A triboelectric generator (100; 900; 1200) for generating electrical power using the triboelectric effect, the triboelectric generator comprising: a first body (110; 910; 1210); a second body (120; 920; 1220) moveable relative to the first body; a plurality of power generation modules (111; 911; 1211) disposed on the first body, the plurality of power generation modules each being electrically connected to a common output and comprising material capable of generating electrical power through the triboelectric effect when brought into contact with another surface; and one or more actuating elements (121; 921; 1221) disposed on the second body, wherein the plurality of power generation modules and the one or more actuating elements are arranged on the first and second bodies such that relative movement of the first and second bodies can cause the one or more actuating elements to come into contact with the plurality of power generation modules, wherein the contact between one of the one or more actuating elements and one of the power generation modules causes the material of said one of the power generation modules to be brought into contact with said other surface so that electrical power is generated, and wherein the triboelectric generator is configured such that the plurality of power generation modules supply electrical power to the common output at different times during the relative movement of the first and second bodies, characterized in that each power generation module comprises: a power generation component comprising the material capable of generating electrical power through the triboelectric effect; and a first contact surface comprising said other surface arranged to be brought into contact with the material, wherein the first contact surface is spaced apart from the power generation component by a distance such that when the power generation component is deflected in a direction towards or away from the first contact surface and subsequently released, the power generation component oscillates and repeatedly makes contact with the first contact surface, thereby generating electrical power. a first body (110; 910; 1210); a second body (120; 920; 1220) moveable relative to the first body; a plurality of power generation modules (111; 911; 1211) disposed on the first body, the plurality of power generation modules each being electrically connected to a common output and comprising material capable of generating electrical power through the triboelectric effect when brought into contact with another surface; and one or more actuating elements (121; 921; 1221) disposed on the second body, wherein the plurality of power generation modules and the one or more actuating elements are arranged on the first and second bodies such that relative movement of the first and second bodies can cause the one or more actuating elements to come into contact with the plurality of power generation modules, wherein the contact between one of the one or more actuating elements and one of the power generation modules causes the material of said one of the power generation modules to be brought into contact with said other surface so that electrical power is generated, and wherein the triboelectric generator is configured such that the plurality of power generation modules supply electrical power to the common output at different times during the relative movement of the first and second bodies, characterized in that each power generation module comprises: a power generation component comprising the material capable of generating electrical power through the triboelectric effect; and a first contact surface comprising said other surface arranged to be brought into contact with the material, wherein the first contact surface is spaced apart from the power generation component by a distance such that when the power generation component is deflected in a direction towards or away from the first contact surface and subsequently released, the power generation component oscillates and repeatedly makes contact with the first contact surface, thereby generating electrical power. a power generation component comprising the material capable of generating electrical power through the triboelectric effect; and a first contact surface comprising said other surface arranged to be brought into contact with the material, wherein the first contact surface is spaced apart from the power generation component by a distance such that when the power generation component is deflected in a direction towards or away from the first contact surface and subsequently released, the power generation component oscillates and repeatedly makes contact with the first contact surface, thereby generating electrical power.