What isn't right? I pointed out that if you adhere to the same power density then cooling is no longer a challenge on earth (in reply to the observation that cooling a DC on earth is one of the biggest challenges).

For the record the equilibrium temperature in earth orbit is above freezing but below room temperature. Cooling won't be a problem at all unless you bring along a self contained power source. Heat distribution however might be - you will need an efficient yet lightweight construction to spread the heat generated in the chassis across the entire solar panel.