The Stirling Solar Powered Engine is similar to the Low temperature Differential Stirling Engine in that it can run on very low temperatures, however, the Solar Powered versions usually have a transparent top plate and a matt black displacer, this allows the solar energy to get inside the engine and do its magic. They can also have a matte black top plate, this too allows solar energy to efficiently transfer its heat to the engine.
These little beauties will sit on a windowsill in sunlight and happily work away. They can also be powered by an overhead lamp sitting on your PC desktop or any table for that matter, as well as having all the other properties as the low temperature models. Here are the Solar Powered Engines available to buy -