some slightly cracked solar panels that got hit and damaged by vehicles on the road. when this happens, they have to declared them unsafe even though they still work and end up throwing them out / replacing them.
all you have to do to get solar panels for free is look for those blinking highway signs and get the telephone number off the sign itself. then call and ask the shop maintenance manager if they have any free damaged solar panels. sometimes it helps to get your kids to call and say they are for a school project. also, going to their location in person can bring better results as they 