ping
I like the idea of a steam boiler at the focus of all the mirrors and a dual walking-beam steam engine driving a bank of generators. Stirling engines might be efficient but they lack the raw power of a Watt engine on an overcast day. They should add windmills to the same site since cloudiness is associated with wind, and they should add buried thermocouples to take advantage of hot days with no wind and no sun, as well as cool nights with no wind. The farm should produce some electricity no matter what.