The huge disadvantage that is never mentioned is heat disposal under those conditions. If you keep your panel illuminated constantly, then how, in a vacuum, are

The huge disadvantage that is never mentioned is heat disposal under those conditions. If you keep your panel illuminated constantly, then how, in a vacuum, are you going to send the heat overboard? The heat has to be radiated away, just as solar assemblies on current geosynchronous satellites radiate it away. "The Solar Array Photovoltaic Assembly For The INSAT 4CR Spacecraft: Design, Development And In-Orbit Performance" https://www.researchgate.net/profile/Sankaran-Muthusamy/publication/291742587_The_solar_array_photovoltaic_assembly_for_the_INSAT_4CR_spacecraft_design_development_and_in-orbit_performance/links/58ba79be92851c471d4ef7d5/The-solar-array-photovoltaic-assembly-for-the-INSAT-4CR-spacecraft-design-development-and-in-orbit-performance.pdf https://www.researchgate.net/profile/Sankaran-Muthusamy/publ... Table 1 shows equilibrium solar cell operating temperatures in geosynchronous orbit. They're in the range of 49 to 54 degrees Celsius.