how much starlight is received on earth
In the typical moonless night sky, the amount of starlight perceived by the human eye is .00005 lux.
Going into what exactly constitutes a lux is would be needlessly complicated for this forum, so let's use a comparison instead. A full moon on a clear night emits .25 lux. The amount of sunlight from the noonday sun on a clear day is 100000 lux.
less than a 2000 watts per day