Hello, I have an idea to generate electricity using piezoelectric material. I entered this in a contest and my idea got selected. Now I have to prepare a detailed presentation of the idea for which I need to figure out approximately/roughly how much electricity will be produced. I am a layman who does not have much formal education. Can someone please guide me as to how do I got about calculating the amount of electricity produced if I know the extent of surface area which will be stressed. Is there any formula that I can use. Any pointers will be very helpful. Thanks in advance.