This is an old revision of the document!
Words of wisdom: “….the solar oven is a very good mimic of a crock pot slow cooker” - Bob Wells1)
Solar ovens
Solar ovens are devices that concentrate and retain heat from the sun to cook foods.  They can also used to reheat or to disinfect water.  
The ovens may have integral cooking containers2) but more commonly a black pot is placed into the oven.  
Advantages:
Disadvantages:
 requires good sun
 
 wind can blow the cooker around
 
 wind will wick off heat from open designs
 
 can be bulky - look for foldable/collapsible designs
 
 
styles
Major design styles include:
 box - a box with reflectors
 
 bag - like a box, only made from flexible matrial like neoprene with mylar lining
 
 funnel - a rough parabolic shape
 
 thermal tube - horizontal clear tubes into which food is placed
 
 
requirements
The acronym CARD describes what is necessary for solar cooking:4)
 Collection (reflectors)
 
 Attraction (black pots or painted oven bottom)
 
 Retention (“greenhouse” enclosure or insulated box walls with cover)
 
 Duration  - time in the oven
 
One might add S for Sunshine.  
 
commercial ovens
 Global Sun Oven (aka Burns Sun Oven), used by Bob Wells of Cheap RV Living and Nomadland fame, jimindenver
5) 
 
 Go Sun (thermal tube), used by zenerbufen
6), biobennett
7), AbsintheFairyGirl
8) 
 
- 
 
- 
 
 SOS Sport, used by used by PrairieFire_withwind
11) 
 
- 
 
 
DIY ovens
further reading