In orbit you wouldn't have to worry about dust or clouds, to be sure. But keeping pointed exactly at the sun could still be a pain. As far as I know there are n

In orbit you wouldn't have to worry about dust or clouds, to be sure. But keeping pointed exactly at the sun could still be a pain. As far as I know there are no spacecraft using concentrating PV for power, though spacecraft do commonly use multi-junction cells similar to these without concentration. Space applications are very conservative due to the high cost of hardware and the small fraction of the total budget represented by the PV power system. Cutting another 30% from PV system cost is outstanding if you're building utility-scale PV projects on Earth, but down in the noise if you're building communication satellites.