more than 24100 hours flight operation. Following the selection of the PPS1350-G as baseline thruster for the AlphaBus platform, the Alphabus PPU was developed and two flight models were delivered for AlphaSat. Launched in July 2013, they have cumulated 350 hours operation. On the SmallGEO platform, one EPTA (Electric Propulsion Thruster Assembly) branch has to drive one out of four SPT-100 thrusters. As the PPU drives one out of two thrusters, TAS-B (ETCA) has developed and qualified an External Thruster Selection Unit (ETSU) to be associated to a PPU. Two flight sets (PPU+ETSU) were delivered for SmallGEO. In order to propose a more competitive product TAS-B (ETCA) has developed the new generation of PPU, called PPU Mk2, dedicated to Hall Effect Thrusters up to 2.5kW. The qualification phase is ending with the Qualification Test Review Board successfully hold in April 2014 and the final Qualification Review planned in June 2014. Twelve PPU Mk2 flight models are already ordered by two customers. In response to the market demand to use Electrical Propulsion for Orbit Raising, TAS-B (ETCA) has started the ...