The solid-state imaging device of the present disclosure includes a signal processing unit including an AD converter that digitizes an analog pixel signal read from each pixel of the pixel array unit to a signal line, the signal processing unit transferring digitized pixel data at a first speed higher than a frame rate; a memory unit that stores the pixel data transferred from the signal processing unit; a data processing unit that reads pixel data at a second speed lower than the first speed from the memory unit; and a control unit that, when the pixel data is read from the memory unit, controls to stop operation of a current source connected with the signal line and operation of at least the AD converter of the signal processing unit.