The foldable solar modules Tough Fold from SUNBEAMsystem has the size of a "briefcase" and is very flat, making it extremely easy to stow away, e.g. under upholstery. The eyelets make them very easy to mount on the bimini. Solar modules are perfect for keeping the batteries in an optimal state of charge without a shore connection and for powering the refrigerator when anchored. For a normal 12 V refrigerator, at least a 100 W module should be selected.