Solar cells, also called photovoltaic cells, convert sunlight into electricity. Though solar panels generate electricity throughout the day, power generation is maximum only when sun shines directly on them. The power generation capacity of solar panels is dependent on the angle of rays that hit the modules.
Peak power occurs when the sun rays are at right angles or perpendicular to the modules. When the rays deviate from perpendicular, solar energy gets reflected. The highest solar generation during day time is usually from 11 am to 4 pm.
One of the main criteria while installing solar panels is whether they will receive ample peak sun hours. It is very important because electricity generation is directly proportional to the solar irradiance that hits the panel.