A photovoltaic power generation module that can make use of arcuate cells
and a photovoltaic power generation system employing such a module are
disclosed. The photovoltaic power generation module may include arcuate
cells divided from a disk-shaped single crystal silicon photovoltaic
power generation cell. The arcuate cells may have a circular arc with a
central angle of 90.degree.. The arcuate cells may have a
grid-perpendicular to the chord and at least one busbar perpendicular to
the grid. The arcuate cells may be arrayed in a lattice pattern, the
arcuate cells having an area of 28 to 65 cm.sup.2 and 14 to 42 thereof
being arrayed.