Energy-related materials are expected to reinforce energy security and solve worldwide environmental problems. We are currently focusing on the developments of advanced hydrogen storage materials for fuel cell technologies. Actually we have studied new metal-, complex- and perovskite-hydrides composed of light elements using high pressure technique and microwave process. In addition, hydrides researches connected with secondary battery and neutron shield have being also progressed, aiming at searching new functional materials. In this article, we introduce our recent studies of various hydrides for energy-related applications.