NOVELTY - A solar light absorbing material comprises liquid medium and particles dispersed in liquid medium. The liquid medium has specific heat of 0.4-1.4 cal/g/ degrees C and melting point of 5 degrees C or less. The particles have chromaticity value of 30 or less which is measured using CIE-Lab color system with light source D65.    USE - Solar light absorbing material is used for solar absorption and light control material e.g. window glass, tile and roof material for agriculture and horticultural plant and residence and building, heat absorption and thermal storage material for storage structure for solar water heater, air conditioning medium and electric power generation system (all claimed).    ADVANTAGE - The solar light absorbing material has simple structure, excellent solar light-absorbing property and reduced environmental impact. The solar absorption and light control material comprising the solar light absorbing material is economical and has improved solar heat absorption efficiency.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) heat absorption/thermal storage structure, which has container with opening portion covered by light transmissive component and filled with heat absorption and thermal storage material;    (2) solar water heater, which has heat absorption/thermal storage structure and water;    (3) air conditioning system. The heat thermally stored by heat absorption/thermal storage structure is made as heat source of the absorption-type refrigerator or adsorption-type refrigerator;    (4) electric power generation system. The heat thermally stored by heat absorption/thermal storage structure is made as heat source of thermal energy conversion;    (5) solar absorption and light control material, which has plate-shaped material with hollow portion in which solar absorber is filled. At least upper surface or lower surface of plate-shaped material has translucency;    (6) agriculture and horticultural plant, which has absorption and light control material which is used for wall and/or ceiling; and    (7) residence and building, which has absorption and light control material which is used for wall, window, roof or rooftop.