Framatome

Framatome is the nuclear steam supply system vendor for 92 reactor units on record, 66 of them operating, totalling 76.8 GW of gross capacity across 4 countries.

Built France's fleet under a Westinghouse licence from 1958, then developed its own CP, P4 and N4 series, and co-designed the EPR with Siemens. Majority owned by EDF (75.5%) with Mitsubishi Heavy Industries and Assystem holding the remainder. Also a major fuel fabricator, supplying both its own and competitors' reactor designs.