Abstract: A solar power generation system for providing operating power for a desired application, the system includes one or more solar-array modules, wherein each of the one or more solar-array modules includes a multiplicity of solar cells and a high efficiency DC to DC power converter. The multiplicity of solar cells is arranged in strings of serial-units electrically connected in parallel to form a crisscross matrix array of solar cells, which matrix allows currents to bypass malfunctioning cells, thereby improving the performance of the system. The power converter includes fast MOSFET transistors having duty cycle that is operationally constant and is almost 50%. Optionally, the power converter includes a plus conductive pad and a minus conductive pad, wherein each of the strings of serial-units is individually wired to the plus conductive pad and the minus conductive pad.