Abstract: The arrangement mode of the basic units of the photovoltaic array (photovoltaic modules) was analyzed. The relationship of the geographic latitude with the interval between rows of the array, the optimum tilted angle of the array and the shadow coefficient was found by calculation. A conclusion was obtained that in selection of the modules arrangement mode of a photovoltaic array, must give certain priority to the scheme of vertical arrangement.

Key words: photovoltaic power generation, photovoltaic module, arrangement mode, geographic latitude, interval between rows, optimum tilted angle, shadow coefficient