The Sun emits an enormous amount of energy in the form of visible light. Its total power output is estimated to be around 3.8 x 10^26 watts. However, it's important to note that the concept of "consuming" light is not applicable in the same way as consuming other resources.
Visible light is a form of electromagnetic radiation, and while humans can harness and utilize certain portions of the electromagnetic spectrum, such as through solar panels for electricity generation, directly consuming or "using up" all the light emitted by the Sun is not feasible or meaningful.
Even if humans were to capture and convert a significant fraction of the Sun's energy for practical purposes, such as generating electricity, it would only be a fraction of the total energy emitted by the Sun. The scale of the Sun's energy output is so immense that it surpasses the current and foreseeable future capabilities of human technology.
Furthermore, the Sun's energy is not solely in the form of visible light. It also emits other forms of electromagnetic radiation, such as infrared, ultraviolet, and other wavelengths. So, even if we were to focus on visible light, the Sun's energy output extends beyond that range.
In summary, while humans can harness and utilize some of the Sun's energy, it is not possible to consume or utilize all of the Sun's output of visible light, given the immense scale of the Sun's energy production and the limitations of current technology.