That's still such an inconsequential effect compared to the additional heat trapping caused by atmospheric ghg increases from fossil fuel burning that it doesn't really tip the scales. Solar does solve the biggest problem: ghg emissions. In order of importance: #1: stopping emission of greenhouse gasses on a huge, planet destroying scale, ~#15 reducing current ghg concentrations back to baseline, ~#900 worrying about reflectivity or absorption levels of solar energy installations.