Bargyla, I don't know the answer to that one! Maybe a solar oven? Maybe flat bread? (Chapatti?) You're right though. A bread machine usually is (electric) switched on for 2 - 3 hours, the kneading time, the rising time, and the baking time. It would probably be as costly as a traditional oven used for an hour. At least it doesn't heat up the house while it's working, though. Actually, I have a friend who is so impressed with her solar oven, (sun something or other brand), she's going into business selling them. I was wondering if anyone uses one, and actually to what benefit they'd be. It seems like it takes 'days and days' to cook a meal in one, even in our Tx summer heat.