Where on Earth is solar radiation most intense?

Solar radiation is most intense near the equator, particularly in regions with clear skies and high altitudes. Areas such as the Sahara Desert, parts of the Amazon, and high-altitude locations in the Andes and Himalayas receive the highest solar insolation due to their proximity to the equator and minimal atmospheric interference. The intensity of solar radiation decreases as one moves toward the poles, where the angle of sunlight is less direct.