Interstellar Travel

I have a theory about our energy problem: we paint the earth black. It will absorb all sun light in visible and some infrared and ultraviolet spectrum. We then get the most out of the sun, period. But then we cook to death. A solar panel is essentially black. If you cover the planet with these panels, we probably get a lot of energy, but this energy will turn into heat as we waste them away in activities such as motorizing everything and driving our electric cars. Essentially accepting more from the sun is not a solution, cutting consumption is.