An electrostatic induction power generator comprising: a first substrate and a second substrate configured to be able to move relative to each other, while maintaining a state in which the first substrate and the second substrate face each other; an electret provided on a surface of the first substrate; a first electrode and a second electrode provided on a surface of the second substrate facing the electret; and a housing containing the first substrate and the second substrate, wherein said electrostatic induction power generator is adapted to output electric power when a positional relationship between the electret and the first electrode changes and a positional relationship between the electret and the second electrode changes following a change of relative positions of the first substrate and the second substrate and thereby an electrostatic capacitance between the electret and the first electrode changes and an electrostatic capacitance between the electret and the second electrode changes, wherein a regulating member (151; 152) for making a distance between said surfaces of the first substrate and the second substrate facing each other constant is provided, wherein the housing is provided with a first reference surface to which a facing surface of one substrate, which is one of the first substrate and the second substrate, facing the other substrate is fixed, and which is a positioning reference for positioning the facing surface of the one substrate in a facing direction being perpendicular to the facing surface, and a second reference surface with which the regulating member (151; 152) is slidably in contact, and which is a positioning reference for positioning the regulating member (151; 152) in the facing direction, and wherein the regulating member (151; 152) is slidably in contact with a facing surface of the other substrate facing the one substrate. a first substrate and a second substrate configured to be able to move relative to each other, while maintaining a state in which the first substrate and the second substrate face each other; an electret provided on a surface of the first substrate; a first electrode and a second electrode provided on a surface of the second substrate facing the electret; and a housing containing the first substrate and the second substrate, wherein said electrostatic induction power generator is adapted to output electric power when a positional relationship between the electret and the first electrode changes and a positional relationship between the electret and the second electrode changes following a change of relative positions of the first substrate and the second substrate and thereby an electrostatic capacitance between the electret and the first electrode changes and an electrostatic capacitance between the electret and the second electrode changes, wherein a regulating member (151; 152) for making a distance between said surfaces of the first substrate and the second substrate facing each other constant is provided, wherein the housing is provided with a first reference surface to which a facing surface of one substrate, which is one of the first substrate and the second substrate, facing the other substrate is fixed, and which is a positioning reference for positioning the facing surface of the one substrate in a facing direction being perpendicular to the facing surface, and a second reference surface with which the regulating member (151; 152) is slidably in contact, and which is a positioning reference for positioning the regulating member (151; 152) in the facing direction, and wherein the regulating member (151; 152) is slidably in contact with a facing surface of the other substrate facing the one substrate.