Abstract: A plurality of solar cell assembly series 9 of a solar cell panel are so arranged that any two adjacent solar cells in the plurality of solar cell assembly series 9 have a potential difference which does not exceed V volts which is a maximum output voltage of the plurality of solar cell assembly series 9. Electric discharges between any two adjacent solar cells can be prevented from occurring. Even when the output voltage of a solar cell module changes according to control by a power control circuit, electric discharges can be prevented from occurring between solar cell modules in the solar cell array in which any two adjacent solar cells in the plurality of solar cell assembly series 9 always have a potential difference which does not exceed V volts which is the maximum output voltage of the plurality of solar cell assembly series 9. In addition, the solar cell modules can be constructed of a combination of solar cell series patterns having line symmetry.