The so-called Solar Dish is a combination of a satellite-dish, the receiver technology of the Power Towers and a Stirling Engine.
It generates electricity in the 5kW to 25kW range, therefore it's used as a stand alone generator for back locations and to produce moderate quantities of power when a large number of dishes is used contiguous.
Solar Dishes use a parabolic mirror to concentrate solar energy at a focal
point in front of it. A receiver which converts the energy of the sun rays
into heat is mounted at the focal point. The gained heat (approx. 1200°F to
1470°F) is used to driving a Stirling Engine that generates electricity.