Prepared my oven for cooking by the oven instructions. Tried a pretzel brownie mix as my first test. It was sunny when I started the process, but 10 min into cooking time, cloud cover came over and temperature dropped to 200 degrees F. I just left it alone and when the cloud cover moved, the oven quickly went to 320 degrees F. Took a bit longer to cook the brownies, but who cares, the power is free! The brownies were perfectly done and delicious. Bread baking is next. I put my oven on a glass table on our deck, aimed it south and just had to adjust it one time by turning slightly for maximum sun exposure. Absolutely love this oven. I can see already that it will be my primary oven for the hot summer months in the south since I don’t want the house to heat up on the inside. I believe it is best to buy this complete set because the pot and pan sizes are perfect.