The invention relates to a solar conversion system, comprising solar focusing means for focusing solar energy incident thereon into a solar beam, said solar beam at its smallest cross section having a cross section less than about ten percent of the cross section of the solar focusing means, container means to retain a fluid to be heated by solar energy, said container means having an opening approximately the size of the smallest cross section of the solar beam, positioning means operable for positioning said focusing means so that the smallest cross section of said solar beam is located at the opening so that substantially all of the solar beam enters into said container, dispersing means positioned in said container in the path of said solar beam operable to disperse the solar beam in said container, thereby reducing the amount of reflected solar beam exiting the opening.