Maybe if the solar panel is orbiting the earth and staying in the sun rays longer then it would mean that it would be harnessing more power rather than being on the surface where it would have to break at night time. So solar based solar power should be able bring in more power from the sun.
I think that if space-based solar power can be harnessed then it is a very good idea to use this to power various things on earth. We are currently using fossil fuels and resources that we will never get back. It will only be a matter of time until these resources run out and we have no more fuel to heat our homes, power our cars, etc.