A segment plate for a stator lamination assembly of a generator of a wind turbine, and a base plate in the form of a ring segment, wherein the segment plate has a first radial portion in which recesses are provided for receiving a stator winding and radially adjacent to the first radial portion a second radial portion forming a segment of a magnetic yoke of the generator. In particular adjacent to the second radial portion the segment plate has a third radial portion forming a segment of a stator carrier structure of the generator and which in particular is adapted in conjunction with the third radial portions of further segment plates to form the stator carrier structure of the generator. A stator lamination assembly, a generator and a wind turbine, each having such segment plates.