A stator core of a rotating electrical machine includes an annular first core plate including a plurality of first core plate pieces and an annular second core plate including a plurality of second core plate pieces. A predetermined number of the first and second core plates are alternately laminated such that stator fixing portions overlap with each other and such that positions of joints between the first core plate pieces of the first core plates differ from positions of joints between the second core plate pieces of the second core plates in the circumferential direction.