Abstract: Devices and methods presented in this disclosure may be advantageously employed to optimize power generation and/or increase longevity of modules. In aspects of the invention, switching from backtracking mode to twin half cut module mode depending on angle of incidence and/or diffuse fraction calculations/measurements may increase power generation compared to if only one mode were used. In aspects of the invention, preventing the tracker from generating excess power may reduce temperatures of the tracker and increase longevity of its solar panels.