An apparatus for generating composite ice includes a water inlet system that receives water; a water treatment that operates on water delivered from the water inlet system, to provide treated water; a cooling system that operates on the treated water to generate ice; and an ice delivery system that outputs the generated ice. The water treatment system introduces a material that includes hollow particles to the water delivered from the water inlet system, the material being selected such that the generated ice, including light scattering centers created by the presence of the material, has an albedo greater than 0.15.