Based on previous research on generating electricity through the irreversible phenomena of light caused by paired rotating gratings, we propose an alternative method due to the excessively high rotational speeds required by the gratings. This new approach involves using paired shutters to create irreversible light phenomena, achieving the same goal of converting disordered thermal energy into ordered electrical energy, and making the method feasible with current technological capabilities. The method employs two black bodies equipped with shutters. In the light path of one side, the shutter opening and closing timings differ by the time it takes for light to travel between the two shutters, allowing light to pass through in one direction. Conversely, in the opposite light path, the shutter timings are such that when the shutter at the source end is open, the light reaching the other end finds the shutter closed, preventing the light from passing through. This creates an irreversible path for the light. In our paper, we explored various structural designs and theoretically demonstrated that this approach is achievable with existing technology. Moreover, since the direction of light travel is perpendicular to the physical movement of the shutters, the system can operate without kinetic energy loss due to light pressure, allowing for frictionless and sustainable operation. Thus, this method has the potential to become an environmentally friendly energy source.