Abstract: Methods and apparatus are described for a concentrated photovoltaic system. A method of creating a paddle structure with a set of solar receivers that are aligned within and mechanically secured in place in each module contained in a paddle structure. Each solar receiver is assembled and aligned, where the assembly of the solar receiver establishes the alignment of the secondary optic to the photovoltaic solar cell. The assembly of a module with its set of solar receivers establishes the alignment in three dimensions the solar receivers with each other. Individual parts making up the receiver are 1) shaped, 2) sized, 3) keyed, 4) pinned and 5) any combination of these to fit together in only one way so that all of the solar receivers containing the photovoltaic solar cell maintain their alignment when installed in a given CPV module.