The units were W/km^2
It doesn't really matter though as a comparison in magnitude of power production. The energy received from the Sun and can be determined from the radiation received on the ground, radiation absorbed by the atmosphere and radiation reflected from the Earth.
Nonetheless, it's poor form to dismiss RE scientific explanation without providing an alternative. You may as well just say, "I don't believe it because I don't want to." You aren't disproving facts or statements, you just aren't accepting them.
Tom - can you show your calculations for determining the Sun to be where it is? You mention you have done them. Please post them.