Solar power

From BEAM Robotics Wiki

Twin engine solar roller next to a more standard solar roller made from a Walkman.

Generally refers to the use of Solar Cells to convert (at least a portion of) the available light into electrical energy. This energy is then utilized to power a circuit or complete Robot.

Solar Cells do not usually produce sufficient current to power a robot, thus a Solar Engine must be employed to collect, store the converted energy, and at some point make that energy available to the robot.