Solid-state imaging device, driving method for solid-state imaging device, and electronic device

The disclosure relates to a solid-state imaging device, a driving method for solid-state imaging device, and an electronic device with a simpler circuit and a smaller area, which are capable of achieving lower-power consumption and high-speed charging. A voltage supply unit 320 comprising: an external capacitor Cext31 with a first electrode EL31 connecting to a first node ND31 and a second electrode EL32 connecting to a second node ND32, a first switch SW31 connecting between a first power potential Vaa and the first node ND31, a second switch SW32 connecting between a second power potential Vgnd and the second node ND32, and a third switch SW33 connecting between the first power potential Vaa and the second node ND32; wherein the first node ND31 connects to a first power voltage terminal TVAA of a row driver 310.