Energy technology is the essence of smart energy—the direct embodiment of intelligence. All kinds of technologies carrying intelligence are cells full of vitality of smart energy, forming the energetic living body of smart energy. The technologies of smart energy can be divided into two kinds: innovative technologies and alternative technologies. Innovative technologies mainly refer to clean technology, high-efficiency technology, and safe technology that target the development and use of traditional energy forms. Alternative technologies mainly refer to exploring, discovering, developing, and using technologies that target new energy forms.