At UC Davis, they've been playing with solar refrigeration for years. You could build a similar off-grid refrigeration unit to make ice to keep your food cold, or rigged to cool the air in your abode.
Page 27 of this PDF states: "The SAAR is a small scale, sustainable solar refrigerator system that can operate in tempered regions of the world and be duplicated using common materials found in developing communities."
Powerful. Sustainable. Clean.
Find it here:
http://www.solaripedia.com/files/1113.pdf
