Solar residential heating and cooling, solar stills producing potable water, greenhouse and solar dehydration as agricultural applications are reviewed with an emphasis on similar R & D activities in Korea. These phases of solar energy utilization at low temperature are considered the most attractive as practical means. Solar space heating and solar stills are already in operation in many localities competing with conventional methods. As for greenhouse and solar dehytdration research efforts are concentrated on effective energy management by reducing heat loss and cost-effective system development, respectively. Technical details of solar space cooling are still under tests. Solar energy utilization at high temperature will be reviewed in part III of this series.