B. Japan
Since 1974, Japan has had a well-planned program underway, called the Sunshine Project, to develop and demonstrate PV systems for internal use and components for export. Because of the very high cost of land, the primary domestic thrust is for residential and commercial building systems and for use in isolated islands. By 1991, all nine of the Japanese utilities had a number of PV units in operation. They range in size from a few watts to a few kW for the cost-effective units and from a few kW to one MW for the line-connected demonstration systems [27],[28].