Call me a doubting Thomas... but as someone who has played with solar for a while, there is NO way that a collector that size could gather enough energy to cook real time, let alone save it for later. The surface area for cooking is about the same as the collection area... so reason would dictate that the energy available for cooking would be no more than just leaving the food out in the direct sunlight. Pipe dreams are fun, but this makes about as much sense as putting a wind generator on top of your car to power the wheels. I have a solar oven, and it works well, but takes all day to cook a couple pans of food. A grill is a completely different animal.