Run compressor using solar thermal.

[Cpbapu]

I think concentrating solar and running compressor using that heat directly will save lot of energy for refrigerator and air conditioning. What you have to say?

[passandscore]

Good luck with that! If it was cost effective, it would be a mainstream alternative already.

[NiHaoMike]

It would have to be an absorption system, not a compressor. You could run an automotive compressor from a steam engine, but you'll be better off with PV for small systems.