NOVELTY - A solar energy composting assembly (20) comprises a cylindrical drum (22) having a first receiving end for receiving material to be composted, a second discharge end for delivering the composted material, a first longitudinal axis, and a material advancing mechanism; a support for holding the drum in a fixed axial position as well as a fixed transverse position; a drive mechanism; and a partially arcuate solar reflector (50) having a polished upper surface for capturing solar radiation and reflecting the solar radiation onto an outer surface of the drum.    USE - A solar energy composting assembly.    ADVANTAGE - The solar energy composting assembly can convert multiple types of organic waste into useful fertilizers in a shortened period of time (in weeks rather than months).    DETAILED DESCRIPTION - A solar energy composting assembly comprises:    (A) a cylindrical drum having a first receiving end for receiving material to be composted, a second discharge end for delivering the composted material, a first longitudinal axis, and a material advancing mechanism for advancing the material to be composted through the drum;    (B) a support for holding the drum in a fixed axial position as well as a fixed transverse position, while permitting rotation about the first longitudinal axis;    (C) a drive mechanism to rotate the drum about the first longitudinal axis; and    (D) a partially arcuate solar reflector lying beneath a portion of the drum, and having a polished upper surface for capturing solar radiation and reflecting the solar radiation onto an outer surface of the drum.    When the drive mechanism rotates the drum about the first longitudinal axis, the material advancing mechanism moves the material to be composted from the first receiving end to the second discharge end. The drum is made of stainless steel having an outer surface covered with a black coating to increase an amount of solar radiation retained by the cylindrical drum which is reflected by the solar reflector.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a solar composting assembly.    Inlet (11)    Solar energy composting assembly (20)    Cylindrical drum (22)    Drive rollers (30)    Solar reflector (50)