A control system for a distributed power grid includes a simulation module operative to directly interface with operational control of distributed energy resources to develop and when necessary dynamically modify control inputs of the distributed power grid. The antenna has an antenna body and a resin-molded body that has a first resin-molded body and a second resin-molded body. The light that has returned into the inside area is reflected by the first surface and is reflected by the second surface toward the first surface to impinge again thereon. The first layer is heat treated at a third temperature above the first temperature to cause the incomplete crystalline structure to crystallize and to create areas of differing compositions, thus changing the first layer to an active layer.