funfact: the sun is just as bright at dawn and dusk as midday (though, lateral atmosphere blocks more UV-B). The dip in the duck's back is because the angle of

funfact: the sun is just as bright at dawn and dusk as midday (though, lateral atmosphere blocks more UV-B). The dip in the duck's back is because the angle of incidence changes. Facing solar panels towards the sun throughout the day, to maintain the angle of incidence at the same as midday (i.e. 0°) flattens and lengthens the demand curve. This sun-tracking is important, not to maximize power output, but for this effect on the demand curve, reducing storage and grid need.