NOVELTY - A solar power generating system comprises a two-dimensional reflector (10) comprising a holder (12) and sheet-like first solar battery (11), and having a focal line and mirror axis plane; sun-tracking unit for detecting direction of sun and controlling two-dimensional reflector to point the mirror axis plane toward the sun; thermally conductive tube (20) extending along focal line of two-dimensional reflector; second solar battery (21) held on an outer surface of tube with its photo-sensitive surface facing outward; and cooling and heat-supplying unit for circulating fluid through the tube.    USE - A solar power generating system for producing different types of energy derived from solar energy, such as electric power, heat and kinetic energy of gas.    ADVANTAGE - The solar power generating system is capable of improving energy conversion efficiency by reducing reflection loss of incident sunlight at surface of solar battery; can be incorporated in limited space available in densely populated urban areas through such improvements in energy conversion efficiency; and is hybrid style combining a condensation-type generator and non-condensation-type generator to achieve high photovoltaic conversion efficiency with low manufacturing costs.    DETAILED DESCRIPTION - A solar power generating system comprises:    (1) two-dimensional reflector (10) comprising a holder (12) and sheet-like first solar battery (11) held on holder to form a partially absorptive and partially reflective surface of reflector, and having a focal line and mirror axis plane extending along the direction of its length;    (2) sun-tracking unit for detecting direction of sun and controlling two-dimensional reflector to point the mirror axis plane toward the sun;    (3) thermally conductive tube (20) extending along focal line of two-dimensional reflector;    (4) second solar battery (21) held on an outer surface of tube with its photo-sensitive surface facing outward; and    (5) cooling and heat-supplying unit for circulating fluid through the tube and for supplying obtained heat externally.    The second solar battery is formed of gallium arsenide or silicon carbide.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of solar power generating system employing a solar battery.    Two-dimensional reflector (10)    Sheet-like first solar battery (11)    Holder (12)    Thermally conductive tube (20)    Second solar battery (21)