A solar concentrator system is described which is based on the use of a long array of east-west mounted focusing reflectors. Each of the reflective segments projects a line image of the sun into the entrance aperture of a stationary receiver through which a working fluid flows. Typically, ten segments in parallel are initially aligned to focus on the same receiver aperture; the mean solar flux across the aperture can be on the order of forty times that falling on the mirrors. The mirrors are steered by linked rotation about their individual centers to track the sun in elevation. Simple logic is also incorporated to rotate the mirrors into a face-down position on lack of sun or lack of demand. This provides for protection during storms and at night, and for defocusing in case the system overheats. The system is simple, well suited to installation and maintenance operations, and offers the potential for high efficiency in the intermediate temperature range at a low life-cycle cost.