Two German companies, Gehrlicher and PV Kraftwerker, have developed robot systems for installing ground mounted solar panels.

PV Kraftwerker claims that its system, which costs about $900,000, is eight times faster and requires one tenth of the number of workers as a manual system.

Gehrlicher says that its system, seen in the video clip, can  "automatically install ground-mounted solar panels day and night, in all sorts of weather."