German solar company PV Kraftworker has put robotic arms to work to mount solar panels in the field. The arm has suction cups on the end and can therefore lift and position the panels with the aid of video cameras. Because it is mounted on a track vehicle it can work on any terrain.
Kraftwerkes says that the work that was done by 35 workers can now be done with only 3 workers in an eighth of the time for about half the cost. Future plans involve using robots to make electrical connections to panels that are glued to frames rather than screwed in.
Another German based company, Gehrlicher, also uses robots for the task as the video demonstrates. The obvious advantage here is that they can work in any kind of weather.