Assuming that CY3 landed somewhere it gets eternal sunlight, I can see how this can be an issue. Many landers and rovers have horizontal solar panels - they would work as long as the sun is reasonably above the horizon. However, the sun is always going to be near the horizon at the poles. That would not only require the solar panel to be mounted vertically, but also be oriented towards the sun somehow.
Some places there get eternal sunlight instead: https://en.wikipedia.org/wiki/Peak_of_eternal_light