NOVELTY - Low concentrating solar collector comprises: at least one elongated beam element; a pair of beam side walls (52, 54) carried by and diverging from the web at bottom edge portions of the beam side walls; a large open mouth defined between top edge portions of the beam side walls opposite to the web; and at least one of a photovoltaic cell member and a thermal collector member carried by the beam web.    USE - The low concentrating solar collector is useful to generate hot water or heat exchanger fluid: in building; in greenhouse; on a swimming pool; on solar fields; or in self standing support applications.    ADVANTAGE - In the solar collectors the combination of glazed flat plate inside the 3x concentrator, enables to warm fluid (e.g. water) even during subfreezing winter temperatures of subpolar countries, which include Canada. Thus hot water can be generated in cold climates even during winter time with a very low cost since the present glazed flat plates are three times smaller and cost three times less than standard glazed flat plates. The solar collectors with clear skies during the day can generate 75 degrees C hot water with a 50% efficiency even when ambient temperature is -10 degrees C.    DETAILED DESCRIPTION - Low concentrating solar collector comprises: at least one elongated beam element; a pair of beam side walls (52, 54) carried by and diverging from the web at bottom edge portions of the beam side walls; a large open mouth defined between top edge portions of the beam side walls opposite to the web, where each beam element has a translucent web and the beam side walls each define a main inner face in register with one another, in which each of the beam side walls further forms integral sunray light reflecting surfaces; and at least one of a photovoltaic cell member and a thermal collector member carried by the beam web. The selected photovoltaic cell member and thermal collector member have exposed surfaces accessible to at least infrared component of sunrays crossing the beam mouth and striking and deflected by the beam side walls light reflecting surfaces towards the web. The beam side walls are of such size and composition as to further be able to constitute a heat sink for optimizing thermal management of the solar collector.    DESCRIPTION OF DRAWING(S) - The figure illustrates partly broken perspective views of a part of V-beam and associated photovoltaic and thermal modules from the solar collector.    Beam side wall (52, 54)    Mirror (66)    U-shape casing (72)    Photovoltaic cell unit (80)    Thermally insulating main block (100)