Presents an analysis of an inexpensive solar collector/storage system consisting of a tank or network of pipes buried in the ground; the ground above the pipes/tank may be replaced by concrete, sand or bricks for different applications. The heat can be extracted by flow of a fluid in the manner which keeps the collection temperature constant. The effectiveness of the collection/storage system can be increased by blackening and glazing of the surface of the ground. The authors have derived an expression for the transient rate at which heat can be retrieved to keep the collection temperature constant. Numerical calculations for typical days in Kuwait are reported.