using ice as the supporting media when the reservoir was frozen alternately freezing could be prevented by adding waste heat to the pool or using an antifreeze type chemical additive the array 21 of reflectors shown in fig1 each comprise a focussing flat plate collector panel 30 hingedly mounted with hinges 39 on platform 22 and focused by a moving mechanism 31 for collecting solar energy and together with the platform moving mechanism 25 provides the dual function of collecting the sun 39 s energy one of the basic problems inherent in maximizing the efficiency of any solar collector is that of tracking the sun this is particularly true of focusing collectors flat plate collectors are placed in a fixed position either horizontally or inclined toward the equator even though the efficiency of the flat plate collector could be increased significantly heretofore the costs of providing such a tracking mechanism using known land supported mechanism has been prohibitive this problem of tracking the sun is greatly reduced when the collectors are mounted on a floating platform as disclosed herein only a small amount of force is needed whether the raft or platform is floated in a confined pool or on open water fig1 and 2 illustrate a flat multiple mirror azimuth altitude tracking solar panel 30 a plurality of which are parallelly arranged on the floating platform 22 each panel is formed to provide fixed sloping surfaces or.