Assystem

Assystem is an independent engineering group based in Paris. It provides services in design, construction, supervision, commissioning and operation of complex projects and industrial infrastructure, mostly in the nuclear industry. The corporation notably participated to all the EPR (European Pressurized Reactor) construction projects in the world (in Flamanville (France), Taishan (China), and Okiluoto (Finland)).

It had revenues of over €470M in 2020, down from €871.4M in 2013. It had over 7100 employees as of 2021, down from over 11,000 in 2013, mostly due to its decision to recenter its activities around the nuclear industry, and leave behind most of its participation in other sectors (such as the automotive industry).