France's Paris Transit Authority (RATP) has signed a contract with Alstom for the supply of 25 Citadis tramsets by 2012.
The tramsets are expected to operate on the city's T3 tramline.
The trams feature platform-height floors, a video-surveillance system, a passenger counting system and on-board visual information.
Each tramset will be able to accommodate over 300 passengers, including 78 seated passengers.
The €77m ($97.9m) contract comes after an initial contract signed in December 2003 with the RATP and could go up to €85m ($108m) with extra orders for spare parts and specific tools.
The authority's Citadis fleet comprises 106 tramsets, 60 of which operate on the T2 tram line and 46 on the T3 line.