Energy and Information and Communication Technology (ICT), as two driving forces of the contemporary life, are reshaping themselves based on ubiquitous society architecture to improve their service quality. Within the reforming process, integration of two systems can contribute to a greener ubiquitous society by equipping them with the concept of energy conservativeness, and leveraging renewable energy sources. In this paper we outline the idea of Cloud of Energy (CoE) which fosters the adoption of green energy and green cloud by integrating these two systems. CoE introduces an integrated framework of everything as a service to facilitate the service exchange, not only across the computing and electricity grid hierarchy, but also among them via an economic middleware.