An electronic timepiece with a solar cell comprises a timepiece movement, a timepiece case for housing the movement, a casing ring for housing and holding the movement in the case, a solar cell, and adial, wherein the solar cell is disposed almost vertically to a solar cell positioning part provided in the casing ring, and the solar cell has a slender strip shape formed on a flexible substrate. Consequently, a solar cell need not be disposed in a timepiece movement, and it is only necessary to change a casing ring as an external component even when a panel cover diameter is changed, allowinga common use of a timepiece movement. A solar cell can be coiled to match the size of a casing ring when it is incorporated in the casing ring, therefore a common solar cell can be used despite a change in the panel cover diameter of the timepiece.